JP7001271B2 - Pile, correction material - Google Patents

Description

The present invention relates mainly to piles driven into the ground to support rails laid horizontally and in a straight line at predetermined intervals.

For example, a construction method using a temporary tent when dismantling a structure is known. The temporary tent is provided with an aggregate that forms the framework thereof and a sheet that covers or is stretched between the aggregates.
Temporary tents are very helpful in preventing the noise of dismantling structures and the leakage of harmful substances into the external environment. Related laws and regulations regarding the prevention of noise and the scattering of harmful substances are becoming stricter year by year, and the temporary tents used for construction are used not only for dismantling structures but also for building structures. It is diversifying.
Temporary tents, as the name implies, are temporarily built when needed and removed when no longer needed. It takes more time to build a temporary tent than to remove it. Of course, the time spent constructing and removing the temporary tent also affects the construction period of the construction that is carried out using the temporary tent.
Nowadays, there are strict demands for costs that fluctuate depending on the construction period or its length, and how quickly and cheaply a temporary tent can be constructed and removed has become a major issue.

By the way, a foundation is required to build a temporary tent. Despite the name of the tent, the temporary tent is huge, and when it is large, it has a side and height of nearly 100 m or more. However, temporary tents are light for their size and must be prevented from moving by the wind. From such a meaning, the foundation that plays the role of fixing the temporary tent to the ground surface is important.
Traditional common foundations are made by placing concrete in the field and hardening it. However, the foundation made in this way needs to be removed together with the temporary tent when it is removed, and its handling has become an issue.

In response, the applicant proposes to use a metal rail as a base by laying it on site. The metal rails are arranged in a straight line and horizontally, and the two rails are paired with each other so as to be parallel to each other with the construction area in between. Temporary tents are equipped with aggregates, including columns erected on a pair of rails, and are constructed to straddle the area where construction is to be carried out. The applicant also proposes to move the temporary tent or a part thereof on the metal rail.
For example, the construction period can be shortened by moving the temporary tent or a part thereof assembled outside the construction zone or one end side of the rail on the rail. By moving the temporary tent, it is possible to assemble or move the temporary tent or a part thereof and perform other work for construction in parallel.

However, it is quite difficult to arrange the two rails horizontally, in a straight line, and parallel to each other as planned. When focusing on one rail, the rail is fixed at a predetermined position in the length direction with respect to the piles driven in a straight line at predetermined intervals when viewed in a plan view.
In this case, it is difficult to hit the stake exactly on a straight line, so the stake may deviate from the planned straight line. The horizontal deviation of such piles (the length deviation of the straight line does not cause a big problem, but the width deviation of the straight line causes a problem) causes or shifts the horizontal deviation of the rail. It causes a situation where the pile cannot be fixed to the rail. On the other hand, when a large number of rails are driven into the ground, it is difficult to align the length of each pile protruding from the ground surface to the planned height, so the height above the portion protruding from the ground surface of each pile. May cause vertical deviation. The vertical deviation of the pile causes a vertical deviation of the rail, or a state in which the displaced pile cannot be fixed to the rail occurs. Although it is possible to prevent the above-mentioned horizontal and vertical deviations from occurring by precisely striking the piles, it is not possible to precisely perform large-scale pile driving work using heavy machinery. It takes time and is not appropriate in terms of shortening the construction period.

In some cases, there are two pairs of rails provided across the area where construction is to be carried out. The reason why both of the pair of rails are two each is that if both of the pair of rails are one rail, the cross-sectional area of the column that can be supported by one rail is determined to some extent by the width of the rail. This is because the restrictions are strict, but if two rails arranged in close proximity are used, a thicker column can be supported by the two rails.
Even in such a case, if an attempt is made to support the four rails on a straight line using piles, the same problem as in the above case arises. This is because many piles can have vertical and horizontal deviations.
For that matter, such problems based on horizontal and vertical displacement of piles arise even if the rails are not for temporary tents.

An object of the present invention is to provide a pile for fixing a rail horizontally and linearly, and an applied technique thereof.

In order to solve such a problem, the inventor of the present application proposes the following inventions.
The present invention is a pile driven into the ground surface to support rails laid horizontally and linearly at predetermined intervals.
The pile is configured to be able to be fixed to a pile main body, which is a ready-made pile to be driven into the ground surface, and to the upper end of the pile main body in a state of being positioned at an arbitrary position in the length direction of the pile main body. , A plane on which the rail, which protrudes in all directions from the pile body when viewed in a plan view and is perpendicular to the length direction of the pile body while being fixed to the pile body, is attached to the upper end thereof. It is equipped with a correction material, which is equipped with a mounting portion having a mounting portion.
Such a pile is configured to include a pile body which is a ready-made pile and a correction material. The pile body may be a ready-made pile. For example, the pile body is a known or well-known steel pipe pile.
On the other hand, the pile of the present invention is provided with a correction material. One compensator is used in combination for one pile body. Due to the presence of the compensator, when the pile body is driven into the ground, even if at least one of the horizontal deviation and the vertical deviation occurs, the deviation is absorbed. The theory is as follows.
The compensator is configured to be able to be fixed to the upper end of the pile body in a state of being positioned at an arbitrary position in the length direction of the pile body. In addition, a rail that protrudes from the pile body in all directions when viewed in a plan view and is fixed to the pile body and is perpendicular to the length direction of the pile body is attached to the upper end of the correction material. It has a mounting part with a flat surface.
First, the correction material can be attached to the upper end of the pile body at an arbitrary position in the length direction of the pile body. At the upper end of the compensator, there is a mounting portion having a horizontal plane on which the rail is mounted, but by appropriately positioning the position of the compensator in the vertical direction, the height of the mounting portion or the horizontal plane it has can be obtained. The position can be arbitrarily positioned. Thereby, at this time, for example, by adjusting the distance from the upper end of the pile body to the horizontal plane above the mounting portion, the height position of the plane above the mounting portion in the correction material can be arbitrarily adjusted. be able to. Even if there is a slight deviation in the height of the upper end of each pile body, it is possible to make the height of the upper flat surface of the mounting part in each pile uniform by adjusting the above distance appropriately in each pile. Will be.
On the other hand, the horizontal displacement of the pile body is absorbed by the upper surface of the mounting portion having a spread outward from the cross section of the pile body. The plane on the upper side of the mounting portion may extend within the cross section of the pile body, that is, toward the inside of the pile body, as long as it extends outward from the cross section of the pile body when viewed in a plan view. Fixing of the rail to the stake, more specifically to the upper plane of the mounting part, may be done by any method as long as it is strong enough to prevent movement of the rail to the stake, for example by welding or screwing. It is possible to do.
Even if a correction material is not used, the vertical deviation of the pile body can be absorbed by cutting the upper side of many pile bodies driven into the ground surface, for example, according to the lowest one. However, the pile body is generally a leased product, and the pile body whose part is cut is treated as a defective product, so such measures are not appropriate. It is one of the advantages of the present invention that such a defect does not occur.
The rail may be directly fixed to the flat surface above the mounting portion, or may be indirectly mounted. For example, a predetermined member may be attached to the attachment portion, and the rail may be attached to the attachment portion via the predetermined member.

In the pile of the present invention, the mounting portion is a disk or a donut-shaped plate, and when the correction material is fixed to the pile body, the center of the mounting portion which is a disk or a donut-shaped plate is , May be located on the axis of the pile body. If the mounting portion is as described above, the shape of the plane on the upper side of the mounting portion is always the same regardless of the direction in which the correction material is rotated with respect to the pile body. In other words, when fixing the correction material to the pile body, the work can be performed without worrying about the relative mounting angle of the two (the angle around the axis of the pile body), which has the effect of shortening the work time. Can be obtained.
The pile of the present invention may be provided with a guided portion near the upper end of the pile body so that the correction material can be translated with respect to the pile body while being guided by the pile body. When such a guided portion exists, the plane above the mounting portion remains perpendicular to the axis of the pile body, in other words, the plane above the mounting portion remains horizontal with respect to the pile body. Since the correction material can be moved in parallel, the work of positioning the height position of the correction material with respect to the pile body can be easily performed. This also has the effect of shortening the working time.
The details of the configuration of the guided portion are not limited as long as the correction material can be moved in parallel with the pile body while being guided by the pile body near the upper end of the pile body.
In many cases, the pile body has a cylindrical shape. In such a case, the guided portion corresponds to the outer surface of the pile body and is guided to the outer surface of the pile body, or corresponds to the inner surface of the pile body and is guided to the inner surface of the pile body. It may have a cylindrical shape having an outer surface to be formed.

The correction material and the pile body may be made of a material that can be welded to each other, and the correction material may be fixed to the pile body by welding. For example, the above-mentioned cylindrical guided portion may be made of a material that can be welded to the pile body, and the guided portion may be welded and fixed to the pile body.
As mentioned above, in many cases, the pile body has a cylindrical shape. In that case, the mounting portion of the compensator is a donut-shaped plate, and when the compensator is fixed to the pile body, the center of the mounting portion, which is the donut-shaped plate, is the pile body. The guided portion in the correction material corresponds to the outer surface of the pile body and is guided to the outer surface of the pile body, or the inner surface of the pile body. It may be a cylindrical shape having an outer surface guided to the inner surface of the pile body. In this case, the cylindrical guided portion is spirally cut with a groove penetrating the inner and outer surfaces thereof in an appropriate range in the vertical direction, and the pile body is near the upper end of the pile body. The upper end of the pile body is covered with the guided portion while guiding the inner surface of the guided portion to the outer surface of the pile body, or the guided portion is guided while guiding the outer surface of the guided portion to the inner surface of the pile body. When the portion is inserted, the guided portion can be aligned with the groove provided in the guided portion at an arbitrary height position of the pile body by rotating the guided portion with respect to the pile body. A hole may be drilled at a possible position. In this case, a nut is screwed into a bolt that penetrates the hole of the pile body and the groove of the guided portion together, and the pile body and the mounting are provided between the head of the bolt and the nut. The correction material may be fixed to the pile body by sandwiching the portion. This is an example in which the correction material can be detachably fixed to the pile body with bolts and nuts. By making it possible to attach and detach both of them in this way, the pile body and the correction material can be reused.

The inventor of the present application also proposes the above-mentioned correction material as one aspect of the present invention. The effect of the compensator is equal to the effect of the pile described above.
The correction material as an example in the present invention is as follows.
The compensator is a compensator composed of a pile driven into the ground surface to support a rail laid horizontally and in a straight line at predetermined intervals in combination with a pile body which is a ready-made pile driven into the ground surface. Is.
The compensating material is configured to be fixed to the upper end of the pile body in a state of being positioned at an arbitrary position in the length direction of the pile body, and at least from the pile body when viewed in a plan view at the upper end thereof. It is provided with a mounting portion having a flat surface on which the rail, which protrudes in all directions and is perpendicular to the length direction of the pile body while being fixed to the pile body, is mounted.

The inventor of the present application also proposes a rail structure including a pile and a rail using any of the above-mentioned piles as one aspect of the present invention. The effect is roughly equal to the effect of the pile described above.
An example rail structure is a rail laid horizontally and on a straight line, a pile body which is a ready-made pile driven into the ground surface at predetermined intervals so as to ride on a straight line parallel to the straight line, and the pile body. Each upper end is configured to be able to be fixed in a state of being positioned at an arbitrary position in the length direction of the pile body, and the upper end of the pile body protrudes from the pile body in all directions when viewed in a plan view. It comprises a plurality of compensators having a mounting portion having a flat surface to which the rail, which is fixed to the pile body and is perpendicular to the length direction of the pile body, is mounted.
Then, by appropriately positioning the correction material fixed to the pile body in the length direction with respect to the pile body, the height of the plane of the mounting portion in all the piles riding on the straight line parallel to the straight line is obtained. The rails are mounted on the flat surface of the mounting portion.
It should be noted that the pile body in such a rail structure is "dried into the ground surface at predetermined intervals so as to ride on a straight line parallel to the straight line", but in the present application, such a sentence is "trial" as such. It means "to be done". As mentioned above, it is almost impossible to drive the piles exactly as planned at the construction site in the horizontal direction. In addition, it is almost impossible to make the length of each pile protruding from the ground surface completely as planned as already explained, and although there is no description to that effect in the above sentence, it is practically the case. You should think about it.
According to such a rail structure, the correction material contained in each pile absorbs the deviation between the horizontal direction and the vertical direction of the pile, so that the rail can be arranged horizontally on the planned straight line.
In the rail structure of the present invention, even if a predetermined member is attached to the attachment portion and the rail is attached to the attachment portion via the predetermined member. I do not care.
In the rail structure of the present invention, the pile rides on two straight lines parallel to the straight line, and rides on a plurality of straight lines at predetermined intervals orthogonal to the two straight lines and on the two straight lines. When two piles struck so as to ride on one of a plurality of straight lines at predetermined intervals orthogonal to the two straight lines are made into a set of piles. In addition, the vicinity of both ends of the straddle member having a plane whose upper surface is a horizontal plane is fixed to the mounting portion of the set of piles, and the rail is fixed to the upper surface of the straddle member. It may be fixed to the pile via the straddle member. By using the straddle material, it is possible to reliably arrange the rail horizontally on the planned straight line.
When a straddle member is used in the rail structure of the present invention, two rails parallel to the straight line may be fixed to the plane of the straddle member. Two adjacent rails are treated as a set of rails. In this case, one set of rails is made parallel to and at the same height as the other set of rails, and they function as a pair of rails.

A plan view including the surrounding area including a building that is an example of an old structure before being rebuilt in one embodiment. The perspective view of the target area and the building shown in FIG. A side view of the above-ground and underground portions of the building shown in FIG. 1 as viewed from the direction of arrow A in FIG. A plan view of the same area as in FIG. 1 after the old ground portion of the building shown in FIG. 1 has been demolished. A side view of the same area as in FIG. 3 after the old ground portion of the building shown in FIG. 1 has been demolished. Top view for the same range as in FIG. 1 after the foundation rails have been placed. A side view including a partial perspective view showing the structure of the pile to support the foundation rail. The perspective view of the correction material contained in the pile shown in FIG. The perspective view which shows the other example of the pile shown in FIG. FIG. 3 is a perspective view for explaining a method of constructing a temporary tent covering the target range shown in FIG. 1. FIG. 3 is a perspective view for explaining a method of constructing a temporary tent covering the target range shown in FIG. 1. FIG. 3 is a perspective view for explaining a method of constructing a temporary tent covering the target range shown in FIG. 1. FIG. 3 is a perspective view for explaining a method of constructing a temporary tent covering the target range shown in FIG. 1. FIG. 3 is an enlarged plan view showing the vicinity of the target range showing a state in which a cast-in-place pile is struck within a specific range of the target range shown in FIG. FIG. 1 is a side view seen from the direction of arrow A in FIG. 1 showing a process in which a cast-in-place pile is driven within a specific range of the target range shown in FIG. The side view which shows the same range as FIG. 15 which shows the process in the case of driving a cast-in-place pile in a specific range of the target range shown in FIG. The side view which shows the same range as FIG. 15 which shows the process in the case of driving a cast-in-place pile in a specific range of the target range shown in FIG. The side view which shows the same range as FIG. The side view seen from the direction of the arrow B in FIG. A side view showing the same range as that of FIG. 19 showing a state after the gantry is provided after the state shown in FIG. 19 is reached. A side view showing the same range as FIG. 19 showing a state after a bulldozer is carried in to form an underground space. The side view which shows the same range as FIG. 19 which shows the state in the middle of forming an underground space. The side view which shows the same range as FIG. 19 which shows the state after the underground space is completed. A side view showing the same range as FIG. 19, showing a process for driving cast-in-place piles in a place outside a specific range in the underground space after the underground space is completed. A side view showing the same range as FIG. 19, showing a state after the process for driving a cast-in-place pile in a place outside a specific range in an underground space is completed. The plan view which shows the same range as FIG. 14 which shows the state after the process for driving a cast-in-place pile to the place outside a specific range in an underground space is completed. A side view showing the same extent as in FIG. 19 to illustrate the process of building the underground part of a new building. A side view showing the same range as in FIG. 19, showing the state where the process of constructing the underground part of the new building is completed. A side view showing the same extent as in FIG. 19 to illustrate the process of constructing the above-ground part of a new building. A side view including a partial perspective view of a set of piles and what is attached to them, showing the foundation rails and other fixing methods of the piles. The plan view which shows the positional relationship between the foundation rail fixed by the method of FIG. 30, a pile, and an aggregate pillar.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

In this embodiment, a structure is built on a certain site, and an old structure having an underground structure is dismantled together with the structure, and a structure having an underground structure is provided on the site where the old structure existed. The case of building an object will be described.
Temporary tents are used in the process. The rail structure in the present invention is used as the basis of the temporary tent, and the pile in the present invention and the correction material in the present invention are used as a part of the rail structure. However, the application destination of the pile, the correction material, and the rail structure of the present invention is not limited to the foundation of the temporary tent.

1 to 3 show the old structure 10 to be dismantled. 1 is a plan view, FIG. 2 is a perspective view, and FIG. 3 is a side view from the direction indicated by an arrow A in FIG. 1 including the basement.
The old structure 10 is, in this embodiment, three buildings 11, 12, 13. Each of the old structures 10 includes an old above-ground portion 10A located above the ground and an old underground portion 10B located below the structure. The old above-ground part 10A is an above-ground part of a known or well-known building, and the old underground part 10B is an underground part of a well-known or well-known building. The old underground part 10B is typically a basement or an underground passage.
Buildings 11, 12, and 13 are built in a section surrounded by road 15 (Fig. 1). The shaded area marked with an X in the section is the area where a new structure, which will be described later, will be built, and corresponds to the scope of the present invention. A plurality of cast-in-place piles, which will be described later, will be struck in the entire area within this target range as needed. Although not limited to this, the target range X is, in this embodiment, a horizontally long rectangle that is long in the left-right direction in FIG. Although not limited to this, in this embodiment, the old structures 10 to be demolished for rebuilding are three buildings 11, 12, and 13, and one large-sized structure 10 will be described later on the site. A new structure will be built, which is the building of. This is to rebuild and construct a large building on an adjacent site where multiple small buildings were built, which corresponds to a rebuilding mode often seen in urban redevelopment.
As shown in FIG. 3, under the old underground portion 10B of the old structure 10, there is an old pile 10C which is a pile supporting the old structure 10. The old pile 10C may or may not be a cast-in-place pile. Generally, the taller or larger the pile of a building, the longer it is. Although not limited to this, in this embodiment, the old pile 10C of the largest building 11 is the longest, and the old pile 10C of the smallest building 13 is the shortest.

When rebuilding work, first, the old structure 10 is dismantled.
The dismantling of the old structure 10 is performed from the old ground portion 10A. The old ground portion 10A can be dismantled by the conventional method. When dismantling the old ground part 10A, the temporary tent described later is not used in many cases. Even if an attempt is made to build a temporary tent to dismantle the old ground portion 10A of the old structure 10, it is practically sufficient to secure sufficient space around the ground portion 10A of the old structure 10 to build a temporary tent. This is because it is almost impossible. The dismantling by the conventional construction method is, for example, providing a temporary scaffolding around the old ground portion 10A of the old structure 10 and dismantling by using the sprinkling method.
The rubble generated by dismantling the old ground portion 10A is carried out from the target range X. The rubble may be carried out by a known or well-known technique.
After that, the entire target range X is leveled. When the target range X is leveled, if there is a space in the old underground portion 10B, it is preferable to backfill the space. For example, the space in the old underground portion 10B can be backfilled with a floor slab, a recycled concrete crushed stone material generated by crushing the old above-ground portion 10A, or the like.
The state after leveling the target range X is shown in the plan view of FIG. 4 and the side view of FIG.

After that, the process for a while is carried out using a temporary tent.
The temporary tent in this embodiment is constructed as follows.
In this embodiment, in order to construct a temporary tent, a pair of foundation rails 110 are arranged so as to sandwich the target range X (FIG. 6). If it is possible, the foundation rail 110 may be arranged in parallel with the dismantling work of the old ground portion 10A before the dismantling of the old ground portion 10A of the old structure 10 is completed. ..
The two foundation rails 110 are both long and are arranged so as to be horizontal and parallel to each other. In this embodiment, the two foundation rails 110 are slightly longer than the length of the long side of the rectangular target range X, and both ends of the long side are slightly eclipsed slightly outside the long side of the target range X. It is arranged in a state where it sticks out.
The foundation rail 110 is for constructing a temporary tent on the foundation rail 110, and is a so-called foundation of the temporary tent. The lower end of the temporary tent will be fixed to the foundation rail 110. This will prevent the temporary tent from moving, for example, due to strong winds. The foundation rail 110 is provided with a weight that can obtain such an effect, and the material is made of metal due to circumstances such as gaining weight and demanding rigidity. At least a part of the temporary tent can be moved on the foundation rail 110 in the length direction of the foundation rail 110 as described later.
As long as the foundation rail 110 can be moved while guiding the temporary tent on it, known and well-known ones can be applied thereto. As the foundation rail 110, for example, a rail used as a railroad track can be used for this, or general H steel can be used for this.

By the way, the two foundation rails 110 are fixed to the upper side of a portion of a pile that is struck from the ground surface and whose upper end protrudes from the ground surface at a plurality of predetermined points in the length direction thereof. It should be noted that this pile is different from the cast-in-place pile described later. The reason why the foundation rail 110 should be fixed to such a pile is that the foundation rail 110 itself must first be prevented from moving with respect to the ground surface in order to prevent the temporary tent fixed to the foundation rail 110 from moving. Because there is. The foundation rail 110 is firmly fixed to the ground surface via the pile.
However, it is quite difficult to arrange the two foundation rails 110 horizontally and parallel to each other as planned. When focusing on one foundation rail 110, as described above, the foundation rail 110 is fixed at a predetermined position in the length direction with respect to the piles driven in a straight line at predetermined intervals when viewed in a plan view. Rail.
In this case, it is difficult to hit the stake exactly on a straight line, so the stake may deviate from the planned straight line. The horizontal deviation of the pile (the deviation in the length of the straight line does not cause a big problem, but the deviation in the width of the straight line causes a problem) causes the horizontal deviation of the foundation rail 110, or A situation occurs in which the displaced pile cannot be fixed to the foundation rail 110. On the other hand, when a large number of foundation rails 110 are driven into the ground, it is difficult to align the length of each pile protruding from the ground surface to the planned height, so the upper side of the portion protruding from the ground surface of each pile. Vertical deviations may occur in height. The vertical deviation of the pile causes a vertical deviation of the foundation rail 110, or a state in which the displaced pile cannot be fixed to the foundation rail 110 occurs. Although it is possible to prevent the above-mentioned horizontal and vertical deviations from occurring by precisely striking the piles, it is not possible to precisely perform large-scale pile driving work using heavy machinery. It takes time and is not appropriate in terms of shortening the construction period.
This problem is overcome in this embodiment as follows.

Also in this embodiment, the foundation rail 110 is fixed to the pile 120 as shown in FIG. The pile 120 in this embodiment is composed of a pile main body 121, which is a general ready-made pile, and a correction material 122 attached to the pile main body 121. The pile body 121 is a pile driven vertically downward from the ground surface, and is, for example, a cylindrical pile generally called a steel pipe pile. In the case of a steel pipe pile, the pile body 121 may be known or well known, and is made of a metal, for example, iron. In the case of a steel pipe pile, the pile body 121 is generally cylindrical. At the lower end of the pile body 121, an anchor body 121A extending in the lateral direction is attached to prevent the pile body 121 from coming out of the ground. The pile body 121 is driven into the ground using a known or well-known pile driver for ready-made piles.
As described above, a plurality of pile bodies 121 to be driven into the ground are driven into a straight line on which the foundation rail 110 is to be arranged. However, the horizontal position of the pile body 121 does not have to be so accurate, and some horizontal deviation is allowed. Further, each pile main body 121 is in a state where a part of the upper side thereof protrudes from the ground surface to some extent. However, the heights of the upper end portions of the pile main bodies 121 do not have to be so accurately aligned, and some vertical deviation is allowed.

A correction material 122 as shown in FIGS. 7 and 8 is attached to the upper end of each pile body 121. The compensating material 122 absorbs both the horizontal deviation and the vertical deviation generated in each pile main body 121. Due to the presence of the compensator 122, the foundation rail 110 is linear and horizontal with respect to each pile 120, even if at least one of the horizontal and vertical deviations is present in the pile body 121. It can be fixed while maintaining its sexuality. The correction material 122 can be arbitrarily positioned and fixed to the upper end of the pile body 121 at an appropriate position in the length direction of the pile body 121.
As shown in the perspective view of FIG. 8, the correction material 122 is composed of a tubular tubular portion 122A below the tubular portion 122A and a mounting portion 122B attached to the upper end of the tubular portion 122A. The compensator 122 is made of metal, for example, the same metal as the pile body 121. In this embodiment, the correction material 122 and the pile body 121 are weldable to each other and are made of a material capable of welding them.
The tubular portion 122A corresponds to an example of the guided portion in the present invention, and is for realizing translation of the correction material 122 with respect to the pile main body 121 along the axial direction of the pile main body 121. By guiding the tubular portion 122A to the vicinity of the upper end of the pile main body 121, such parallel movement is realized. If this is feasible, the shape of the tubular portion 122A does not necessarily have to be tubular, regardless of its name.
The tubular portion 122A in this embodiment has a cylindrical shape and has an inner shape corresponding to the outer shape of the pile main body 121. Generally, the cross-sectional shape of the pile body 121 in the direction perpendicular to the length direction is circular, so that the cross-sectional shape of the space inside the tubular portion 122A is circular. In the example described here, the inner diameter of the tubular portion 122A is substantially equal to the outer diameter of the pile main body 121. As a result, the tubular portion 122A can be attached in such a state that the inner surface thereof is aligned with the outer surface of the upper end of the pile main body 121 so as to cover the vicinity of the upper end of the pile main body 121. If this is possible, the outer shape of the tubular portion 122A does not matter, but the outer shape of the tubular portion 122A in this embodiment is also cylindrical.
The mounting portion 122B has a flat surface on its upper surface. The foundation rail 110 is fixed to such a plane. The mounting portion 122B may have any other portion as long as the upper surface is flat, but in this embodiment, the mounting portion 122B has a plate shape having the same thickness in all the portions. The mounting portion 122B extends outward from the central axis of the tubular portion 122A in all directions. The mounting portion 122B in this embodiment is not limited to this, but is perpendicular to the axis of the tubular portion 122B attached to the upper end of the tubular portion 122B, and has a donut shape when viewed in a plan view. It is said to be a board. The radial width of the donut-shaped mounting portion 122B is the same in all parts, but this is not the case. A hole communicating with the tubular portion 122A may be present at the center of the mounting portion 122B as shown in FIGS. 7 and 8, but the mounting portion 122B is formed into a disk shape to eliminate the hole. It is also possible. Further, it is possible to make the size of the hole different from the hole of the tubular portion 122A, such as making the size of the hole smaller than the size of the hole of the tubular portion 122A. That is, the flat surface on the mounting portion 122B needs to be in a state of protruding outward from the pile body 121, but is in a state of protruding inside the pile body 121B. May be.
As described above, the correction material 122 covers the upper end of the pile body 121 with the tubular portion 122A so that the inner surface thereof is aligned with the outer surface of the upper end of the pile body 121 so as to cover the upper end of the pile body 121. (Fig. 7 (A)). At this time, by adjusting the distance L from the upper end of the pile body 121 to the lower end of the tubular portion 122A, the height position of the upper surface of the mounting portion 122B in the correction material 122 can be arbitrarily adjusted. Even if there is a slight deviation in the height of the upper end of each pile 120, the height of the upper surface of the mounting portion 122B in each pile 120 can be adjusted by appropriately adjusting the above-mentioned distance L in each pile 120. It will be possible to align. The adjustable width of the height of the upper surface of the mounting portion 122B in each pile 120 is determined by the length of the tubular portion 122A. The length of the tubular portion 122A may be determined according to the required adjustment width. The correction material 122 may be fixed to the pile body 121 by any method as long as the fixing is strong enough not to cause the movement of the foundation rail 110, but it may be performed by welding, for example. It is possible.
On the other hand, the horizontal deviation of the pile body 121 is absorbed by the spread of the upper surface of the mounting portion 122B. In the figure shown in FIG. 7A, the foundation rail 110 whose cross section is perpendicular to the length direction is shown in a state of being slightly shifted to the left from the central axis of the pile body 121. Originally, if the pile body 121 is exactly on the planned straight line, the axis of the pile body 121 should penetrate the center of the foundation rail 110 in the width direction. However, when the pile body 121 is slightly deviated from the straight line, as shown in FIG. 7A, the center of the foundation rail 110 in the width direction is not a little relative to the axis of the pile body 121. Will be. However, even if there is a horizontal deviation from the originally planned position at the position of the pile body 121, there is some spread on the upper surface of the mounting portion 122B to which the foundation rail 110 is mounted, so that the foundation There is no problem in fixing the rail 110 to the pile 120. The horizontally adjustable width of the foundation rail 110 in each pile 120 is determined by the shape and size of the mounting portion 122B. The shape and size of the mounting portion 122B may be determined according to the required adjustment width. The fixing of the foundation rail 110 to the pile 120, more specifically to the upper surface of the mounting portion 122B, may be performed by any method as long as it is strong enough not to cause movement of the foundation rail 110 to the pile 120, but for example, welding. It is possible to do this with.
The foundation rail 110 may be directly fixed to the upper surface of the mounting portion 122B, but the mounting portion 122B in the compensating material 122 of each pile 120 has a predetermined member having a flat surface as a horizontal plane thereof. It is also possible to fix the foundation rail 110 to the plane above the predetermined member. In this way, the foundation rail 110 is fixed to the pile 120 via a predetermined member.

In the above example, the inner diameter of the cylinder portion 122A of the correction material 122 is substantially equal to the outer diameter of the pile body 121, whereby the cylinder portion 122A is relative to the outer surface of the upper end of the pile body 121. It was possible to attach the pile body 121 in a state of covering the vicinity of the upper end of the pile body 121 so as to be attached to the inner surface thereof (FIG. 7 (A)). Instead, by making the outer diameter of the cylinder portion 122A of the compensator 122 substantially equal to the inner diameter of the pile body 121, thereby making the cylinder portion 122A its outer surface with respect to the inner surface of the upper end of the pile body 121. It is also possible to attach the pile body 121 so as to be inserted in the vicinity of the upper end of the pile body 121 (FIG. 7 (B)). As described above, as long as the correction material 122 can be attached to the pile main body 121 by appropriately positioning the position in the vertical direction, the configuration of the tubular portion 122A is not particularly limited. Even in the case shown in FIG. 7B, the pile body 121 and the correction material 122 can be fixed by welding, for example.
FIG. 9 shows an example in which the correction material 122 and the pile body 121 are fixed by a method other than welding. When the correction material 122 and the pile body 121 are fixed to each other in a detachable manner by welding, the positional relationship between the correction material 122 and the pile body 121 fixed to each other cannot be corrected again. Therefore, when the pile body 121 and the correction material 122 are used at one site, it becomes difficult to reuse them at another site. On the other hand, when the correction material 122 and the pile body 121 are detachably fixed, when the foundation rail 110 is fixed to the pile 120, the correction material 122 and the pile body 121 are fixed at a certain site. After the use of the foundation rail 110 is finished, the pile main body 121 and the correction material 122 can be reused at another site by releasing the fixing between the pile main body 121 and the correction material 122. .. In this case, the foundation rail 110 and the correction material 122 should also be detachably fixed. As a method of detachably fixing the correction material 122 and the foundation rail 110, a method of detachably fixing the pile 120 and the foundation rail 110 with, for example, bolts and nuts is known or well known. good.
The example shown in FIG. 9 will be described. FIG. 9A is a perspective view showing the vicinity of the upper end portion of the pile body 121. Holes 121B are drilled at appropriate positions in the pile body 121. There is at least one hole 121B, and in this embodiment there are three. FIG. 9B is a diagram showing the correction material 122. The correction material 122 includes a tubular portion 122A and a mounting portion 122B, similar to those shown in FIG. The tubular portion 122A is provided with a spiral mounting groove 122A1 cut from the lower end to the upper end of the tubular portion 122A. The mounting groove 122A1 extends to the lower end of the tubular portion 122A. In the example shown in FIG. 9, by rotating the cylinder portion 122A while moving it up and down, the positions of the mounting groove 122A1 of the cylinder portion 122A and the hole 121B drilled in the pile body 121 are set with respect to the pile body 121. Therefore, it is possible to align the correction material 122 while setting the height to an arbitrary height. In that state, the three holes 121B and the mounting groove 122A1 overlapping the three holes 121B are pierced together by the bolt 123A from the inside or the outside of the tubular portion 122A, and the nut 123B is screwed into the bolt 123A. The head of the bolt 123A and the nut 123B sandwich the tubular portion 122A and the pile main body 121 (FIG. 9 (C)). As a result, the correction material 122 can be fixed to the pile body 121 in a state where the height position with respect to the pile body 121 is appropriately positioned. As is well known, a washer 123C can be naturally used for sandwiching the bolt 123A, the tubular portion 122A, and the pile body 121 by the nut 123B.
In the example shown in FIG. 9, the spiral mounting grooves 122A1 provided in the tubular portion 122A were in a series. However, if the mounting grooves 122A1 are in a series, the strength of the tubular portion 122A may be affected, but the mounting grooves 122A1 do not function except for the portion penetrated by the bolt 123A. Therefore, it is possible to leave the wall of the tubular portion 122A as it is without providing the mounting groove 122A1 in the portion of the mounting groove 122A1 that is not planned to be penetrated by the bolt 123A from the beginning, in other words, to divide the mounting groove 122A1. be. For example, in the example shown in FIG. 9, since the tubular portion 122A and the pile main body 121 are penetrated by the three bolts 123A, the mounting groove 122A1 is divided into three parts, and the mounting groove 122A1 is divided into three parts. The wall of the cylinder portion 122A can be left in the cylinder portion 122A. By doing so, it is possible to realize detachable fixing between the cylinder portion 122A and the pile main body 121 by the method as described above while suppressing the influence on the strength of the cylinder portion 122A.

Next, the two foundation rails 110 are fixed to the piles 120 arranged on the two straight lines. Although the foundation rail 110 is long, it does not have to be one, and may be configured by arranging a plurality of members constituting the foundation rail 110 on the same straight line as is known or well known.
A temporary tent will be provided using these two foundation rails 110. The temporary tent is not limited to this, but in this embodiment, it is provided as shown in FIGS. 10 to 13.
In this embodiment, the temporary tent 200 (see FIG. 13) is configured by combining a plurality of divided tents 210. The split tent (see FIGS. 10-12) is a part of the temporary tent 200. As shown in FIG. 10 and the like, the split tent 210 includes an aggregate 220 and a sheet 230 stretched between the aggregates 220.
The aggregate 220 serves as a framework for the temporary tent 200, and is for supporting the sheet 230 that covers the temporary tent 200. The structure of the aggregate 220 may be the same as that known or well known. The aggregate 220 in this embodiment is perpendicular to the foundation rail 110 when viewed in a plan view, and is arranged at a predetermined interval. Although not limited to this, the distance between the aggregates 220 is constant in this embodiment, and the aggregates 220 are connected to each other by a member (not shown) to maintain the constant distance. It is designed to be used. In this embodiment, the number of aggregates 220 contained in one split tent 210 is three, but this is not the case. The split tent 210 constitutes a temporary tent 200 by moving them on the foundation rail 110 and then combining them as described later. However, if the number of aggregates 220 contained in the split tent 200 is large, the split tent 210 is formed. Since the number of movements of the 210 can be reduced, the work load and the work time related to the movement of the split tent 210 are reduced. However, since the weight of the split tent 210 increases by increasing the number of aggregates 220 contained in the split tent 210, the size of the split tent 210 or the number of aggregates 220 contained therein can be moved. It will be limited by the weight of the split tent 210, and will also be limited by the size of the assembly place of the split tent 210 assembled as described later.
The aggregate 220 is composed of a column 221 extending in the vertical direction and a beam 222 supported by the column 221. Although the columns 221 and the beams 222 are both rod-shaped, they do not have to be composed of one rod-shaped body, and may be configured by combining a plurality of members so as to form a truss structure, for example. The beams 222 in this embodiment constitute the roof of the temporary tent 200, and the two beams are inclined and connected so as to be higher in the center. As a result, the temporary tent 200 will have a gable-shaped roof as shown in FIG. 13, but the structure of the roof of the temporary tent 200 is not limited to this. The temporary tent 200 can cover the entire target range X, and it is necessary that a heavy machine (for example, a mobile crane) as described later can perform work inside the temporary tent 200. The size of the temporary tent 200 may be, for example, a long side exceeding 100 m and a height exceeding 50 m.

The sheet 230 may be, for example, a resin sheet or a sheet in which at least one surface of a woven fabric or knitted fabric made of fibers is coated with resin. Examples of the resin constituting the sheet 230 are vinyl chloride resin, polyethylene and the like, and the thickness thereof is, for example, 0.5 mm to 2.0 mm. The sheet 230 is capable of winding or folding, both of which are possible in this embodiment and is at least flexible enough to bend along the aggregate 220.
The sheet 230 is, in this embodiment, a long rectangle. The width of the sheet 230 is set to be the same as or slightly longer than the distance between adjacent aggregates 220. The length of the sheet 230 in the longitudinal direction corresponds to the length of one aggregate 220, that is, the combined length of the two columns 221 and the two beams 222 contained in one aggregate 220. Has been done. Of course, the sheet 230 may be formed by laminating a plurality of sheet materials by heat fusion or the like.
By fixing both ends of the sheet 230 in the width direction along the two adjacent aggregates 220, the sheet 230 is stretched between the two adjacent aggregates 220. The method of fixing the sheet 230 and the aggregate 220 may be a known or well-known technique. The sheet 230 preferably has a certain degree of translucency in order to maintain the brightness inside the temporary tent 200, and the sound based on the work performed in the temporary tent 200 leaks to the outside of the temporary tent 200. It is preferable to have a certain degree of sound insulation in order to prevent the above. It is also possible to make the sheet 230 a double structure mainly for the purpose of improving sound insulation. Further, in selecting the sheet 230, necessary functions such as weather resistance are taken into consideration.

In this embodiment, the split tent 210 is assembled on one end of the foundation rail 110. A heavy machine, for example, a crane, necessary for assembling the split tent 210 is arranged near one end of the foundation rail 110.
In this embodiment, both the columns 221 and the beams 222 are configured by assembling a large number of members in a truss shape. Two pillars 221 of each aggregate 220 are assembled on one end of the two foundation rails 110. Next, the base ends of the two beams 222 are connected to the upper ends of both columns 221 and the beams 222 are extended with an upward slope toward the center of the foundation rail 110, and the tips of the beams 222 are connected to each other. .. As a result, the aggregate 220 is completed. This work is performed on the three aggregates 220.
Next, the aggregates 220 are connected to each other by a member (not shown above) so that the distance between the aggregates 220 is kept constant. Then, the sheet 230 is stretched between the two adjacent aggregates 220.
In this way, the first split tent 210 is constructed on one end side of the foundation rail 110 (FIG. 10).

Next, the first split tent 210 is slid and moved to the other end side of the foundation rail 110 as pointed out in FIG. The method of moving the split tent 210 can be known or known, and the power used for moving the split tent 210 on the foundation rail 110 can be appropriately selected. In this embodiment, but not limited to this, in this embodiment, a hydraulically driven jack spindle is used as power, for example, the main body of the jack spindle is fixed at an appropriate position on the foundation rail 110, and the split tent 210 is provided. By fixing to a cylinder that moves in parallel to the main body of the jack spindle in the length direction of the foundation rail 110 and repeating the work of moving the cylinder in parallel to the main body, the distance corresponding to the moving distance of the cylinder is increased. This is done by moving the split tent 210.
As a result, the split tent 210 is moved to the other end of the foundation rail 110 (FIG. 11).

Next, the second split tent 210 is constructed on one end side of the foundation rail 110 through the same process as the first split tent 210, similarly to the first split tent 210. The construction of the second split tent 210 may be started while the first split tent 210 is moving, and the same applies thereafter.
The constructed second split tent 210 is moved on the foundation rail 110 toward the other end side of the foundation rail 110, similarly to the first split tent 210.
The second split tent 210 is connected to the first split tent 210 near the other end of the foundation rail 110. There are the following two methods for connecting the second split tent 210 and the first split tent 210, and one of them is adopted.
The first method is among the aggregate 220 of the first split tent 210, the rearmost one in the traveling direction of the split tent 210, and the aggregate 220 of the second split tent 210. The frontmost one in the direction of travel of the split tent 210 is connected as it is. In that case, the aggregate 220 of the connected portion is twice as thick as the other aggregate 220 in the traveling direction of the split tent 210. If you dislike it, of the aggregate 220 of each split tent 210, consider the thickness of the split tent 210 in the direction of travel of the front and back of the split tent 210. It should be half of the aggregate 220 of. By doing so, it becomes possible to make the thickness of the aggregate 220 of the connected portion the same as the thickness of the aggregate 220 of the other portion.
In the second method, first, among the aggregate 220 of the first split tent 210, the rearmost one in the traveling direction of the split tent 210 and the aggregate 220 of the second split tent 210. Among them, the second split tent 210 is advanced until there is a gap corresponding to the distance between the aggregates 220 in each split tent 210 from the front one in the traveling direction of the split tent 210. Then, of the aggregate 220 of the first split tent 210, the rearmost one in the traveling direction of the split tent 210, and the aggregate 220 of the second split tent 210, the split tent 210 In the same way as when the split tent 210 is made, the sheet 230 is stretched between the frontmost one and the one in the direction of travel. In this case, of the aggregate 220 of the first split tent 210, the rearmost one in the traveling direction of the split tent 210, and of the aggregate 220 of the second split tent 210, the split tent 210. The above-mentioned member for keeping the distance between the two aggregates constant may be arranged between the two aggregates and the foremost one in the direction of travel.
Whichever method is taken, the second split tent 210 is connected to the first split tent 210.

Similarly, the third split tent 210, the fourth split tent 210, the fifth split tent 210 ... are constructed on one end side of the foundation rail 110, and the other of the foundation rail 110 is placed on the foundation rail 110. After sending it to the end side, it is connected to the split tent 210 in front of it (FIG. 11).
The final split tent 210 does not have to be fed over the foundation rail 110. Finally, the temporary tent 200 that extends over the substantially overall length of the foundation rail 110 is substantially completed (FIG. 12).
In this state, the front and the rear are open when considering the moving direction of the split tent 210 of the temporary tent 200. By covering the open portion with a pentagonal sheet 240 in this embodiment, a temporary tent 200 that completely covers the target range X is completed (FIG. 13).
The seat 240 can be different only in shape from the seat 230. The method of fixing the seat 240 to the front and rear aggregates 220 of the temporary tent 200 may follow a known or well-known technique. The seat 240 is provided with at least one openable door 241 as needed. The door 241 is for heavy machinery and workers to enter and exit the temporary tent 200, and the structure thereof may follow a known or well-known technique. The timing of stretching the seat 240 does not have to be after the temporary tent 200 is in the state shown in FIG. For example, the first split tent 210 may already have a seat 240 stretched when it is assembled on one end side of the foundation rail 110.
When the pentagonal sheet 240 is stretched over the temporary tent 200, columns and beams (not shown) can be appropriately provided in the pentagonal openings before and after the temporary tent. In this case, the bottom edge of the column should be fixed to some foundation. For example, it is possible to base the foundation rail 110 arranged along the short side of the target range X fixed to the pile 120 as described above, and fix the lower end of the pillar on the foundation rail 110. In this case, it can be adopted as a normal method that the columns and beams are assembled after the temporary tent 200 is in the state shown in FIG. 12, and then the seat 240 is attached.

As described above, the temporary tent 200 is constructed on the foundation rail 110 which is the foundation. More specifically, the lower end of the pillar 221 constituting the aggregate 220 rides on the foundation rail 110.
As described above, the foundation rails 110 are arranged one by one on the outside of the two long sides of the target range X. However, when the width of the foundation rail 110 is small, there is a possibility that the thickness of the pillar 221 that can be supported by each foundation rail 110 is also limited. Then, the thickness and strength of the aggregate 220 may be limited.
In order to eliminate such a limitation, it is possible to form a pair of foundation rails 110 arranged outside the two long sides of the target range X, respectively. In this case, as shown in FIGS. 30 and 31, the piles 120 are struck in pairs on two virtual straight lines (first straight lines) parallel to the long side of the target range X. The large number of piles 120 are ideally at the intersection of, for example, a straight line drawn at equal intervals (second straight line) orthogonal to either of the two first straight lines and the two first straight lines. Be struck. Of the large number of piles 120, the pile 120 located on the common second straight line is a set of piles 120. The pile 120 in this case is the same as the pile 120 described in detail so far, including how to use it.
Then, a straddle member 150 as shown in FIG. 30 is passed to one set of piles 120. The straddle member 150 may be a sturdy member having a length sufficient to be passed over a set of piles 120 and capable of forming a flat surface on the straddle member 150. The straddle material 150 is, for example, H steel. If H steel is used so that the letter H is turned sideways, a flat surface is created on it.
In the above example, the foundation rail 110 is fixed to the upper surface of the mounting portion 122B provided by the correction material 122 forming a part of the pile 120, but in this example, the straddle material fixed on the mounting portion 122B of the pile 120. Two foundation rails 110 are mounted in parallel on the upper surface of the 150. That is, in this example, the foundation rail 110 is indirectly fixed to the pile 120 via the straddle member 150.
What is important here is that the upper surface of the straddle member 150 is kept horizontal, and that two rails can be accommodated between the lengths of the straddle member 150 (the length in the second straight line direction) when viewed in a plan view. That is.
As mentioned above, the large number of piles 120 are ideally struck at the intersection of the two first straight lines and the large number of second straight lines. However, the position of each pile 120 may deviate in the first straight line direction or the second straight line direction. When the pile 120 is displaced in the first straight line direction, the straddle member 150 spanned by the set of piles 120 is not orthogonal to the first straight line. Then, it may not be possible to fit the two rails between the lengths of the straddle member 150 in a plan view. When the pile 120 is displaced in the second straight line direction, particularly when the pile 120 is displaced outward from the two first straight lines, the straddle member 150 may not be fixed to the set of piles 120. Such deviations in the first straight line direction and the second straight line direction are absorbed by the expansion of the mounting portion 122B provided in the correction material 122 forming a part of the pile 120. That is, the straddle member 150 can be fixed at a planned position so as to be orthogonal to the first straight line with respect to the set of piles 120.
Further, the position of the upper end of the pile main body 121 in a large number of piles 120, that is, the length of the pile main body 121 protruding from the ground surface may be different for each pile main body 121. Then, there is a possibility that the upper surface of the straddle member 150 passed to the set of piles 120 cannot be kept horizontal. Further, even if the heights of one set of piles 120 are made uniform, and even if the upper surface of the straddle material 150 spanning all one set of piles 120 is horizontal, the heights of all the piles 120 are made uniform. Otherwise, the heights of the horizontal upper surfaces of the straddles 150 may not be the same. In that case, the foundation rail 110 fixed to the upper surface of the straddle member 150 cannot be kept horizontal, or in the worst case, the foundation rail 110 cannot be fixed to the upper surface of the straddle member 150. Such a vertical deviation of the pile body 121 can be absorbed by adjusting the height position of the correction material 122 with respect to the pile body 121.
In this way, two foundation rails 110 are arranged on each of the outer sides of the two long sides of the target range X. If two adjacent foundation rails 110 are referred to as a set of foundation rails 110, the set of foundation rails 110 are both horizontal, linear, and parallel to each other.
The pillar 221 of the aggregate 220 is fixed on the set of foundation rails 110. Indicated by the reference numerals of the four 221A shown in FIG. 31, is a cross section of the pillar body 221A constituting one pillar 221. The prism 221A is, for example, a steel frame and extends in the vertical direction. Although not limited to this, the prism 221A in this embodiment is arranged to be on the foundation rail 110 and to be located on the apex of a predetermined square when viewed in a plan view. The columns 221 in this case are configured by appropriately fixing, for example, a beam-shaped reinforcing member that constitutes a truss structure between the four vertical columns 221A. In that case, the beam 222 is also usually composed of a truss structure as well.
The number of foundation rails 110 fixed on a large number of straddling members 150 arranged in parallel is two in the above example, but this may be one if necessary, or three or more. It can also be.

Then build a pile foundation for the new structure built by rebuilding. The new structure is a building built in scope X, as will be explained later. The pile foundation for one building is cast-in-place piles.
As shown in FIG. 14, the cast-in-place pile 20C to be struck here is struck only within the specific range Y which is a part of the target range X. Note that FIG. 14 is a plan view of the target range X, but the temporary tent 200 is not shown. The specific range Y is a range covered by a gantry, which will be described later, in other words, a range located below the gantry.
A specific method of driving the cast-in-place pile 20C will be described with reference to FIGS. 15 to 19. The method of driving the cast-in-place pile 20C may follow a known or well-known technique. In addition to the driving of the cast-in-place pile 20C in the specific range Y this time, a scene of hitting the cast-in-place pile 20C again later appears, and the same applies in that case as well. It should be noted that FIGS. 15 to 18 are side views of the target range X including the underground as seen from the direction indicated by the arrow indicated by the arrow A in FIG. 1. FIG. 19 is a side view of the target range X including the underground as seen from the direction indicated by the arrow indicated by the arrow B in FIG. 1. FIGS. 15 to 18 and 19 are schematic, and for convenience of drawing, FIG. 14 lacks accuracy especially with respect to the number of cast-in-place piles 20C.
As shown in FIG. 15, first, the pile driver 300 is placed at a predetermined position on the ground leveled ground surface corresponding to the position where the cast-in-place pile 20C in the specific range Y should be driven in the target range X. The pile driver 300 has a function of drilling a hole vertically toward the basement and a function of pouring concrete. These functions may be assigned to a plurality of devices, in which case the pile driver 300 is composed of a plurality of devices.
Then, the hole 301 is dug in the vertical direction by the pile driver 300. If the hole 301 interferes with the old underground portion 10B of the old structure 10 or the old pile 10C, the hole 301 is dug toward the underground while penetrating them. The hole 301 is dug to a position where the cast-in-place pile 20C is strong enough to support the building to be built later. In general, the hole 301 is often dug until it reaches hard ground. It is also possible to make the diameter near the bottom of the hole 301 larger than the portion above it.
Next, in the hole 301, a metal basket, generally made of a reinforcing bar, is placed on the inner wall of the hole 301, which is not shown as a layer cylinder. The cage extends from the bottom of the hole 301 to a predetermined height. Then, liquid concrete is poured into the hole 301 from the pile driver 300. The concrete fills from the bottom of the hole 301 to the top of the car. When the concrete hardens, it becomes a cast-in-place pile 20C (Fig. 16). The car is a reinforcing bar that guarantees its strength in the cast-in-place pile 20C. When the diameter near the bottom of the hole 301 is larger than the portion above it, the cast-in-place pile 20 becomes a bottom-expanded pile.
Next, the pile driver 300 is moved to another place, and the hole 301 is similarly drilled. Then, as in the above case, a basket is placed in the hole 301, concrete is poured into the hole 301, and the concrete is hardened to obtain a cast-in-place pile 20C (FIG. 17).
By repeating the above, as shown in FIGS. 14, 18, and 19, the cast-in-place pile 20C is struck in the entire area of the specific range Y. In this embodiment, it is assumed that the depths (height positions) of the lower ends of the cast-in-place piles 20C are the same, but this is not the case. As described above, the depth of the lower end of each cast-in-place pile 20C is determined from the viewpoint of whether each cast-in-place pile 20C has sufficient strength to support the building to be built later. Further, in this embodiment, it is assumed that the depths (height positions) of the upper ends of the cast-in-place piles 20C are the same, but this is also not the case. The depth of the upper end of each cast-in-place pile 20C is set to a height corresponding to the lower surface of the portion of the underground portion to be described later of the building to be constructed later, in which each cast-in-place pile 20C is located. As a result, the cast-in-place pile 20C will support the underground part of the building as a structure from below.
In the general cast-in-place pile construction method, when the upper end of the cast-in-place pile is underground, the portion above the cast-in-place pile in the hole is usually backfilled. Since the relevant part is removed together with the surrounding earth and sand as described later, there is no particular need to perform such backfilling.
Further, in this example, the pile driver 300 is one and the cast-in-place piles 20C are struck one by one. However, a plurality of pile-driving machines 300 are used to simultaneously drive a plurality of cast-in-place piles 20C. Of course, it is possible to hit at the same time. Of course, it is better if you aim to shorten the construction period.
Further, the work of striking the cast-in-place pile 20 in the specific range Y here is performed on the ground. Such work does not necessarily have to be performed after the temporary tent 200 is completed. Before the temporary tent 200 is made, or in parallel with the work of constructing the temporary tent 200, the work of striking the cast-in-place pile 20 in the specific range Y may be performed. In particular, if the work of driving the cast-in-place pile 20 in the specific range Y in parallel with the work of constructing the temporary tent 200, the effect of shortening the construction period is great. The specific range Y is not limited to the range under the gantry described later, and the range where it is difficult to hit the cast-in-place pile 20 from the bottom of the underground space described later can be determined as the specific range Y. ..

Subsequent work will be described with reference to FIGS. 20 to 29. Of these, the drawing method of FIG. 26 follows that of FIG. 14, and the drawing method of the other figures follows that of FIG.
After the cast-in-place pile 20C is struck in the entire specific range Y as described above, the gantry 410 is then installed (FIG. 20). The gantry 410 is a platform on which heavy machinery, vehicles, and workers ride on the gantry 410 to perform work. The gantry 410 needs to be strong and wide enough to do that. The gantry 410 in this embodiment has a plate shape. The gantry 410 may be the only one when it is first constructed, or may additionally include the minimum upper portion of the support described below. The gantry 410 covers the above-mentioned specific range Y. The specific range Y in this embodiment is rectangular as shown in FIG. 14, but this is not necessarily the case, and the length of the specific range Y extends over the total length of the target range X in the longitudinal direction. There is no need. However, a part of the gantry 410 needs to be in contact with a part of the outer edge of the target range X so that a vehicle or the like can enter the gantry 410 from outside the target range X. For example, in this embodiment, it is convenient, but not limited to, to make the gantry 410 and the edge of the target range X in contact with each other at a part of the door 241 of the temporary tent 200. Then it is done.

After constructing the gantry 410 on the leveled ground surface, the entire target range X is dug down to form an underground space. The temporary tent 200 is complete when the digging of the target range X begins. If the soundproofing performance of the temporary tent 200 and the surrounding environment allow, the work performed in the temporary tent 200, including the digging of the target range X, can be performed continuously for 24 hours every day, for example, in three shifts. Further, since the work in the temporary tent 200 can avoid rain by the temporary tent 200, so-called dry construction can also be executed. A predetermined heavy machine is used for digging into the target range X. In this embodiment, the heavy equipment used for digging the target range X is not limited to this, but preferably a plurality of bulldozers 510 (FIGS. 21 and 22). Other heavy equipment such as power shovels may be used for this task.
When the entire target range X is dug down by the bulldozer 510, a space appears by removing the earth and sand. This is the underground space S. When the underground space S is formed, if the old underground portion 10B of the old structure 10 and the old pile 10C exist there, they are destroyed and removed together with the earth and sand. Since it is possible to remove the old structure 10B and the old pile 10C together with the earth and sand, the labor and time spent for this work are not so large. Sediment, the destroyed old underground part 10B and the old pile 10C are removed from the underground space S. In this embodiment, the earth and sand are pulled up to the top of the gantry 410 by a known or well-known earth removal machine 520 arranged at the bottom of the underground space S that appears. The earth and sand pulled up on the gantry 410 by the earth removal machine 520 is transshipped to, for example, the loading platform of the dump truck 530 mounted on the gantry 410. The dump truck 530 runs on the gantry 410, goes out from the door 241 of the temporary tent 200, and runs to dump the earth and sand in a predetermined place. In this way, by using the gantry 410, the work of discharging the earth and sand from the underground space S to an appropriate place outside the target range X becomes easy. Such earth and sand can be discharged not only in the daytime but also at night. At night, it is generally not necessary to consider traffic congestion, so the dump trucks 530 can come and go as scheduled at a longer distance than usual, and it is easy to collect many dump trucks 530. , Useful for shortening the construction period. If it is necessary to separate the earth and sand from the destroyed old underground part 10B and the old pile 10C, it will be easy to do it outside the target range X, but this is not always the case.
As the bottom of the underground space S is dug down, the gantry 410 naturally needs support. When digging down the underground space S, a support 420 is provided under the gantry 410. The support 420 may have any configuration as long as it can support the gantry 410 from below. The support 420 can be configured by appropriately combining columns and beams, for example. However, in order to reduce the number of cast-in-place piles 20C that need to be struck by digging a deep hole, the range of the specific range Y should be narrowed. From that point of view, the support 420 is viewed in a plan view. It is better to exist only in the range hidden by the gantry 410. This is the case in this embodiment. The lower end of the support 420 is in contact with the bottom of the underground space S, for example, and when the bottom of the underground space S goes down, its length is extended downward accordingly. By doing so, the position of the gantry 410 does not move from the initially provided position.
When constructing the underground space S, the side surface of the underground space S is, for example, vertical. The depth of the underground space S may eventually exceed, for example, 50 m, and if no measures are taken, the side surface of the underground space S may collapse. In order to protect the workers who work in the underground space S from such danger, in this embodiment, the side surface of the underground space S is reinforced by the sheet pile 430, although not limited to this. The sheet pile 430 is configured by driving vertically elongated rectangular plates in parallel along the side surface of the underground space S. The sheet pile 430 may be a waterproof wall or an SMW (Soil Mixing Wall). These are not to drive the board into the ground, but to cast liquid concrete into the ground and then harden it to form a concrete board in the ground. The sheet pile 430 covers the entire surface of the underground space S, and its lower end extends to a position deeper than the bottom of the finally formed underground space S, for example. The sheet pile 430 has a force that pushes the sheet pile 430 inward from the outside toward the side of the underground space S, but in order to allow the sheet pile 430 to resist the force, the sheet pile 430 A known earth anchor 440 may be provided on the outside. In this embodiment, for example, as shown in FIG. 22. The earth anchor 440 applies an outward and downward force to the sheet pile 430. The applied force is applied to a plurality of points in the vertical direction of the sheet pile 430. The sheet pile 430 may be constructed before the start of excavation of the target area X for the formation of the underground space S, or after the excavation of the target area X is started, the stage where the side surface of the underground space S is not expected to collapse. It may be constructed at an appropriate timing.
As is known or well known, the earth anchor 440 is installed in order from the one above the underground space S as the underground space S is dug downward.

Then, the underground space S is dug to the planned depth. The depth of the bottom of the planned underground space S is the depth at which the upper end of the cast-in-place pile 20C struck in the specific range Y and its height position are aligned, or the height position higher than the upper end of the cast-in-place pile 20C. Is a somewhat higher depth. In this embodiment, the bottom of the underground space S is set to a depth at which the upper end of the cast-in-place pile 20C struck in the specific range Y and its height position are aligned (FIG. 23). The depth of the bottom of the underground space S does not necessarily have to be lower than the depth at which the old underground portion 10B and the old pile 10C exist.
Next, a new cast-in-place pile 20C is struck at the bottom of the underground space S. The cast-in-place pile 20C to be newly struck is struck in a range excluding a specific range Y in the target range X in a plan view. The cast-in-place pile 20C to be struck this time is struck from the bottom of the underground space S, not from the ground surface.
In order to hit the cast-in-place pile 20C at the bottom of the underground space S, the same pile driver 300 as described above is dropped onto the bottom of the underground space S. The pile driver 300 may be one or a plurality. The pile driver 300 is, for example, lowered from the top of the gantry 410 to the bottom of the underground space S by a crane truck 540 mounted on the gantry 410 (FIG. 24).
In this case, the method of driving the cast-in-place pile 20C outside the specific range Y is the same as the method of driving the cast-in-place pile 20C in the specific range Y described above. A hole 301 (FIG. 24) is dug, an unillustrated basket is placed therein, and liquid concrete is poured into the hole 301 to harden it. As a result, the cast-in-place pile 20C is struck. The cast-in-place pile 20C will be struck as needed over the entire area within the target range X outside the specific range Y when the bottom of the underground space S is viewed in a plan view (FIGS. 25 and 26). Here, the vertical length of the hole 301 dug for striking the cast-in-place pile 20C is shorter than the vertical length of the hole 301 dug for striking the cast-in-place pile 20C within the specific range Y, and also. When digging the hole 301, the old underground part 10B and the old pile 10C do not interfere with the digging of the hole 301, or are few. Therefore, the work of striking one cast-in-place pile 20C outside the specific range Y takes much less time than the work of striking one cast-in-place pile 20C in the specific range Y. Therefore, in combination with the fact that the number of cast-in-place piles 20C struck outside the specific range Y is generally much larger than the number of cast-in-place piles 20C struck in the specific range Y, the cast-in-place pile 20C is used. The total time required to hit will be saved significantly.
In this embodiment, the height positions of the lower ends of the plurality of cast-in-place piles 20C struck outside the specific range Y are the same as the height positions of the lower ends of the plurality of cast-in-place piles 20C struck in the specific range Y. ing. However, this is not the case for the same reason as in the case of each cast-in-place pile 20C struck within the specific range Y. Further, in this embodiment, the height position of the upper end of the plurality of cast-in-place piles 20C struck outside the specific range Y is the height position of the upper end of the plurality of cast-in-place piles 20C struck in the specific range Y. They are also available. However, this is not the case for the same reason as in the case of each cast-in-place pile 20C struck within the specific range Y.

In this way, the required cast-in-place pile 20C is struck over the entire target range X in a plan view.
After the cast-in-place pile 20C is struck, the underground part 20B, which is the underground structure of the new building, is then constructed (Fig. 27).
To construct the underground portion 20B, for example, a heavy machine mounted on the gantry 410 is used. This heavy machine is, for example, a crane or a mobile crane. In this embodiment, the heavy equipment is assumed to be a mobile crane 540. By lowering the material (not shown) carried on the gantry 410 by the crane truck 540, for example, into the underground space S, the underground portion 20B is moved upward in order from the bottom of the underground space S. It will be built for. The underground portion 20B has a known or well-known structure such as pillars, walls, floors, etc., and is divided into a plurality of floors as needed. Of course, a worker may get down to the underground space S to perform the work. The bottom of the underground portion 20B is supported by the upper end of the cast-in-place pile 20C. As a result, the underground portion 20B will be supported by the cast-in-place pile 20C from below.
When the underground portion 20B is constructed in the underground space S, the underground portion 20B may interfere with the support 420 of the gantry 410. In that case, the support 420 that interferes with the underground portion 20B may be removed, and the directly above the removed support 420 may be fixed to the underground portion 20B. The removed support 420 can be lifted onto the gantry 410 by, for example, a mobile crane 540, and the support 420 lifted onto the gantry 410 can be lifted onto the gantry 410 by, for example, a dump truck (not shown) in a temporary tent 200. Just carry it out. Further, as the underground portion 20B is constructed, the earth anchor 440 is removed in order from the one below it.
The support 420 of the gantry 410 may be cleaned up as follows. In this case, the configuration of the support 420 is slightly different from that described so far. In this case, the support 420 is composed of columns extending in the vertical direction and beams connecting the columns in a reinforcing manner. First, a pillar is driven from the ground surface in the same manner as when the cast-in-place pile 20C is driven from the ground surface into the specific range Y. This work is performed at the same time as or before or after the work of driving the cast-in-place pile 20C into the specific range Y. The lower end of the pillar should reach at least a place deeper than the bottom of the underground space S, and the support 420 should reach a depth that can stably support the gantry. For example, in the support 420, the lower end of the cast-in-place pile 20C to be struck in the specific range Y and the lower end thereof are aligned with each other. The gantry 410 is installed on the pillars provided in this way. After that, as described above, the target range X is dug downward to form the underground space S. As the underground space S is dug, the above-mentioned pillars that are part of the support 420 are gradually exposed from above. As the length of the exposed columns increases, the strength of the columns becomes uncertain. Therefore, the beam is appropriately fixed to the exposed column. This work is appropriately performed while digging the underground space S, and a sufficient number of beams are provided on the pillars. As a result, the gantry 410 and the support 420 existing in the underground space S are the same as those shown in FIGS. 24 and 25, except that the lower ends of the columns reach below the bottom of the underground space S. ..
Also in this case, as described above, the underground portion 20B is constructed in the underground space S from the lower side to the upper side. In this case, the support 420 of the gantry 410 that interferes with the underground portion 20B is not removed. Even if the support 420 of the gantry exists, the underground part 20B will be constructed regardless of it. Roughly speaking, the underground part is made of steel frame and concrete that has been cast and hardened. The support 420 is pre-made at a position that does not interfere with the steel frame and is partially embedded in concrete. In the underground portion 20B, for example, there is a space that becomes a corridor or a living room, a part of the support 420 is embedded in the underground portion 20B, and the rest of the support 420 is exposed in the space. become. Then, at some timing, for example, at an appropriate timing after the underground portion 20B is completed, the portion of the support 420 embedded in the underground portion 20B is exposed to the space inside the underground portion 20B as it is. Remove only the part that is doing. Then, the cross sections of the columns and beams of the support 420 are exposed on the walls, ceilings, etc. of the underground portion 20B. If the cross section of such exposed columns or beams is aesthetically problematic, the aesthetic problem can be solved by painting or putting wallpaper on it. It is also possible to dispose of the gantry 410 and the support 420 in this way.
By performing the work as described above, the underground portion 20B is completed in the underground space S (FIG. 28). All the work from the start of formation of the underground space S to this point is performed in the temporary tent 200.

When the underground part 20B is completed, the temporary tent 200 is removed. Further, if the sheet pile 430 is no longer needed by backfilling the space between the sheet pile 430 and the underground portion 20B, the sheet pile 430 may be removed. The sheet pile 430 may be left. Further, if the sheet pile 430 is no longer needed by backfilling the space between the sheet pile 430 and the underground portion 20B, the sheet pile 430 and the earth anchor 440 may be removed. The foundation rail 110 and the ready-made pile 120 may be removed together with the temporary tent 200.
The temporary tent 200 and the like may be removed by publicly known or well-known techniques.
After removing the temporary tent 200 and other unnecessary items, the above-ground part of the structure (not shown) will be constructed. The above-ground part of the structure can be constructed by the same construction method as the conventional construction method.
For the above-ground portion, for example, the tower crane 550 provided on the base 20D for the tower crane constructed on the underground portion 20B before and after the removal of the temporary tent 200 may be used. The tower crane 550 may be a mast climbing type, but of course a floor climbing type may be used. The above-ground part extends upward and is eventually completed.
The new building will be completed by completing the underground part and the above-ground part. This completes the rebuilding of the building.

10 Old structure 10A Old above-ground part 10B Old underground part 10C Old pile 20B Underground part 20C Cast-in-place pile 20D Base 110 Foundation rail 120 Pile 121 Pile body 121A Anchor body 122 Corrective material 122A Crane part 122A1 Mounting groove 122B Mounting part 123A Bolt 123B Nut 123C Washer 200 Temporary tent 210 Split tent 220 Aggregate 221 Pillar 222 Beam 230 Seat 240 Sheet 300 Pile driver 301 Hole 410 Platform 420 Support 430 Sheet pile 440 Earth anchor 510 Bulldozer 520 Drainer 530 Crane S Underground space X Target range Y Specific range

Claims (4)

Rails laid horizontally and in a straight line,
A plurality of pile bodies, which are ready-made piles driven into the ground surface at predetermined intervals so as to ride on a straight line parallel to the straight line,
It is configured so that it can be fixed in a state of being positioned at an arbitrary position in the length direction of the pile body attached to the upper end of each of the pile bodies, and at the upper end thereof, all from the pile body when viewed in a plan view. A plurality of compensators having a flat mounting portion that squeezes out in the direction and has a flat surface on which the rail is mounted, which is perpendicular to the length direction of the pile body while it is fixed to the pile body.
Equipped with
The correction material is provided with a guided portion near the upper end of the pile body so that the correction material can be translated with respect to the pile body while being guided by the pile body.
The pile body has a cylindrical shape and has a cylindrical shape.
The guided portion in the correction material corresponds to the outer surface of the pile body and is guided to the outer surface of the pile body, or corresponds to the inner surface of the pile body and is guided to the inner surface of the pile body. It has a cylindrical shape with an outer surface.
By appropriately positioning the correction material fixed to the pile body with respect to the pile body in the length direction using the pile body and the guided portion, a plurality of riders on the straight line parallel to the straight line. The heights of the planes of the mounting parts mounted on all of the pile bodies are the same.
By mounting the rail on each of the planes of the plurality of mounting portions, the rail is supported from below by the plurality of pile bodies and the compensating material.
Rail structure. A predetermined member is attached to the attachment portion, and the rail is attached to the attachment portion via the predetermined member.
The rail structure according to claim 1 . The pile body is located at the intersection of the two straight lines, which are a plurality of straight lines at predetermined intervals orthogonal to the two straight lines, on the two straight lines parallel to the straight line on which the rail rides. As well as being driven in each
When two piles struck so as to ride on the same one of the plurality of orthogonal lines among the pile main bodies are used as a set of pile main bodies, the attachment portion of the set of piles is used. , Both ends of the straddle having a flat surface whose upper surface is a horizontal plane are fixed, and the rail is fixed to the upper surface of the straddle, so that the rail is fixed to the pile body via the straddle. It is fixed to the mounting part
The rail structure according to claim 1 . Two rails parallel to each other are fixed to the plane of the straddle.
The rail structure according to claim 3 .

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