JP7710164B2 - Wooden pillar installation structure and wooden pillar installation method - Google Patents

Description

The present invention relates to a wooden pillar installation structure and method that can be applied to wooden pillars used for torii gates, main pillars of houses, free-standing pillar structures, lanterns, etc.

The applicant of this application has previously applied for and obtained a patent for an invention related to a wooden pole installation structure (see Patent Document 1 below).

The invention described in Patent Document 1 (hereinafter referred to as the patent invention) comprises a support device and a wooden pole that is supported in an upright position by the support device.

The support device has a base plate that is fixed to the foundation concrete, a support tube that is fixed to the base plate, and a protrusion provided within the area of the upper surface of the base plate that is surrounded by the support tube.

The wooden post has a recessed portion on its base end surface corresponding to the protruding portion, and the outer periphery of the base end portion is covered with a protective cover.
The protective cover has a tubular portion surrounding the base end of the wooden pole, and a wooden pole side flange portion extending radially outward from a portion of the tubular portion that is located within the support tube when the wooden pole is in an upright position.

The support tube has a cylindrical support tube body and a support tube side flange portion extending radially inward from the support tube body, and at least the area of the gap between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the support tube body that is sandwiched between the support tube side flange portion and the wooden post side flange portion in the vertical direction is filled with an adhesive.

The above-mentioned patented invention is useful in that it can install wooden poles while effectively ensuring the installation strength on the concrete foundation, even when a single wooden pole is installed or when only a few wooden poles are installed, and furthermore, it can make it possible to replace installed wooden poles without destroying the concrete foundation.

However, the above patented invention had the problem that it required the wooden pole to have an engagement groove that opened radially outward, making it inapplicable to thin wooden poles.

That is, in the above patented invention, the base end of the wooden pole surrounded by the cylindrical portion is provided with an engagement groove that opens radially outward. A rigid member is attached to the engagement groove so that it cannot move relative to the wooden pole in the longitudinal direction.

On the other hand, the tubular part has an attachment hole at a position opposite the rigid member, and the tubular part and the vertical wooden pole are connected via a fastening member that is inserted into the attachment hole and fastened to the rigid member.

Therefore, the wooden pole to be erected must have a diameter large enough to ensure its strength even when the engagement groove is formed.

Patent No. 6585316

The present invention was made in consideration of such conventional technology, and aims to provide a wooden pole installation structure and method that allows a wooden pole to be installed on a concrete foundation while ensuring installation strength, without forming an engagement groove that opens radially outward in the wooden pole, even when a single wooden pole or a small number of wooden poles are installed, and further allows the installed wooden pole to be replaced without destroying the concrete foundation.

In order to achieve the above object, the present invention provides a formwork member having a cylindrical side panel and a rigid bottom panel connected to the cylindrical side panel so as to close the lower end opening of the cylindrical side panel; a support member supporting the formwork member on a reference plane so that the upper end opening of the cylindrical side panel faces upward; foundation concrete poured on the reference plane so as to cover the outer periphery of the cylindrical side panel; a wooden pole having at least a lower region located within the formwork member with a diameter smaller than that of an installation hole defined by the cylindrical side panel; rigid protrusions and recesses provided directly or indirectly on one and the other of a placement surface region of the bottom panel surrounded by the cylindrical side panel and a base end surface of the wooden pole, the rigid protrusions and recesses being positioned so that a gap exists over the entire circumference of the wooden pole between the outer periphery of the lower region of the wooden pole and the inner periphery of the installation hole when the base end surface of the wooden pole is placed on the bottom panel with the rigid protrusions engaged in the recesses; and a plurality of rigid long members inserted into the gaps so as to be arranged in the circumferential direction of the wooden post with their inner and outer sides in a radial direction based on the wooden post abutting against the outer circumferential surface of the lower region of the wooden post and the inner circumferential surface of the installation hole, respectively, wherein the plurality of rigid long members include a plurality of plate-shaped compressed wood pieces whose plate thickness direction is the expansion direction, and the plurality of compressed wood pieces are arranged in the circumferential direction of the wooden post with one side and the other side in the plate thickness direction abutting against the outer circumferential surface of the lower region of the wooden post and the inner circumferential surface of the installation hole , respectively, wherein the support member is capable of changing the installation height of the bottom plate with respect to a reference surface, and the support member has a plurality of bolt members inserted into bolt through holes formed in the mounting surface region of the bottom plate with its base end placed on the reference surface, and a plurality of nut members supporting the bottom plate while being screwed into each of the plurality of bolt members, and the upper end surfaces of the plurality of bolt members are flush with the upper surface of the bottom plate .

In order to achieve the above object, the present invention provides a formwork member having a cylindrical side panel and a rigid bottom panel connected to the cylindrical side panel so as to close the lower end opening of the cylindrical side panel; a support member supporting the formwork member on a reference plane so as to face the upper end opening of the cylindrical side panel upward; foundation concrete poured on the reference plane so as to cover the outer periphery of the cylindrical side panel; a wooden pole having at least a lower region located within the formwork member with a diameter smaller than that of an installation hole defined by the cylindrical side panel; and rigid convex portions and concave portions provided directly or indirectly on one side and the other of a placement surface region of the bottom panel surrounded by the cylindrical side panel and a base end surface of the wooden pole, wherein when the base end surface of the wooden pole is placed on the bottom panel with the rigid convex portions engaged with the concave portions, a rigid convex portion and a concave portion are provided directly or indirectly on one side and the other of a placement surface region of the wooden pole surrounded by the cylindrical side panel and a base end surface of the wooden pole, The wooden post has rigid protrusions and recesses positioned so as to leave a gap, and a plurality of rigid long members inserted into the gaps so as to be arranged in the circumferential direction of the wooden post, with their longitudinal direction aligned with the longitudinal direction of the wooden post and their inner and outer sides in a radial direction based on the wooden post abutting against the outer circumferential surface of the lower region of the wooden post and the inner circumferential surface of the installation hole, respectively. The plurality of rigid long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the plurality of compressed wood pieces are arranged in the circumferential direction of the wooden post, with one and the other sides in the thickness direction abutting against the outer circumferential surface of the lower region of the wooden post and the inner circumferential surface of the installation hole, respectively. The rigid protrusions are formed by the upper parts of rigid members fixed to the bottom plate so as to penetrate vertically through the placement surface area, and the lower parts of the rigid members extending downward from the bottom plate are embedded in foundation concrete.
In this case, the recess is provided in the base end surface of the wooden pole so that the upper portion of the rigid member can be engaged therein.

Further, in order to achieve the above-mentioned object, the present invention provides a formwork member having a support plate, a support member for horizontally supporting the support plate on a reference plane, a rigid member fixed to the support plate so as to form a rigid protrusion extending upward from the support plate, a cylindrical side plate and a rigid bottom plate connected to the cylindrical side plate so as to close the lower end opening of the cylindrical side plate, the formwork member being directly or indirectly supported by the support plate so as to have the upper end opening of the cylindrical side plate facing upward, the bottom plate being provided with a through hole through which the rigid protrusion is inserted, foundation concrete poured on a reference plane so as to cover the outer periphery of the cylindrical side plate, and a wooden post having at least a lower region located within the formwork member which has a smaller diameter than an installation hole defined by the cylindrical side plate and a base end surface provided with a recess into which the rigid protrusion is engaged, the rigid protrusion and a plurality of rigid long members inserted into the gap so as to be arranged in the circumferential direction of the wooden pillar with their longitudinal direction aligned along the longitudinal direction of the wooden pillar and their inner and outer sides in a radial direction based on the wooden pillar abutting against the outer circumferential surface of the lower region of the wooden pillar and the inner circumferential surface of the installation hole, respectively, wherein the plurality of rigid long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the plurality of compressed wood pieces are arranged in the circumferential direction of the wooden pillar with one and the other sides in the thickness direction abutting against the outer circumferential surface of the lower region of the wooden pillar and the inner circumferential surface of the installation hole, respectively.

In the first example, the formwork members are detachably placed upward on the upper surface of the support plate before the foundation concrete is poured.

In a second example, the wooden pillar installation structure is provided with an auxiliary plate fixed to the rigid member at a position spaced upward from the support plate, and the formwork member is detachably placed upward on the upper surface of the auxiliary plate before the foundation concrete is poured.

In a third example, the formwork member is secured to the rigid member at a position spaced upwardly from the support plate.

Further, in order to achieve the above object, the present invention provides a support plate provided with a rigid protrusion extending upward, a support member for supporting the support plate horizontally on a reference plane, foundation concrete poured on the reference plane so as to cover the support plate while having an installation hole opening upward, the foundation concrete being formed so that the rigid protrusion protrudes upward from a bottom surface of the installation hole, and a wooden pole having at least a lower region located within the installation hole with a smaller diameter than the installation hole and a recess in a base end surface into which the rigid protrusion is engaged, the outer circumferential surface of the lower region of the wooden pole and the installation hole when the base end surface of the wooden pole is placed on the bottom surface with the rigid protrusion engaged in the recess. and a plurality of rigid long members inserted into the gap so as to be arranged in the circumferential direction of the wooden pillar with their longitudinal direction aligned with the longitudinal direction of the wooden pillar and their inner and outer sides in a radial direction based on the wooden pillar abutting against the outer circumferential surface of the lower region of the wooden pillar and the inner circumferential surface of the installation hole, respectively, wherein the plurality of rigid long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the plurality of compressed wood pieces are arranged in the circumferential direction of the wooden pillar with one and the other sides in the thickness direction abutting against the outer circumferential surface of the lower region of the wooden pillar and the inner circumferential surface of the installation hole, respectively.

In the various configurations , the rigid elongate member is configured such that its upper end terminates below the upper end of the mounting hole.
In this case, the gap is filled with a filler material in a portion above the upper end of the rigid elongated member.
The filler may be, for example, a mortar, a grout (non-shrink mortar) or an adhesive.

In the various configurations, the plurality of rigid elongated members may preferably include a plurality of shape-unchanging members whose outer dimensions are unchanging. The plurality of shape-unchanging members are spaced apart in the circumferential direction of the wooden pole. The plurality of compressed wooden pieces are arranged in the circumferential direction in the gaps between the shape-unchanging members adjacent in the circumferential direction of the wooden pole.
More preferably, the plurality of shape-invariant members are arranged at equal intervals in the circumferential direction of the wooden pole.

In the various configurations described above, the wooden pole installation structure can preferably have a plate-like rigid body wrapped around the wooden pole so that at least a portion of the rigid body is positioned within the installation hole.

More preferably, the plate-shaped rigid body is wrapped around the wooden pole so that at least a portion of it faces the compressed wood.

The present invention also provides a method for constructing a concrete structure comprising the steps of: a first casting step of casting a first foundation concrete on a reference surface with an insertion hole that opens upward; a rigid member installation step of inserting a lower part of a rigid member into the insertion hole so that an upper part of the rigid member extends upward to form a rigid protrusion; a second casting step of casting a second foundation concrete on the first foundation concrete, the second foundation concrete having an installation hole that opens upward and is formed so that the rigid protrusion protrudes upward from the bottom surface; and inserting a wooden pole into the installation hole, the wooden pole having a lower region located within the installation hole that is smaller in diameter than the installation hole and a recess in a base end surface into which the rigid protrusion is engaged, the base end surface of the wooden pole being placed on the bottom surface of the installation hole while the rigid protrusion is engaged in the recess, and the lower region of the wooden pole being inserted into the installation hole. and a long member installation step of inserting a plurality of rigid long members into the gaps so that they are arranged around a lower region of the wooden pillar with their longitudinal directions aligned with the longitudinal direction of the wooden pillar, wherein the plurality of long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the long member installation step is configured to arrange the plurality of plate-shaped compressed wood pieces around the lower region of the wooden pillar with one and the other sides in the thickness direction of the plurality of plate-shaped compressed wood pieces abutting against the outer peripheral surface of the lower region of the wooden pillar and the inner peripheral surface of the installation hole, respectively.

The present invention also provides a method for installing a formwork member, the method comprising: installing a formwork member having a cylindrical side plate and a bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate, the bottom plate having a rigid protrusion protruding upward within a placement surface area surrounded by the cylindrical side plate, on a reference surface using a support member; and inserting a wooden post into the placement hole, the wooden post having at least a lower area smaller in diameter than a placement hole defined by the cylindrical side plates and having a recess in a base end surface into which the rigid protrusion is engaged, A wooden pole erecting step of placing the base end surface of the wooden pole on the bottom plate while engaging the rigid protrusions with the recesses, and erecting the wooden pole on the bottom plate in the installation hole with a gap existing around the entire circumference of the wooden pole between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole; a long member installation step of inserting a plurality of rigid long members into the gap so as to be arranged around the lower region of the wooden pole with the longitudinal direction aligned with the longitudinal direction of the wooden pole; and a pouring step of pouring foundation concrete onto a reference surface so as to cover an outer periphery of the cylindrical side panel, the plurality of long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, the long member installation step is configured to arrange the plurality of plate-shaped compressed wood pieces around a lower region of the wooden column with one side and the other side in the thickness direction of the plurality of plate-shaped compressed wood pieces abutting the outer periphery of the lower region of the wooden column and the inner periphery of the installation hole, respectively, the support member has a plurality of bolt members inserted into bolt through holes formed in the placement surface region with its base end placed on the reference surface, and a plurality of nut members supporting the bottom plate while being screwed into each of the plurality of bolt members, the installation height of the bottom plate from the reference surface being changeable, and a bolt cutting step of cutting and removing portions of the plurality of bolt members extending above the bottom plate after the formwork member installation step and before the wooden column erection step .

The present invention also provides a method for installing a formwork member, the formwork member having a cylindrical side plate and a bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate, the bottom plate having a rigid protrusion protruding upward within a placement surface area surrounded by the cylindrical side plate, on a reference surface using a support member; a pouring step of pouring foundation concrete on the reference surface so as to cover an outer periphery of the cylindrical side plate; a side plate removing step of removing the cylindrical side plate to form an installation hole opening upward in the foundation concrete; and a method for inserting a wooden pole into the installation hole, the wooden pole having a lower area located within the installation hole that is smaller in diameter than the installation hole and a base end surface provided with a recess into which the rigid protrusion is to be engaged, the base end surface of the wooden pole being placed on the bottom plate while the rigid protrusion is engaged in the recess. and a long member installation process for inserting a plurality of rigid long members into the gaps so that they are arranged around the lower region of the wooden pillar with their longitudinal directions aligned with the longitudinal direction of the wooden pillar, wherein the plurality of long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the long member installation process is configured to arrange the plurality of plate-shaped compressed wood pieces around the lower region of the wooden pillar with one and the other sides in the thickness direction of the plurality of plate-shaped compressed wood pieces abutting against the outer peripheral surface of the lower region of the wooden pillar and the inner peripheral surface of the installation hole, respectively.

Preferably , the support member has a plurality of bolt members inserted into bolt through holes formed in the bottom plate with their base ends placed on a reference surface, and a plurality of nut members supporting the bottom plate while being screwed into each of the plurality of bolt members, so that the installation height of the bottom plate from the reference surface can be changed.

For example, the bottom plate may be configured to have an extension surface area that extends outward from the mounting surface area in a radial direction relative to the wooden pole, and the bolt through holes may be formed in the extension surface area so that the multiple bolt members pass through the extension surface area in the vertical direction.

Alternatively, the bolt through holes through which the bolt members are inserted may be formed in the mounting surface area.
In this case, the wooden pillar installation method includes a bolt cutting process, after the formwork member installation process and before the wooden pillar erection process, in which portions of the plurality of bolt members that extend upward from the bottom plate are cut and removed.

The present invention also provides a method for constructing a wooden post having a lower portion, a lower portion, and a lower surface of the wooden post, the method comprising the steps of: installing a support plate having a rigid member fixed thereto so that at least a portion of the rigid member extends upward on a reference surface using the support member; a first pouring step of pouring a first base concrete onto the reference surface while covering the support plate so that an upper portion of the rigid member protrudes upward to form a rigid convex portion; a second pouring step of pouring a second base concrete onto the first base concrete, the second base concrete having an installation hole formed so that the second base concrete opens upward and has a bottom surface from which the rigid convex portion protrudes upward; and inserting a wooden post into the installation hole, the wooden post having a lower portion having a smaller diameter than the installation hole and a bottom surface on which a recess into which the rigid convex portion is engaged is provided, the base surface of the wooden post being placed on the bottom surface while the rigid convex portion is engaged with the recess, The present invention provides a wooden pole installation method, comprising: a wooden pole installation step of erecting the wooden pole in the installation hole with a gap existing around the entire circumference of the wooden pole between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole; and a long member installation step of inserting a plurality of rigid long members into the gap so that they are arranged around the lower region of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole, wherein the plurality of long members include a plurality of plate-shaped compressed wood pieces whose thickness direction is the expansion direction, and the long member installation step is configured to arrange the plurality of plate-shaped compressed wood pieces around the lower region of the wooden pole with one and the other sides in the thickness direction of the plurality of plate-shaped compressed wood pieces abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively.

Preferably , the plurality of elongated members includes, in addition to the plurality of plate-shaped compressed wooden pieces, a plurality of shape-invariant members whose outer dimensions are invariable.
In this case, the long member installation process includes a shape-invariant member installation process for installing the plurality of shape-invariant members, and a compressed wood installation process for installing the plurality of plate-shaped compressed wood pieces after the shape-invariant member installation process.

The installation process for the non-variable components is configured to install the non-variable components at a distance from each other in the circumferential direction of the wooden pole, with the inner and outer sides of the non-variable components in the radial direction relative to the wooden pole abutting against the outer circumferential surface of the lower region of the wooden pole and the inner circumferential surface of the installation hole, respectively.

The compressed wood installation process is configured to arrange multiple pieces of compressed wood around the wooden pole in the area between adjacent non-changing components in the circumferential direction of the gap, with one side and the other side of the plank-shaped compressed wood in the thickness direction abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively.

Preferably , the wooden pole installation method can include a moisture impregnation step of impregnating the plurality of plank-shaped compressed wood pieces with moisture after the long member installation step.

According to the present invention, even when a single wooden pole is installed or when only a few wooden poles are installed, it is possible to install the wooden pole on the concrete foundation while ensuring the installation strength without forming an engagement groove that opens radially outward in the wooden pole, and furthermore, it is possible to replace the installed wooden pole without destroying the concrete foundation.

FIG. 1 is a vertical cross-sectional view of a wooden pole installation structure according to a first embodiment of the present invention. FIG. 2 is an enlarged view of a portion II taken along line II-II in FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a perspective view of a wooden pole and a plurality of rigid elongated members in the wooden pole installation structure according to the first embodiment. 5(a) and (b) are vertical cross-sectional views showing a concrete pouring process in a wooden pole installation method (first manufacturing method) for manufacturing a wooden pole installation structure according to embodiment 1. FIG. 6 is a vertical cross-sectional view showing the state after the wooden pole installation step. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a vertical cross-sectional view of the wooden pole installation structure in a state after a shape-invariant member installation process in the first wooden pole installation method. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a vertical cross-sectional view of a wooden pole installation structure according to a modified example of the first embodiment, showing a cross section corresponding to FIG. FIG. 11 is a vertical cross-sectional view of a wooden pole installation structure according to a modified example of the first embodiment, showing a cross section corresponding to FIG. FIG. 12 is a vertical cross-sectional view of a wooden pole installation structure according to the second embodiment of the present invention. FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG. FIG. 14 is a vertical cross-sectional view showing a state after a support member installation step in a wooden pole installation method (second wooden pole installation method) for manufacturing a wooden pole installation structure according to embodiment 2. As shown in FIG. FIG. 15 is a vertical cross-sectional view showing the state after the casting process in the second wooden pole installation method. FIG. 16 is a vertical cross-sectional view showing the state after the wooden pole erection step in the second wooden pole installation method. FIG. 17 is a vertical cross-sectional view showing the state of the long member installation step in the second wooden pole installation method. FIG. 18 is a vertical cross-sectional view of a wooden pole installation structure according to a modified example of the second embodiment. FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. FIG. 20 is a vertical cross-sectional view showing the state after the side panel removing step in the wooden pole installation method (a modified example of the second wooden pole installation method) for manufacturing a wooden pole installation structure according to a modified example of the second embodiment. FIG. 21 is a vertical cross-sectional view showing the state after the wooden pole erection step in a modified example of the second wooden pole installation method. FIG. 22 is a vertical cross-sectional view showing the state after the long member installation step in a modified example of the second wooden pole installation method. FIG. 23 is a vertical cross-sectional view of a wooden pole installation structure according to the third embodiment of the present invention. FIG. 24 is a cross-sectional view taken along line XXIV-XXIV in FIG. FIG. 25 is a vertical cross-sectional view showing the state after the formwork member installation process in a wooden post installation method (third wooden post installation method) for manufacturing a wooden post installation structure according to embodiment 3. FIG. 26 is a vertical cross-sectional view showing the state after the bolt cutting process in the third wooden pole installation method. FIG. 27 is a vertical cross-sectional view showing the state after the casting process in the third wooden pillar installation method. FIG. 28 is a vertical cross-sectional view showing the state after the wooden pole erection step in the third wooden pole installation method. FIG. 29 is a vertical cross-sectional view showing the state after the long member installation step in the third wooden pole installation method. FIG. 30 is a vertical cross-sectional view of a wooden pole installation structure according to a modified example of the third embodiment. 31 is a cross-sectional view taken along line XXXI-XXXI in FIG. 30. FIG. FIG. 32 is a vertical cross-sectional view showing the state after the side panel removal step in a wooden pole installation method (a modified example of the third wooden pole installation method) for manufacturing a wooden pole installation structure according to a modified example of embodiment 3. FIG. 33 is a vertical cross-sectional view showing the state after the wooden pole erection step in a modified example of the third wooden pole installation method. FIG. 34 is a vertical cross-sectional view showing the state after the long member installation process in a modified example of the third wooden pole installation method. FIG. 35 is a vertical cross-sectional view of a wooden pole installation structure according to embodiment 4 of the present invention. 36 is a cross-sectional view taken along line XXXVI-XXXVI in FIG. 35. FIG. FIG. 37 is a vertical cross-sectional view of a wooden pole installation structure according to a modified example of the fourth embodiment. 38 is a cross-sectional view taken along line XXXVIII-XXXVIII in FIG. 37. FIG. FIG. 39 is a vertical cross-sectional view of a wooden pole installation structure according to another modified example of the fourth embodiment. 40 is a cross-sectional view taken along line XXXX-XXXX in FIG. FIG. 41 is a vertical cross-sectional view of a wooden pole installation structure according to embodiment 5 of the present invention. 42 is a cross-sectional view taken along line XXXXII-XXXXII in FIG. 41. FIG. FIG. 43 is a vertical cross-sectional view showing the state after the support plate installation step in the wooden pole installation method (fifth wooden pole installation method) for manufacturing a wooden pole installation structure in accordance with embodiment 5. Figure 44 is a plan view showing the state after the support plate installation step in the fifth wooden pillar installation method. Figure 45 is a vertical cross-sectional view showing the state after the first casting step in the fifth wooden pillar installation method. Figure 46 is a vertical cross-sectional view showing the state after the second casting step in the fifth wooden pillar installation method. FIG. 47 is a vertical cross-sectional view showing the state after the wooden pole erection step in the fifth wooden pole installation method. FIG. 48 is a vertical cross-sectional view of a wooden pole installation structure according to another modified example of the first embodiment, which is provided with a plate-shaped rigid body. 49 is a cross-sectional view taken along line XXXXIX-XXXXIX in FIG. 48. FIG.

First embodiment
Hereinafter, an embodiment of a wooden pole installation structure according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a vertical cross-sectional view of a wooden pole installation structure 1A according to this embodiment.
2 and 3 are cross-sectional views taken along lines II-II in FIG. 1 and III-III in FIG. 2, respectively.

The wooden pole installation structure 1A is configured to erect wooden poles on a concrete foundation.

More specifically, as shown in Figures 1 to 3, the wooden pole installation structure has a concrete foundation 10 in which an installation hole 90 that opens upward is formed, a wooden pole 20 that is erected in the installation hole 90, and a rigid convex portion 30 and a concave portion 40 that are provided directly or indirectly on one side and the other side of the bottom surface of the installation hole 90 and the base end surface of the wooden pole 20, respectively.

At least a lower region 22 of the wooden pole 20 located within the installation hole 90 has a smaller diameter than the installation hole 90 .
In other words, when the wooden pillar 20 is erected in the installation hole 90, a gap 95 exists between the outer peripheral surface of the lower region 22 of the wooden pillar 20 and the inner peripheral surface of the installation hole 90 around the entire circumference of the wooden pillar 90.

In this embodiment, as shown in FIG. 1, the rigid protrusion 30 is provided on the bottom surface of the installation hole 90, and the recess 40 is provided on the base end surface of the wooden pole 20.

The rigid convex portion 30 and the concave portion 40 are positioned so that when the rigid convex portion 30 is engaged with the concave portion 40 and the base end surface of the wooden pole 20 is placed on the bottom surface of the installation hole 90, the gap 95 exists around the entire circumference between the outer surface of the lower region 22 of the wooden pole 20 and the inner surface of the installation hole 90.
In this embodiment, as shown in FIG. 2 etc., the rigid convex portion 30 is provided at the center of the installation hole 90 , and the concave portion 40 is provided on the central axis of the wooden pole 20 .

The rigid convex portion 30 is formed of a material having a predetermined rigidity, such as stainless steel.
In this embodiment, as shown in Figure 1, the rigid convex portion 30 is formed by the upper part of a rigid member 35 such as stainless steel, the upper part of which extends upward from the bottom surface of the installation hole 90 and the lower part of which is embedded in the foundation concrete 10.

The wooden pole installation structure 1A further includes a plurality of rigid elongated members 50 inserted into the gap 95 so as to be arranged circumferentially around the lower region 22 of the wooden pole 20.

FIG. 4 shows a perspective view of the wooden pole 20 and the plurality of rigid elongated members 50.
As shown in Figures 1 to 4, the multiple rigid elongated members 50 are inserted into the gaps 95 so as to be arranged circumferentially around the wooden pillar 20, with their longitudinal direction aligned with the longitudinal direction of the wooden pillar 20 and their inner and outer sides in the radial direction based on the wooden pillar 20 abutting the outer peripheral surface of the lower region 22 of the wooden pillar 20 and the inner peripheral surface of the installation hole 90, respectively.
As shown in FIG. 2, in this embodiment, twenty-four of the rigid elongated members 50 are arranged in the circumferential direction of the wooden pole 20 .

The plurality of long members 50 include a plurality of compressed wooden boards 52 whose thickness direction is the expansion direction.
The multiple compressed wooden pieces 52 are arranged circumferentially around the wooden post 20 with one side and the other side in the board thickness direction abutting the outer peripheral surface of the lower region 22 of the wooden post 20 and the inner peripheral surface of the installation hole 90, respectively.

Compressed wood 52 can be formed, for example, by compressing a plank of wood of the desired shape in a sealed environment at a temperature of 90°C for a sufficient amount of time. Alternatively, compressed wood 52 can be formed by compressing a plank of wood of the desired shape in an open environment at 110°C to 130°C. This method of formation makes it possible to efficiently form compressed wood with deformation recovery properties without compromising the structural strength.

With the wooden pole installation structure 1A configured as described above, the wooden pole 20 can be firmly supported upright in the installation hole 90 by the expansion action of the multiple compressed wooden pieces 52, while the radial position of the wooden pole 20 relative to the installation hole 90 is fixed at the desired position by the rigid convex portion 30 and the concave portion 40.

Furthermore, since there is no need to form an engagement groove that opens radially outward in the wooden pole 20, the present invention can be effectively applied to a wooden pole 20 with a small diameter.
Furthermore, by removing one or more of the compressed wooden pieces 52, the wooden pillar 20 can be removed from the concrete foundation 10 without destroying the concrete foundation 10.

As shown in FIGS. 1 to 4, in this embodiment, some of the plurality of elongated members 50 are formed as a plurality of shape-invariant members 55 whose outer dimensions are invariable.
That is, in this embodiment, the plurality of long members 50 include the plurality of plate-shaped compressed wood pieces 52 and the plurality of shape-invariant members 55 .

The shape-invariant member 55 is made of a material whose outer dimensions are invariable, such as stainless steel, iron, or reinforced plastic.

As shown in Figures 2 and 4, the multiple shape-unchanging members 55 are spaced apart in the circumferential direction of the wooden pole 20, and the multiple compressed wood pieces 52 are arranged in the circumferential direction between the shape-unchanging members 55 adjacent to each other in the gap 95 in the circumferential direction of the wooden pole 20.

In this way, by providing the plurality of shape-unchanging members 55 spaced apart in the circumferential direction, the radial width of the gap 95 can be made uniform or approximately uniform around the entire circumference of the wooden pole 20, and a good standing posture of the wooden pole 20 can be obtained.

Preferably, the plurality of shape-invariant members 55 are disposed at equal intervals in the circumferential direction of the wooden pole 20 .
As shown in FIG. 2, in this embodiment, four of the shape-unchanging members 55 are disposed at 90 degree intervals in the circumferential direction of the wooden pole 20.
Of course, it is also possible to arrange the shape-invariant members 55 in a number other than four, such as two or three, at equal intervals in the circumferential direction of the wooden pole 20 .

Of course, it is also possible for all of the plurality of long members 50 to be the plurality of plate-shaped compressed wood pieces 52.

A method for manufacturing the wooden pole installation structure (wooden pole installation method) will be described below.
The wooden pole installation method has an installation hole 90 that opens upward, and includes a pouring step of pouring foundation concrete 10 so that a rigid protrusion 30 that protrudes upward is provided on the bottom surface of the installation hole 90.

In this embodiment, the casting process includes a first casting process (Figure 5(a)) of casting a first foundation concrete 10(1) to a predetermined thickness on a reference surface 12 (e.g., the top surface of a basing concrete) so that there is an insertion hole 36 that opens upward and into which the lower part of the rigid member 35 can be inserted, a rigid member installation process (Figure 5(a)) of inserting the lower part of the rigid member 35 into the insertion hole 36 so that the upper part extends upward to form the rigid convex portion 30, and a second casting process (Figure 5(b)) of casting a second foundation concrete 10(2) having the installation hole 90 that opens upward and is formed so that the rigid convex portion 30 protrudes upward from the bottom surface onto the top surface of the first foundation concrete 10(1).
If a gap exists between the lower portion of the rigid member 35 and the insertion hole 36, it can be filled with a filler such as mortar.
In addition, the installation hole 90 can be efficiently formed, for example, by pouring the second foundation concrete 20 while a spacer (not shown) of a size corresponding to the installation hole 90 is placed on the first foundation concrete 10, and then removing the spacer.

The wooden pole installation method further includes a wooden pole erection step.
FIG. 6 shows a vertical cross-sectional view of the wooden pole installation structure 1A after the wooden pole erection step.
FIG. 7 is a cross-sectional view taken along line VII-VII in FIG.

As shown in Figures 5 to 7, the wooden pole erection process is configured to insert a wooden pole 20, at least the lower region 22 located within the installation hole 90, into the installation hole 90, the lower region 22 of which has a smaller diameter than the installation hole 90 and a recess 40 in the base end surface into which the rigid protrusion 30 is engaged, and place the base end surface of the wooden pole 20 on the bottom surface of the installation hole 90 while engaging the rigid protrusion 30 with the recess 40, so that a gap 95 exists between the outer peripheral surface of the lower region 22 of the wooden pole 20 and the inner peripheral surface of the installation hole 90 around the entire circumference of the wooden pole 20, and erect the wooden pole 20 in the installation hole 90.

The wooden pole installation method includes a long member installation process in which, after the wooden pole erection process, the plurality of rigid long members 50 are inserted into the gap 95 so that they are arranged around the lower region 22 of the wooden pole 20 with their longitudinal direction aligned with the longitudinal direction of the wooden pole 20.

As described above, in this embodiment, the plurality of elongated members 50 includes the plurality of compressed wood pieces 52 and the plurality of shape-invariant members 55.

In this case, the long member installation process includes a shape-invariant member installation process for installing the plurality of shape-invariant members 55, and a compressed wood installation process for installing the plurality of planar compressed wood pieces 52 after the shape-invariant member installation process.

FIG. 8 shows a vertical cross-sectional view of the wooden pole installation structure 1A after the shape-invariant member installation process.
FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.

As shown in FIG. 9, the installation process of the non-variable-shape members is configured to install the non-variable-shape members 55 at a distance from each other in the circumferential direction of the wooden pole 20, with the inner and outer sides of the non-variable-shape members 55 in the radial direction based on the wooden pole 20 being in contact with the outer circumferential surface of the lower region 22 of the wooden pole 20 and the inner circumferential surface of the installation hole 90, respectively.

In this embodiment, the multiple shape-invariant members 55 are arranged at equal intervals around the circumference of the wooden pole 20.

The shape-unchanging member 55 is made of a material whose shape does not change, such as stainless steel, iron, or reinforced plastic, and therefore, after the shape-unchanging member installation process, the radial distance of the gap 95 between the outer peripheral surface of the lower region 22 of the wooden pole 20 and the inner peripheral surface of the installation hole 90 is the same or approximately the same around the entire circumference of the wooden pole 20.

The compressed wood installation process is configured to arrange the multiple plate-shaped compressed members 52 around the wooden pole 20 in the area between adjacent shape-unchanging members 55 in the circumferential direction of the gap 95, with one side and the other side of the plate-thickness direction of the plate-shaped compressed wood 52 abutting against the outer peripheral surface of the lower region 22 of the wooden pole and the inner peripheral surface of the installation hole 90, respectively, thereby creating the state shown in Figure 2.

In this embodiment, the longitudinal length of the plurality of elongated members 50 is the same as the depth of the installation hole 90 .
That is, as shown in Figures 1 and 3, the upper ends of the multiple elongated members 50 are positioned at approximately the same position as the upper surface of the foundation concrete 10.

Instead of the long member 50, it is also possible to use a long member 50' (a plate-shaped compressed wood 52' and a shape-unchanging member 55') whose longitudinal length is shorter than the depth of the installation hole.

10 and 11 are longitudinal sectional views of a wooden pole installation structure 1B according to a modified example in which the long member 50' is used.
10 and 11 are views corresponding to FIGS. 1 and 3, respectively.
10 and 11, the same members as those in this embodiment are denoted by the same reference numerals.

As shown in Figures 10 and 11, in the wooden pillar installation structure 1B, the upper end of the long member 50' terminates below the upper end of the installation hole 90, and the portion of the gap 95 above the upper end of the long member 50' is filled with filling material 60.
As the filler 60, for example, mortar, grout (non-shrink mortar), or adhesive can be used.

In such a modified example, if a large impact force is applied to the wooden pole 20 due to an earthquake or the like after installation, the filler material 60 will be damaged at a position according to the direction of the impact force.
Therefore, the long member 50' that received the impact can be appropriately identified from the damaged portion of the filler 60, and the long member 50' can be efficiently replaced or repaired.

Embodiment 2
Hereinafter, a wooden pole installation structure 2A according to another embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 12 shows a vertical cross-sectional view of a wooden pole installation structure 2A according to this embodiment.
FIG. 13 is a cross-sectional view taken along line XIII-XIII in FIG.
In the drawings, the same members as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 2A of this embodiment differs from the wooden pole installation structure 1A of the first embodiment mainly in that it has a formwork member 100.

That is, the wooden pillar installation structure 2A includes the formwork member 100, a support member 150 that supports the formwork member 100 on the reference plane 12, the foundation concrete 10, the wooden pillar 20, the rigid convex portion 30, the concave portion 40, and the plurality of rigid long members 50.

As shown in Figures 12 and 13, the formwork member 100 has a cylindrical side plate 110 and a rigid bottom plate 120 connected to the cylindrical side plate 110 so as to close the lower end opening of the cylindrical side plate 110.

The bottom plate 120 is made of, for example, stainless steel or iron.
The cylindrical side plate 110 is made of, for example, stainless steel, iron, or plastic.

In this embodiment, the cylindrical side plate 110 and the bottom plate 120 form an installation hole 90 for the wooden pole 20 .
That is, the inner peripheral surface of the cylindrical side plate 110 forms the inner peripheral surface of the installation hole 90 , and a mounting surface area 122 of the upper surface of the bottom plate 120 surrounded by the cylindrical side plate 110 forms the bottom surface of the installation hole 90 .

The support member 150 supports the formwork member 100 so that the upper end opening of the cylindrical side panel 110 faces upward on a reference surface 12 (e.g., the top surface of the basin concrete) on which the foundation concrete 10 is poured.
In this embodiment, the support member 150 is capable of changing the installation height of the bottom plate 120 with respect to the reference surface 12 .

More specifically, as shown in Figures 12 and 13, the support member 150 has a plurality of bolt members 152 that are inserted into bolt through holes (not shown) formed in the bottom plate 120 with their base ends resting on the reference surface 12, and a plurality of nut members 155 that support the bottom plate 120 while being screwed into each of the plurality of bolt members 152.

In addition, reference numeral 157 in FIG. 12 and FIG. 13 denotes a rotation-preventing nut that is screwed onto the portion of the bolt members 155 that extends upward from the bottom plate 120, and reference numeral 158 denotes a washer.

In this embodiment, the bottom plate 120 has the mounting surface area 122 surrounded by the cylindrical side plate 110, and an extension surface area 125 extending radially outward from the mounting surface area 122 with respect to the wooden pole 20.

The bolt through holes into which the plurality of bolt members 155 are inserted are formed in the extension surface region 125, and the plurality of bolt members 155 pass through the extension surface region 125 in the vertical direction.

The rigid protrusion 30 is provided on the placement surface area 122 so as to protrude upward.
In this embodiment, as shown in Figures 12 and 13, a rigid member 35 made of stainless steel or the like is fixed to the bottom plate 120 so as to penetrate vertically through the mounting surface area 122, and the upper part of the rigid member 35 acts as the rigid protrusion 30.

The lower portion of the rigid member 35 that extends below the bottom plate 120 is embedded in the foundation concrete 10, thereby improving the installation strength of the rigid protrusion 30.

The wooden pole installation structure 2A is manufactured by the wooden pole installation method described below.
The wooden pillar installation method includes a formwork member installation process (see Figure 14) in which the formwork member 100 is installed on a reference surface 12 using the support member 150, and a pouring process (see Figure 15) in which foundation concrete 10 is poured around the cylindrical side panel 110 so that its upper surface is at the same position as the upper end of the cylindrical side panel 110 or lower than the upper end of the cylindrical side panel 110.
In this embodiment, the pouring process includes a first pouring process of pouring a first foundation concrete 10 (1) onto the reference surface 12 so that it is approximately the same thickness as the installation position of the bottom plate 12, and a second pouring process of pouring a second foundation concrete 10 (2) onto the first foundation concrete 10 (1) so that its upper surface is at the same position as the upper end of the cylindrical side plate 110 or lower than the upper end of the cylindrical side plate 110.

In this embodiment, as described above, the support member 150 is capable of changing the installation height of the bottom plate 120 .
Therefore, in the formwork member installation process, the height of the bottom plate 120 with respect to the reference surface 12 is adjusted to a desired position using the support members 150.

The wooden pillar installation method further includes the wooden pillar erection process (see FIG. 16) that is performed after the formwork member installation process, and the long member installation process (see FIG. 17) that is performed after the wooden pillar erection process.

In this embodiment, the casting step is carried out after the formwork member installation step and before the wooden pillar erection step, but the present invention is not limited to this embodiment.
The casting process can also be carried out at any timing after the formwork member installation process, for example, after the long member installation process.

FIG. 18 shows a vertical cross-sectional view of a wooden pole installation structure 2B according to a modified example of this embodiment.
FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG.
In the drawings, the same members as those in this embodiment and the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 2B according to the modified example differs from the wooden pole installation structure 2A according to the present embodiment only in that the cylindrical side panel 110 is omitted.

The wooden pole installation structure 2B is manufactured by the wooden pole installation method described below.
That is, the wooden pillar installation method includes the formwork member installation process (see Figure 14), the pouring process (see Figure 15) which is performed after the formwork member installation process, a side panel removal process (see Figure 20) which is performed after the pouring process and which removes the cylindrical side panel 110 to form an installation hole 90 which opens upward in the foundation concrete 10, the wooden pillar erection process (see Figure 21) which is performed after the side panel removal process, and the long member installation process (see Figure 22) which is performed after the wooden pillar erection process.

In this modified example, the cylindrical side plate 110 is preferably connected to the bottom plate 120 by partial welding or adhesive, which facilitates the removal of the cylindrical side plate 110 during the side plate removal process.

In particular, in a configuration in which the tubular member 110 is connected to the bottom plate 120 by adhesive bonding, the tubular side plate 110 can be made of, for example, a plastic that is strong enough to withstand the pressure from the concrete during the casting process.

Embodiment 3
Hereinafter, a wooden pole installation structure 3A according to another embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 23 shows a vertical cross-sectional view of a wooden pole installation structure 3A according to this embodiment.
FIG. 24 is a cross-sectional view taken along line XXIV-XXIV in FIG.
In the drawings, the same members as those in the first and second embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 3A according to this embodiment differs from the wooden pole installation structure 2A according to the second embodiment in that the formwork member 100 is changed to a formwork member 100', and the bolt through-hole into which the bolt member 152 is inserted is formed in the mounting surface area 122.

The formwork member 100' differs from the formwork member 100 in that the bottom plate 120 has been changed to a bottom plate 120'.

In detail, as shown in Figures 23 and 24, the formwork member 100' has the cylindrical side plate 110 and a bottom plate 120' connected to the cylindrical side plate 110 so as to close the lower end opening of the cylindrical member 110.
Compared to the bottom plate 120, the bottom plate 120' has the extension surface area 125 removed.

In the present embodiment, the bolt through-hole into which the bolt member 152 is inserted is formed in the mounting surface area 122 .
The upper end surfaces of the plurality of bolt members 152 are flush with the upper surface of the bottom plate 120'.

The wooden pole installation structure 3A is manufactured by the following wooden pole installation method.
The wooden pillar installation method includes a formwork member installation process (see Figure 25) of installing the formwork member 100' on the reference plane 12 using the support member 150, a bolt cutting process (see Figure 26) of cutting and removing the portions of the plurality of bolt members 152 that extend upward from the bottom plate 120', a pouring process (see Figure 27) of pouring foundation concrete 20 around the cylindrical side plate 110 so that the upper surface is at the same position as the upper end of the cylindrical side plate 110 or lower than the upper end of the cylindrical side plate 110, the wooden pillar erection process (see Figure 28), and the long member installation process (see Figure 29) which is performed after the wooden pillar erection process.

The bolt cutting process can be performed at any time after the formwork member installation process and before the wooden pillar installation process.

Furthermore, the casting process can be carried out at any time after the formwork member installation process.
In this embodiment, the pouring process includes a first pouring process of pouring a first foundation concrete 10(1) of approximately the same thickness as the installation height of the bottom plate 120' onto the reference plane 12, and a second pouring process of pouring a second foundation concrete 10(2) on top of the first foundation concrete 10(1) so that its upper surface is at the same position as the upper end of the cylindrical side plate 110 or lower than the upper end of the cylindrical side plate 110.

FIG. 30 shows a vertical cross-sectional view of a wooden pole installation structure 3B according to a modified example of this embodiment.
FIG. 31 shows a cross-sectional view taken along line XXXI-XXXI in FIG.
In the drawings, the same members as those in this embodiment and the first and second embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 3B according to the modified example differs from the wooden pole installation structure 3A according to the present embodiment only in that the cylindrical side panel 110 is omitted.

The wooden pole installation structure 3B is manufactured by the wooden pole installation method described below.
That is, the wooden pillar installation method includes the formwork member installation process (see Figure 25), the bolt cutting process (see Figure 26), the pouring process (see Figure 27), a side panel removal process (see Figure 32) which is performed after the pouring process, in which the cylindrical side panel 110 is removed to form an installation hole 90 which opens upward in the foundation concrete 10, the wooden pillar erection process (see Figure 33) which is performed after the side panel removal process, and the long member installation process (see Figure 34) which is performed after the wooden pillar erection process.

The bolt cutting process can be performed at any timing after the formwork member installation process and before the wooden pillar installation process.
In addition, the casting step can be performed at any timing after the formwork member installation step and before the side panel removal step.

Fourth embodiment
Hereinafter, a wooden pole installation structure 4A according to another embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 35 shows a vertical cross-sectional view of a wooden pole installation structure 4A according to this embodiment.
FIG. 36 shows a cross-sectional view taken along line XXXVI-XXXVI in FIG.
In the drawings, the same members as those in the first to third embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 4A of this embodiment differs from the wooden pole installation structure 2A of the second embodiment in that it has a formwork member 200 instead of the formwork member 100, and further has a support plate 250 that supports the formwork member 200.

In detail, the wooden pole installation structure 4A has the support plate 250, the support member 150, the rigid member 35, the formwork member 200, the foundation concrete 10, the wooden pole 20, and the plurality of rigid long members 50.

The support plate 250 has an overlapping area 252 that overlaps with the cylindrical side plate 110 in a plan view, and an extension surface area 255 that extends radially outward from the overlapping area 252 with respect to the wooden pole 20.

In this embodiment, the support member 150 supports the support plate 250 in a horizontal position and with a variable installation height relative to the reference surface 12.

In more detail, the bolt through holes into which the bolt members 155 are inserted are formed in the extension surface region 255, and the multiple bolt members 155 pass through the extension surface region 255 in the vertical direction.

The rigid member 35 is fixed to the support plate 250 such that an upper portion thereof forms the rigid protrusion 40 that extends upward from the support plate 250 .
In this embodiment, as shown in FIG. 35 , the upper portion of the rigid member 35 extends upward from the support plate 250 to form the rigid convex portion 40, while the lower portion extends downward from the support plate 250 and is embedded in the foundation concrete 10.

The formwork member 200 has the cylindrical side plate 110 and a rigid bottom plate 220 connected to the cylindrical side plate 110 so as to close the lower end opening of the cylindrical side plate 110 .
The bottom plate 220 is provided with a through hole through which the rigid protrusion 30 passes.

The formwork member 200 is placed on the upper surface of the support plate 250 with the rigid protrusion 30 inserted into the through hole of the bottom plate 220.

The formwork member 200 can be detachably placed upward on the upper surface of the support plate 250 before the foundation concrete 10 is poured, or can be fixed to the upper surface of the support plate 250 before the foundation concrete 10 is poured.

FIG. 37 shows a vertical cross-sectional view of a wooden pole installation structure 4B according to a modified example of this embodiment.
FIG. 38 shows a cross-sectional view taken along line XXXVIII-XXXVIII in FIG.
In the drawings, the same members as those in this embodiment and the above-described embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pillar installation structure 4B differs from the wooden pillar installation structure 4A in that the formwork member 200 is spaced upward from the support plate 250.

In the wooden pillar installation structure 4B, the formwork member 200 is fixed to the rigid member 35, and is indirectly supported by the support plate 250.

FIG. 39 shows a vertical cross-sectional view of a wooden pole installation structure 4C according to another modified example of the present embodiment.
FIG. 40 shows a cross-sectional view taken along line XXXX-XXXX in FIG.
In the drawings, the same members as those in this embodiment and the above-described embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pole installation structure 4C differs from the wooden pole installation structure 4A in that it has an auxiliary plate 260 fixed to the rigid member 35 at a position spaced upward from the support plate 250, and that the formwork member 200 is placed on the auxiliary plate 260.

In the wooden pillar installation structure 4C, the formwork member 200 can be detachably placed upward on the upper surface of the auxiliary plate 260 before the foundation concrete 10 is poured, or can be fixed to the upper surface of the auxiliary plate 260 before the foundation concrete 10 is poured.

In addition, in the wooden pole installation structure 4B, the lower end of the rigid member 35 is positioned at the same position as the lower end surface of the support plate 250, but instead, it is possible to fix the rigid member 35 to the support plate 250 so that the lower part of the rigid member 35 extends downward from the support plate 250.

In addition, in the fourth embodiment and its variations, it is also possible to remove the cylindrical side plate 110, as in the variations of the second and third embodiments.

Fifth embodiment
Hereinafter, a wooden pole installation structure 5A according to another embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 41 shows a vertical cross-sectional view of a wooden pole installation structure 5A according to this embodiment.
FIG. 42 shows a cross-sectional view taken along line XXXXII-XXXXII in FIG.
In the drawings, the same members as those in the first to fourth embodiments are given the same reference numerals, and the description thereof will be omitted as appropriate.

The wooden pillar installation structure 5A differs from the wooden pillar installation structure 4B in that the formwork member 200 has been omitted.

In detail, as shown in Figures 41 and 42, the wooden pole installation structure 5A includes the support plate 250 on which the rigid protrusions 30 extending upward are provided, the support member 150 that horizontally supports the support plate 250 on the reference plane 12, foundation concrete 10 that is poured on the reference plane 12 to cover the support plate 250 while having an installation hole 90 that opens upward, and is formed so that the rigid protrusions 30 protrude upward from the bottom surface of the installation hole 90, the wooden pole 20, and the multiple rigid long members 50.

In this embodiment, the rigid member 35 is fixed to the support plate 250 so that its lower end is positioned at approximately the same position as the lower surface of the support plate 250, and the upward extending portion of the rigid member 35 forms the rigid protrusion 30.

Of course, it is also possible to attach the rigid member 35 to the support plate 250 so that the upper portion of the rigid member 35 extends upward and the lower portion extends downward.

In this embodiment, the foundation concrete 10 includes the first foundation concrete 10(1) that is poured onto the reference surface 12 so as to cover the support plate 250 and have the upper part of the rigid member 35 protrude upward to form the rigid convex portion 30, and the second foundation concrete 10(2) that is poured onto the first foundation concrete 10(1) and has the installation hole 90 formed so that it opens upward and the rigid convex portion 30 protrudes upward from the bottom surface.

The wooden pole installation structure 5A is manufactured by the following wooden pole installation method.
The wooden pole installation method includes a support plate installation process (see Figures 43 and 44) in which the support plate 250 to which the rigid member 35 is fixed so that at least a portion of it extends upward is installed on the reference surface 12 using the support member 150; a first pouring process (see Figure 45) in which the first foundation concrete 10 (1) is poured on the reference surface 12 so as to cover the support plate 250 and to form the rigid protrusion 30 by having the upper part of the rigid member 35 protrude upward; a second pouring process (see Figure 46) in which the second foundation concrete 10 (2) having the installation hole 90 formed so as to open upward and have the rigid protrusion 30 protrude upward from the bottom surface is poured on the first foundation concrete 10 (1); the wooden pole erection process (see Figure 47); and the long member installation process (see Figures 41 and 42) which is performed after the wooden pole erection process.

In this embodiment, as in the first embodiment, the installation hole 90 can be efficiently formed, for example, by placing a spacer (not shown) of a size equivalent to the installation hole 90 on the first foundation concrete 10, pouring the second foundation concrete 20, and then removing the spacer.

Of course, in the second to fifth embodiments and their modified examples, as in the modified example of the first embodiment (FIGS. 10 and 11), the plurality of elongated members 50 can be replaced with the plurality of elongated members 50', and the filler material 60 can be filled in the portion of the gap 95 above the upper end of the elongated members 50'.

In addition, in each of the above-described embodiments and variations, the wooden pole 20 has a circular cross section, but the present invention is not limited to this shape, and it is also possible to use a wooden pole with a rectangular or elliptical cross section, etc.

Furthermore, in each of the above-mentioned embodiments and modified examples, the rigid protrusion 30 is cylindrical, but of course, the present invention is not limited to such a form, and the rigid protrusion 30 can also be spherical, conical, or rectangular.

In addition, the wooden pillar installation methods 1A to 5A in each of the above-described embodiments and modified examples may include a moisture impregnation process in which the plurality of compressed wooden pieces 52 (52') are impregnated with moisture after the plurality of compressed wooden pieces 52 are installed in the gap 95.
According to this configuration, the expansion of the plate-shaped compressed wood 52 ( 52 ′) can be made to act approximately uniformly in the circumferential direction of the wooden pole 20 .
The moisture may be water or water containing a preservative.

Furthermore, the wooden pole installation structures 1A to 5A according to the above-mentioned respective embodiments and modified examples may include a plate-like rigid body 70 wrapped around a part or the entirety of the wooden pole 20 in the circumferential direction.
The plate-like rigid body 70 may be made of, for example, a copper plate, a stainless steel plate, an iron plate, or carbon fiber.

The plate-shaped rigid body 70 is wrapped around the wooden pole 20 so that at least a portion of it is positioned within the installation hole 90 .
Preferably, when the wooden pole 20 is erected in the installation hole 90, at least a portion of the plate-shaped rigid body 70 is wrapped around the wooden pole 20 in a position facing the compressed wood piece 52 (52').

Preferably, a mounting groove 25 is formed in the wooden pole 20, the length of which in the longitudinal direction of the wooden pole 20 is the same as the width of the plate-shaped rigid body 70 and the depth of which is the same as the thickness of the plate-shaped rigid body 70, and the plate-shaped rigid body 70 can be mounted in the mounting hole 25.
According to this configuration, the outer surface of the plate-like rigid body 70 can be made flush with the portion of the outer surface of the wooden pole 20 where the plate-like rigid body 70 is not present.
The plate-like rigid body 70 can be fixed to the wooden pole 20 using, for example, an adhesive.

FIG. 48 shows a vertical cross-sectional view of a wooden pole installation structure 1C according to another modified example of the first embodiment, which is provided with the plate-shaped rigid body 70, as an example of a wooden pole installation structure provided with the plate-shaped rigid body 70.
49(a) and (b) show cross-sectional views taken along line XXXXIX-XXXXIX in FIG. 48.

As shown in Figure 49(a), it is possible to wrap the plate-shaped rigid body 70 around the entire circumference of the wooden pole 20, or as shown in Figure 49(b), it is also possible to wrap the plate-shaped rigid body 70 around only a portion of the circumference of the wooden pole 20.
Of course, it is also possible to provide the plate-shaped rigid body 70 in the wooden pole installation structures according to other embodiments and modified examples.

Reference Signs List 1A to 5A Wooden pole installation structure 10 Concrete foundation 10(1), 10(2) First and second concrete foundations 20 Wooden pole 22 Lower region of wooden pole 30 Rigid protrusion 35 Rigid member 40 Recess 50, 50' Rigid long member 52 Plate-shaped compression member 55 Shape-invariant member 60 Filler 70 Plate-shaped rigid body 90 Installation hole 95 Gap 100, 100', 200 Formwork member 110 Cylindrical side plate 120, 120', 220 Bottom plate 122 Placement surface region 125 Extension surface region 150 Support member 152 Bolt member 155 Nut member 250 Support plate

Claims (20)

a formwork member having a cylindrical side plate and a rigid bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate;
a support member that supports the formwork member on a reference plane so that an upper end opening of the cylindrical side panel faces upward;
A foundation concrete is poured on a reference surface so as to cover an outer periphery of the cylindrical side plate;
A wooden post having a lower region located within the formwork member and having a diameter smaller than that of an installation hole defined by the cylindrical side plate;
a rigid protrusion and a recess provided directly or indirectly on one side and the other side of a mounting surface area of the bottom plate surrounded by the cylindrical side plate and a base end surface of the wooden pole, the rigid protrusion and the recess positioned so that a gap exists over the entire circumference of the wooden pole between an outer peripheral surface of the lower region of the wooden pole and an inner peripheral surface of the installation hole when the base end surface of the wooden pole is placed on the bottom plate while the rigid protrusion is engaged with the recess;
a plurality of rigid elongated members inserted into the gaps so as to be arranged in the circumferential direction of the wooden pole, with the longitudinal direction aligned with the longitudinal direction of the wooden pole and the inner and outer sides of the members abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively, in a radial direction based on the wooden pole;
The plurality of rigid elongated members include a plurality of plank-shaped compressed wooden pieces each having a thickness direction as an expansion direction,
The plurality of compressed wooden pieces are arranged in the circumferential direction of the wooden pole with one side and the other side in the board thickness direction abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole ,
The support member is configured to change the installation height of the bottom plate relative to a reference surface,
the support member has a plurality of bolt members inserted into bolt through holes formed in a mounting surface area of the bottom plate with a base end portion placed on a reference surface, and a plurality of nut members that support the bottom plate while being screwed into each of the plurality of bolt members,
A wooden pole installation structure characterized in that the upper end surfaces of the multiple bolt members are flush with the upper surface of the bottom plate . a formwork member having a cylindrical side plate and a rigid bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate;
a support member that supports the formwork member on a reference plane so that an upper end opening of the cylindrical side panel faces upward;
A foundation concrete is poured on a reference surface so as to cover an outer periphery of the cylindrical side plate;
A wooden post having a lower region located within the formwork member and having a diameter smaller than that of an installation hole defined by the cylindrical side plate;
a rigid protrusion and a recess provided directly or indirectly on one side and the other side of a mounting surface area of the bottom plate surrounded by the cylindrical side plate and a base end surface of the wooden pole, the rigid protrusion and the recess positioned so that a gap exists over the entire circumference of the wooden pole between an outer peripheral surface of the lower region of the wooden pole and an inner peripheral surface of the installation hole when the base end surface of the wooden pole is placed on the bottom plate while the rigid protrusion is engaged with the recess;
a plurality of rigid elongated members inserted into the gaps so as to be arranged in the circumferential direction of the wooden pole, with the longitudinal direction aligned with the longitudinal direction of the wooden pole and the inner and outer sides of the members abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively, in a radial direction based on the wooden pole;
The plurality of rigid elongated members include a plurality of plank-shaped compressed wooden pieces each having a thickness direction as an expansion direction,
The plurality of compressed wooden pieces are arranged in the circumferential direction of the wooden pole with one side and the other side in the board thickness direction abutting against the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole ,
the rigid protrusion is formed by an upper portion of a rigid member fixed to the bottom plate so as to vertically penetrate the placement surface area,
A lower portion of the rigid member extending downward from the bottom plate is embedded in foundation concrete,
A wooden pole installation structure, characterized in that the recess is provided in the base end surface of the wooden pole so that the upper part of the rigid member can engage therewith . A support plate;
A support member that horizontally supports the support plate on a reference plane;
a rigid member fixed to the support plate so as to form a rigid protrusion extending upward from the support plate;
a formwork member having a cylindrical side plate and a rigid bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate, the formwork member being directly or indirectly supported by the support plate so that an upper end opening of the cylindrical side plate faces upward, the bottom plate being provided with a through hole through which the rigid protrusion passes;
A foundation concrete is poured on a reference surface so as to cover an outer periphery of the cylindrical side plate;
a wooden pole having at least a lower region located within the formwork member that is smaller in diameter than the installation hole defined by the cylindrical side plate and a recess in the base end surface into which the rigid protrusion is inserted, the wooden pole being configured such that when the base end surface of the wooden pole is placed on the bottom plate with the rigid protrusion inserted in the recess, a gap exists over the entire circumference of the wooden pole between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole;
a plurality of rigid elongated members inserted into the gaps so as to be arranged in the circumferential direction of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole and their inner and outer sides in the radial direction based on the wooden pole being in contact with the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively;
The plurality of rigid elongated members include a plurality of plank-shaped compressed wooden pieces each having a thickness direction as an expansion direction,
A wooden pole installation structure characterized in that the multiple compressed wooden pieces are arranged circumferentially around the wooden pole with one side and the other side in the board thickness direction abutting the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively. 4. The wooden pole installation structure according to claim 3 , wherein the formwork members are detachably placed upward on the upper surface of the support plate before the foundation concrete is poured. an auxiliary plate fixed to the rigid member at a position spaced upward from the support plate;
4. The wooden pole installation structure according to claim 3 , wherein the formwork member is detachably placed upward on the upper surface of the auxiliary plate before the foundation concrete is poured. The wooden pole installation structure according to claim 3 , characterized in that the formwork member is fixed to the rigid member at a position spaced upward from the support plate. A support plate having a rigid protrusion extending upward;
A support member that horizontally supports the support plate on a reference plane;
A foundation concrete is poured on a reference surface so as to cover the support plate while having an installation hole that opens upward, and the foundation concrete is formed so that the rigid convex portion protrudes upward from the bottom surface of the installation hole;
a wooden pole having at least a lower region located within the installation hole with a diameter smaller than that of the installation hole and a recess in a base end surface into which the rigid protrusion is inserted, the wooden pole being configured such that when the base end surface of the wooden pole is placed on the bottom surface while the rigid protrusion is inserted into the recess, a gap exists over the entire circumference of the wooden pole between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole;
a plurality of rigid elongated members inserted into the gaps so as to be arranged in the circumferential direction of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole and their inner and outer sides in the radial direction based on the wooden pole being in contact with the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively;
The plurality of rigid elongated members include a plurality of plank-shaped compressed wooden pieces each having a thickness direction as an expansion direction,
A wooden pole installation structure characterized in that the multiple compressed wooden pieces are arranged circumferentially around the wooden pole with one side and the other side in the board thickness direction abutting the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively. an upper end of the rigid elongated member terminates below an upper end of the mounting hole;
8. The wooden pole installation structure according to claim 1, wherein a filler material is filled in the gap above the upper end of the rigid elongated member. the plurality of rigid elongated members includes a plurality of shape-invariant members having shape dimensions that are invariant;
The plurality of shape-invariant members are spaced apart from one another in the circumferential direction of the wooden pole,
The wooden pole installation structure according to any one of claims 1 to 7 , characterized in that the plurality of compressed wooden pieces are arranged in the circumferential direction between adjacent shape-invariant members in the gap in the circumferential direction of the wooden pole. The wooden pole installation structure according to claim 9 , wherein the plurality of shape-unchanging members are arranged at equal intervals in the circumferential direction of the wooden pole. 11. The wooden pole installation structure according to claim 1, further comprising a plate-shaped rigid body wrapped around the wooden pole so that at least a portion of the rigid body is positioned within the installation hole. The wooden pole installation structure according to claim 11 , characterized in that the plate-shaped rigid body is wrapped around the wooden pole so that at least a portion of the rigid body faces the compressed wood. A first pouring step of pouring a first foundation concrete on a reference surface in a state in which an insertion hole opening upward is present;
a rigid member installation step of inserting a lower portion of the rigid member into the insertion hole so that an upper portion of the rigid member extends upward to form a rigid protrusion;
A second pouring step of pouring a second foundation concrete having an installation hole formed so that the rigid protrusion protrudes upward from a bottom surface of the second foundation concrete on the first foundation concrete;
a wooden pole erecting process for inserting a wooden pole, the wooden pole having at least a lower region located within the installation hole that is smaller in diameter than the installation hole and a base end surface that is provided with a recess into which a rigid protrusion of the rigid member that protrudes upward from the bottom surface of the installation hole is inserted, into the installation hole, and placing the base end surface of the wooden pole on the bottom surface of the installation hole while inserting the rigid protrusion into the recess, so that a gap exists around the entire circumference of the wooden pole between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole;
and a step of inserting a plurality of rigid elongated members into the gaps so that the rigid elongated members are arranged around a lower region of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole;
The plurality of elongated members include a plurality of plank-shaped compressed wood pieces each having a thickness direction as an expansion direction,
The long-length member installation process is characterized in that the multiple plate-shaped compressed wood pieces are arranged around the lower region of the wooden post with one and the other sides in the thickness direction of the multiple plate-shaped compressed wood pieces abutting the outer peripheral surface of the lower region of the wooden post and the inner peripheral surface of the installation hole, respectively. a form member installation process for installing a form member on a reference surface using a support member, the form member having a cylindrical side plate and a bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate, the bottom plate having a rigid protrusion protruding upward within a placement surface area surrounded by the cylindrical side plate;
a wooden pole erecting process for inserting a wooden pole, at least a lower region of which has a smaller diameter than the installation hole defined by the cylindrical side plates and a recess in a base end surface into which the rigid protrusion is engaged, into the installation hole, and placing the base end surface of the wooden pole on the bottom plate while engaging the rigid protrusion in the recess, so that a gap exists around the entire circumference of the wooden pole between an outer peripheral surface of the lower region of the wooden pole and an inner peripheral surface of the installation hole;
a step of inserting a plurality of rigid elongated members into the gap so that the rigid elongated members are arranged around a lower region of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole;
A pouring step of pouring foundation concrete onto a reference surface so as to cover an outer periphery of the cylindrical side plate at an arbitrary timing after the formwork member installation step,
The plurality of elongated members include a plurality of plank-shaped compressed wood pieces each having a thickness direction as an expansion direction,
The long member installation process is configured to arrange the plurality of plate-shaped compressed wood pieces around the lower region of the wooden pole with one side and the other side of the plate thickness direction of the plurality of plate-shaped compressed wood pieces abutting the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole , respectively;
the support member has a plurality of bolt members inserted into bolt through holes formed in the mounting surface area with a base end portion placed on a reference surface, and a plurality of nut members supporting the bottom plate in a state where the nut members are screwed into each of the plurality of bolt members, and the installation height of the bottom plate from the reference surface is changeable;
A wooden pole installation method characterized by including a bolt cutting process, after the formwork member installation process and before the wooden pole erection process, of cutting and removing portions of the plurality of bolt members that extend upward from the bottom plate . a form member installation process for installing a form member on a reference surface using a support member, the form member having a cylindrical side plate and a bottom plate connected to the cylindrical side plate so as to close a lower end opening of the cylindrical side plate, the bottom plate having a rigid protrusion protruding upward within a placement surface area surrounded by the cylindrical side plate;
A pouring step of pouring foundation concrete onto a reference surface so as to cover an outer periphery of the cylindrical side plate;
A side plate removing process in which the cylindrical side plate is removed to form an installation hole that opens upward in the foundation concrete;
a wooden pole erecting process for inserting a wooden pole, the wooden pole having a lower region located within the installation hole that is smaller in diameter than the installation hole and a recess in a base end surface into which the rigid protrusion is engaged, into the installation hole, and placing the base end surface of the wooden pole on the bottom plate while engaging the rigid protrusion in the recess, so that a gap exists between an outer peripheral surface of the lower region of the wooden pole and an inner peripheral surface of the installation hole over the entire circumference of the wooden pole, and erecting the wooden pole on the bottom plate within the installation hole;
and a step of inserting a plurality of rigid elongated members into the gaps so that the rigid elongated members are arranged around a lower region of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole;
The plurality of elongated members include a plurality of plank-shaped compressed wood pieces each having a thickness direction as an expansion direction,
The long-length member installation process is characterized in that the multiple plate-shaped compressed wood pieces are arranged around the lower region of the wooden post with one and the other sides in the thickness direction of the multiple plate-shaped compressed wood pieces abutting the outer peripheral surface of the lower region of the wooden post and the inner peripheral surface of the installation hole, respectively. the support member has a plurality of bolt members inserted into bolt through holes formed in the bottom plate with a base end placed on a reference surface, and a plurality of nut members supporting the bottom plate in a state where the nut members are screwed into each of the plurality of bolt members, and the installation height of the bottom plate from the reference surface is changeable;
The bottom plate has an extension surface area extending outward in a radial direction from the placement surface area relative to the wooden pole,
The wooden pole installation method according to claim 15 , characterized in that the bolt through-holes are formed in the extension surface area, and the plurality of bolt members pass through the extension surface area in the vertical direction. the support member has a plurality of bolt members inserted into bolt through holes formed in the mounting surface area with a base end portion placed on a reference surface, and a plurality of nut members supporting the bottom plate in a state where the nut members are screwed into each of the plurality of bolt members, and the installation height of the bottom plate from the reference surface is changeable;
The wooden pole installation method according to claim 15, further comprising a bolt cutting process for cutting and removing portions of the plurality of bolt members that extend upward from the bottom plate after the formwork member installation process and before the wooden pole erection process. a support plate installation step of installing a support plate, to which a rigid member is fixed so that at least a portion of the support plate extends upward, on a reference surface using a support member;
A first pouring step of pouring a first base concrete onto a reference surface so as to cover the support plate and cause an upper portion of the rigid member to protrude upward to form a rigid protrusion;
A second pouring step of pouring a second foundation concrete having an installation hole formed so that the rigid protrusion protrudes upward from a bottom surface of the second foundation concrete on the first foundation concrete;
a wooden pole installation process in which a wooden pole having at least a lower region with a smaller diameter than the installation hole and a recess in a base end surface into which the rigid protrusion is engaged is inserted into the installation hole, and the base end surface of the wooden pole is placed on the bottom surface while the rigid protrusion is engaged into the recess, so that a gap exists between the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole over the entire circumference of the wooden pole;
and a step of inserting a plurality of rigid elongated members into the gaps so that the rigid elongated members are arranged around a lower region of the wooden pole with their longitudinal direction aligned with the longitudinal direction of the wooden pole;
The plurality of elongated members include a plurality of plank-shaped compressed wood pieces each having a thickness direction as an expansion direction,
The long-length member installation process is characterized in that the multiple plate-shaped compressed wood pieces are arranged around the lower region of the wooden post with one and the other sides in the thickness direction of the multiple plate-shaped compressed wood pieces abutting the outer peripheral surface of the lower region of the wooden post and the inner peripheral surface of the installation hole, respectively. The plurality of elongated members includes, in addition to the plurality of planar compressed wood pieces, a plurality of shape-invariant members whose outer dimensions are invariable,
The long member installation process includes a shape-invariant member installation process for installing the plurality of shape-invariant members, and a compressed wood installation process for installing the plurality of planar compressed wood pieces after the shape-invariant member installation process,
The installation process of the outer shape invariant members is configured to install the plurality of outer shape invariant members at a distance from each other in the circumferential direction of the wooden pole, with the inner and outer sides of the plurality of outer shape invariant members in the radial direction based on the wooden pole being in contact with the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively;
The compressed wood installation process is configured to arrange multiple pieces of compressed wood around the wooden pole in the area between adjacent shape-unchanging members in the circumferential direction of the gap, with one and the other sides in the thickness direction of the plate-shaped compressed wood abutting the outer peripheral surface of the lower region of the wooden pole and the inner peripheral surface of the installation hole, respectively. A wooden pole installation method as described in any one of claims 13 to 18 . 20. The wooden pole installation method according to claim 13 , further comprising a moisture impregnation step of impregnating the plurality of plate-shaped compressed wood pieces with moisture after the long member installation step.