JP4704863B2 - Column base joint structure of wooden column and its column base joint tool - Google Patents

Description

  The present invention relates to a technique for joining column bases of a wooden column for erecting a wooden column material with respect to foundation concrete, and to improve workability by improving the yield strength and construction accuracy of the joint. Regarding technology.

As a column base jointing technique for wooden pillars that erect wooden pillars against foundation concrete, the joining plate is inverted T-shaped to the base rate that is fixed to the foundation concrete via anchor materials such as anchor bolts. The joint plate is inserted into the insertion hole formed in the joint plate from the side of the wooden pillar, and the joint plate is inserted from the lower edge of the lower end of the target wooden pillar. By joining, both the members are joined together, and a bolt is erected on the base plate, and the joining pipe material that is screwed to the bolt is inserted into the pipe insertion hole formed on the lower edge of the wooden column. In addition, a joining technique of joining both members by penetrating a pin through an insertion hole formed in the joining pipe material from the side of the wooden pillar has been conventionally known (see Patent Document 1). . However, in the case of these conventional technologies, the joining plate and the joining pipe material are formed in the joining plate and joining pipe material in a state of being inserted into the insertion portion formed on the lower end facet of the wooden column. Since a technique of joining the insertion hole by penetrating the pin from the side of the wooden column is employed, the work of penetrating the pin takes time and there is a problem in workability. In addition, due to the clearance formed between the joining plate or the joining pipe material and the insertion portion formed on the lower end facet of the wooden column, there is a problem that the yield strength and the construction accuracy of the joined portion are lowered.
JP-A-10-306513

  The present invention was developed in view of the above-described conventional technical situation, and when standing a wooden pillar material with respect to the foundation concrete, the workability can be improved from a simple configuration. An object of the present invention is to provide a technique for joining a column base of a wooden column, which can improve the yield strength and the construction accuracy of the joint.

In the present invention, for solving the problems, inserted into the base plate being fixed to the foundation concrete, while forming a clearance for the adhesive to ambient for the insertion hole formed in the lower end small surface of wood pillar A connecting shaft portion having an outer shape smaller than the possible insertion hole is erected, and the insertion hole and the connecting shaft portion formed on the lower end face of the wooden column are concentrically positioned on the upper surface of the base plate. A positioning projection that is inserted into the insertion hole formed in the lower end edge of the wooden column, and the projection is formed in an engagement recess formed in the lower edge of the wooden column. in the state in which the fitted position, the base plate fixed to the lower end small surface of wood pillars by bonding and the insertion hole and the joining shaft portion, basic co wood pillar through the base plate Adopted the technology means that standing on the cleat. As for the method of bonding the insertion hole formed in the lower end facet of the wooden pillar and the joining shaft portion, an adhesive is injected into the insertion hole in advance, and the joining shaft portion is inserted before solidification. After the insertion shaft portion is inserted into the insertion hole, the adhesive is supplied from the side of the wooden pillar and then bonded through the injection hole communicating with the gap portion afterwards. A method is possible.

According to the present invention, the following effects can be obtained.
(1) An insertion hole formed in the lower end facet of the wooden column and a joining shaft inserted in the insertion hole by fitting between the protrusion provided on the base plate and the engagement recess formed in the lower end facet of the wooden column The joints are positioned concentrically and the clearance between them is accurately maintained, so that the bonding is accurately performed on the entire peripheral surface of the joint shaft, and the yield strength of the joint is greatly and stably improved. The
(2) By positioning the protrusion provided on the upper surface of the base plate and the engaging recess formed on the lower end edge of the wooden column, positioning can be performed on the joint surface between the base plate and the lower end edge of the wooden column. Since the structure that is configured to be performed and positioned by engagement between the protrusion and the lower outer surface of the wooden column is not employed, the shape of the protrusion is the outer shape of the lower portion of the wooden column, that is, the lower end of the wooden column it is not necessary to match the cross-sectional shape of the small section, since it is not constrained to the lower portion of the outer shape of the wood pillars, Ru der allow wider convenient application.
(3) the projection and positioned by engagement of the engagement recess is performed accurately, since the insertion hole formed in the lower end small surface of the wooden pillar and joining the shaft portion is concentrically supported, In the standing work of the wooden pillar, the shaft portion for standing standing on the base plate is formed on the lower end face of the wooden pillar while positioning so that the protrusions and the engaging recesses are fitted. simply by inserting into the insertion hole has, since desired clearance around Oite said joining shaft portion to a predetermined upright position is formed, it is possible to bond easily and accurately, workability Greatly improved. Incidentally, even in the case of a form in which the adhesive is injected afterwards, the position of the wooden pillar is in an accurately maintained state, and therefore, a simple and accurate adhesive supply operation is possible.

  The column base part joining technique of the wooden pillar according to the present invention can be widely applied when the wooden pillar material is erected with respect to the foundation concrete. As a wooden pillar, if it is a form using a wooden pillar material, such as a thing using a natural wood or a laminated material obtained by laminating and bonding a plurality of plates, it can be widely applied. . Further, the present invention can be applied without being limited to the cross-sectional shape of the wooden pillar. The bee plate may be composed of a single flat plate, or may be composed of two flat plates as shown in the following examples, and the shape is not limited to a rectangular shape, and may be a circular shape. There is no particular limitation. Furthermore, one bae plate may be divided into a plurality of flat plate portions, and the flat plate portions may be arranged in a plane so that one wood pillar is erected, or conversely, one base plate is A plurality of wooden pillars may be erected on one base plate by dividing into a plurality of areas, and fixing the lower end edge surface to the respective areas and erecting the wooden pillars. An insertion hole is formed at an appropriate position on the periphery of the base plate, and an upper exposed portion in which an appropriate anchor material made of round bar steel, deformed reinforcing bar, all screw bolts, etc. fixed to the foundation concrete protrudes upward from the foundation concrete. The base plate is fixed to the foundation concrete by being inserted into the insertion hole and fastened and fixed with a nut. Furthermore, the form fixed to the predetermined position of foundation concrete in the state which welded the suitable anchor material beforehand to the back surface of the baseplate is also possible. In this connection, the base plate is fixed to the lower edge of the wooden column in advance at a factory, etc., and then fixed to the upper exposed portion of the anchor material fixed on the foundation concrete side via the base plate at the site. The base plate may be fixed to the upper exposed portion of the anchor material previously fixed on the foundation concrete side, and the wooden pillar may be erected on the base plate.

  The number of the connecting shaft portions standing on the upper surface of the base plate may be one or plural, and the installation position is also free. As the joining shaft portion, for example, a deformed rebar such as a bamboo knot or a screw knot or a round bar steel may be welded. The cross-sectional shape is not limited to a circle, but may be an ellipse or a rectangle. Furthermore, the surface state of the outer peripheral surface of the joining shaft portion is better when the surface is uneven as in the deformed reinforcing bar, but the surface may have a smooth surface without unevenness. The protrusions provided on the upper surface of the base plate may have a form that performs a positioning function by combining a plurality of protrusions, or may have a form that performs a positioning function by a single rectangular protrusion, for example. . In addition, their shape, size and installation position are also free. Regarding the method of bonding between the insertion hole and the joining shaft, as described above, injecting an adhesive into the insertion hole in advance, inserting the joining shaft before solidifying, and bonding them together, After inserting the joining shaft portion into the insertion hole, a method of adhering by supplying an adhesive from the side of the wooden pillar through an injection hole communicating with the gap portion afterwards is possible. As the adhesive, a non-shrinkable adhesive using an epoxy resin or the like is appropriate. Incidentally, the fitting portion between the protrusion and the engagement recess may not be bonded or may be bonded.

  1 and 2 show a first embodiment according to the present invention. FIG. 1 is a perspective view showing a base plate side, and FIG. 2 is a perspective view showing a wooden pillar side. In the figure, reference numeral 1 denotes a base plate, which is fixed to the foundation concrete by inserting the upper exposed portion of the anchor material fixed to the foundation concrete (not shown) into the insertion holes 2 formed at the four corners and fastening and fixing with the nut. It is configured as follows. The width Wa of each side of the base plate 1 is set to be larger than the width Wb of each side of the wooden column 3, and is configured such that a sufficient tightening space for the anchor material inserted into the insertion hole 2 is provided outside the wooden column 3. ing. On the upper surface of the base plate 1, a joining shaft portion 5 made of a deformed reinforcing bar or the like that can be inserted into an insertion hole 4 formed in the lower end facet of the wooden column 3 is erected by welding or the like. The insertion hole 4 is formed larger than the joining shaft portion 5, and a clearance for the adhesive is formed between them. Furthermore, in this embodiment, flat projections 6 are arranged in a cross shape around the joining shaft portion 5 of the base plate 1, and the lower end facet of the wooden pillar 3 corresponds to the projections 6. The engaging recess 7 is formed in a cross shape around the insertion hole 4. In this case, if the flat projection 6 is made of a steel plate and is welded to the upper surface of the base plate 1, a reinforcing action as a rib by the projection 6 can be obtained, and the thickness of the base plate 1 can be increased. Thinning is also possible. Furthermore, in the column base part, since the said protrusion 6 plays the function resisting with respect to the shearing force which arises in the lower end facet of a wooden pillar, it is also possible to suppress the cross section of the axial part 5 for joining small. Incidentally, if the cross section of the protrusion and the engaging recess 7 is formed in a tapered shape whose upper part is narrow, the tapered surface exhibits a guiding function when fitted.

  Thus, in order to erect the wooden pillar 3 at a predetermined position of the foundation concrete, the base plate 1 may be fixed in advance to the lower end edge of the wooden pillar 3 in a factory or the like prior to the standing work on site. Good. In the fixing operation of the base plate 1, first, while inserting the joining shaft portion 5 erected on the upper surface of the base plate 1 into the insertion hole 4 formed in the lower end facet of the wooden column 3, the protrusion 6 is simultaneously made of wood Positioning is performed by fitting into an engaging recess 7 formed in the lower end facet of the column 3. As described above, the insertion hole 4 and the joining shaft portion 5 inserted into the insertion hole 4 are supported concentrically by the positioning of the protrusion 6 and the engagement recess 7 by fitting, and between them, The desired clearance is accurately maintained. Thereafter, an appropriate adhesive such as an adhesive using an epoxy resin is inserted through the injection hole formed in the wooden pillar 3 so as to communicate with the gap between the insertion hole 4 and the joining shaft portion 5. By press-fitting, the adhesive is accurately supplied to the entire peripheral surface of the joining shaft portion 5, and both can be securely and firmly bonded. Moreover, it replaces with the above operation procedure, the said adhesive agent is beforehand inject | poured into the insertion hole 4 formed in the lower end small edge surface of the wooden pillar 3, and the base plate 1 is inserted with respect to the insertion hole 4 into which the adhesive agent was inject | poured. There is also a method of joining the two by inserting the shaft portion for joining 5 erected on the upper surface of the wood and positioning the projection 6 by fitting it into the engagement recess 7 formed on the lower end edge of the wooden column 3. Is possible. Also in this case, the insertion hole 4 and the joining shaft portion 5 inserted into the insertion hole 4 are supported concentrically by the fitting of the protrusion 6 and the engagement recess 7 as described above. Since the clearance between them is accurately maintained, accurate bonding on the entire peripheral surface of the joining shaft portion 5 is possible. The wooden pillar 3 to which the base plate 1 is fixed in this way is transported to the site, and the upper exposed portion of the anchor material fixed to the foundation concrete is inserted into the insertion holes 2 formed at the four corners of the base plate 1 in this embodiment. Then, by tightening and fixing with a nut, the base concrete is erected sequentially at a predetermined position. By the way, by making the insertion hole 2 provided in the base plate 1 an excessive hole with a predetermined clearance, it is possible to sufficiently absorb the construction error assumed from the construction accuracy of the anchor material fixed on the foundation concrete side. Smoother construction work is possible. The clearance generated in the insertion hole 2 is appropriately sealed with a filler after building.

  3 and 4 show a second embodiment according to the present invention. FIG. 3 is a front view showing the base plate side, and FIG. 4 is a front view showing the wooden pillar side. As shown in the figure, in the base plate 8 according to this embodiment, four joining shaft portions 9 are erected on the upper surface, and a total of four plate-like protrusions 10 are radially arranged at the center of each side. Showed the case. Correspondingly, four insertion holes 12 and four engagement recesses 13 are formed on the lower end facet of the wooden pillar 11. And the penetration hole which penetrates the upper exposed part of the anchor material fixed to the base concrete side similarly to the said Example 1 is formed in the four corners of the base plate 8, and it is a wooden pillar by the construction method similar to Example 1. 11 can be erected at a predetermined position of the foundation concrete.

  FIG. 5 is a perspective view showing Example 3 according to the present invention. As shown in the drawing, the third embodiment is characterized in that the base plate 14 is configured in two stages using two flat plates 14a and 14b. A flat plate-like support piece 15 arranged in a cross shape is fixed to the upper surface of the lower flat plate 14a, and the upper flat plate 14b is supported through the support pieces 15 with a space between the lower flat plate 14a. Has been. A protrusion is disposed on the upper surface of the upper flat plate 14b as in the above embodiment. For example, an intermediate portion of each support piece 15 penetrates the upper flat plate 14b and protrudes upward to form a protrusion 16. It can also function. Further, a joining shaft portion 17 is erected on the upper surface of the upper flat plate 14b. Further, insertion holes 18 are formed at the four corners of the lower flat plate 14a, and the upper exposed portions of the anchor material fixed on the foundation concrete side are inserted through these insertion holes 18 so as to be fastened and fixed by nuts. It is configured. In this case, in the case of the present embodiment, as shown in the figure, the insertion hole 18 can be formed inside the outer portion of the upper flat plate 14b to which the wooden pillar is joined. It is also possible to make the outer surfaces coincide with each other without the outer portion protruding beyond the outer portion of the wooden pillar. Incidentally, the tightening operation of the nut screwed into the upper exposed portion of the anchor material is performed using the space between the lower flat plate 14a and the upper flat plate 14b.

  FIG. 6 is a perspective view showing Example 4 according to the present invention. As shown in the figure, in the case of the fourth embodiment, a flat plate shape that can be fitted into an engagement recess 23 formed in the base 22 by increasing the height of one of the protrusions 21 erected on the upper surface of the base plate 19. The connection piece 24 and the base 22 can be supported at the same time. As shown in the figure, the connecting piece 24 is configured so that it can be simultaneously fitted into the engaging recess 26 on the wooden pillar 25 side and the engaging recess 23 formed on the base 22 side. Further, the connecting piece 24 is provided with an insertion hole, and is configured to connect the base 22 to the base plate 19 by penetrating the pin 27 from the side surface of the base 22. It should be noted that the installation position of the connecting plate 24 can be changed or the number of installations can be increased or decreased according to the installation state of the base 22. Incidentally, when the base plate 19 is placed on the upper surface of the foundation concrete, a gap corresponding to the thickness of the base plate 19 is formed between the lower surface of the foundation 22 and the upper surface of the foundation concrete. A spacer may be interposed on the lower surface of the base plate, or a notch corresponding to the thickness of the base plate 19 may be formed on the lower surface of the end portion of the base 22, and the base plate 19 is installed so that the upper surface thereof coincides with the upper surface of the foundation concrete. By doing so, it is also possible to install so that the lower surface of the base 22 contacts the upper surface of the foundation concrete.

  FIG. 7 is a perspective view showing Example 5 according to the present invention. As shown in the figure, the fifth embodiment is a modification of the fourth embodiment, and includes a connecting piece 28 that extends together with the protrusion 21 to the connecting shaft portion 20 erected on the center portion of the base plate 19 together with the connecting piece 24. Adopting the pin 29 through the insertion hole formed in the extension part of the connecting piece 28 from the side of the wooden pillar 25, thereby strengthening the coupling strength of the base plate 19, the wooden pillar 25 and the base 22. It is intended.

  FIG. 8 is a perspective view showing Example 6 according to the present invention. As shown in the figure, the base plate 30 according to the present embodiment is characterized in that an attachment piece 32 for attaching the brace 31 is provided on the base plate 30 in place of the connecting piece 24 for the base 22 in the fourth embodiment. Have When attaching the brace 31, the engaging recess formed at the end of the brace 31 is fitted into the attachment piece 32, and the pin 33 is passed through the insertion hole formed in the attachment piece 32 from the side. Can be easily attached. That is, in the case of the present embodiment, the base plate 30 is used for both standing the wooden pillar 25 and attaching the brace 31. In the present embodiment, the mounting piece 32 is configured not to be coupled to the wooden pillar 25 side. However, as in the fifth embodiment, the mounting piece 32 is further extended to the joining shaft portion 20 side and coupled to the wooden pillar 25 by a pin. You may comprise.

It is the perspective view which showed the baseplate side of Example 1 which concerns on this invention. It is the perspective view which showed the wooden pillar side of the Example 1. FIG. It is the front view which showed the baseplate side of Example 2 which concerns on this invention. It is the front view which showed the wooden pillar side of the Example 2. FIG. It is the perspective view which showed Example 3 which concerns on this invention. It is the perspective view which showed Example 4 which concerns on this invention. It is the perspective view which showed Example 5 which concerns on this invention. It is the perspective view which showed Example 6 which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base plate, 2 ... Insertion hole, 3 ... Wooden pillar, 4 ... Insertion hole, 5 ... Joining shaft part, 6 ... Projection part, 7 ... Engagement recessed part, 8 ... Base plate, 9 ... Joining shaft part, 10 ... Projection, 11 ... wood pillar, 12 ... insertion hole, 13 ... engagement recess, 14 ... base plate, 14a, 14b ... flat plate, 15 ... support piece, 16 ... projection, 17 ... joining shaft, 18 ... insertion hole , 19 ... Base plate, 20 ... Joining shaft, 21 ... Projection, 22 ... Base, 23 ... Engagement recess, 24 ... Connection piece, 25 ... Wood pillar, 26 ... Engagement recess, 27 ... Pin, 28 ... Connection Piece, 29 ... pin, 30 ... base plate, 31 ... intersection, 32 ... mounting piece, 33 ... pin

Claims (3)

The base plate being fixed to the foundation concrete, for small junctions profile than can be inserted the insert hole in a state of forming a clearance for the adhesive to ambient for the insertion hole formed in the lower end small surface of wood pillar The shaft portion is erected, and a positioning projection is provided on the upper surface of the base plate for concentrically positioning the insertion hole formed in the lower end facet of the wooden column and the shaft portion for joining, In a state where the shaft portion is inserted into the insertion hole formed in the lower end facet of the wooden column, and the protrusion is fitted and positioned in the engagement recess formed in the lower end facet of the wooden column, The base plate is fixed to the lower edge of the wooden column by bonding the joining shaft portion and the insertion hole, and the wooden column is erected on the foundation concrete via the base plate. Column base junction structure of quality posts.   An adhesive is injected in advance into an insertion hole formed in a lower end facet of the wooden pillar, and the joining shaft portion is inserted into the insertion hole before the adhesive is solidified to bond them together. The column base part joint structure of the wooden pillar of Claim 1. A base plate having a through hole of the anchor member to be fixed to the foundation concrete side, can be inserted the insert in a state of forming a clearance for the adhesive to ambient for the insertion hole formed in the lower end small surface of wood pillar A joining shaft portion having an outer shape smaller than the hole is erected, and an insertion hole formed on the lower end face of the wooden column and the joining shaft portion are positioned concentrically on the upper surface of the base plate . In the state where the protrusion is provided and the insertion hole and the connecting shaft portion are positioned concentrically by fitting the protrusion with an engagement recess formed on the lower end edge of the wooden column, the base plate A column base part joining tool for a wooden pillar, characterized in that the joining shaft part erected and an insertion hole formed in a lower end facet of the wooden pillar are bonded together.

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