JP2020084529A - Foundation structure, footing member, and foundation structure construction method - Google Patents

Abstract

To provide a foundation structure, a footing member, and a foundation structure construction method capable of reducing the labor of construction.SOLUTION: A foundation structure that supports a building comprises a precast footing member 1 that is used by being buried in the ground where the building is built. The footing member 1 comprises a footing side through hole 12 through which a pile body supporting a building is inserted, the footing side through hole 12 for adjusting the relative position between the pile body and the footing member 1. A gap between the footing member 1 and the pile body inside the footing side through hole 12 is filled with a filler. One footing side through hole 12 is provided at a position near the center of the footing member 1. The entire area of an upper surface of the footing member 1 is a concrete casting area. A joint is joined to a pile head of the pile body. A reinforcing bar does not project from a side surface of the footing member 1.SELECTED DRAWING: Figure 2

Description

The present invention relates to a foundation structure, a footing member, and a method of constructing a foundation structure.

Conventionally, when building a building on soft ground, a pile was driven into the ground and the building was supported by the pile (see Patent Document 1, for example).

JP, 2016-186154, A

However, when building a building using the pile, it was necessary to build the frame of the building based on the pile that was driven into the ground, so it is necessary to control the position where the pile is driven very strictly. There was a possibility that the effort of the person would increase.

The present invention has been made in view of the above facts, and an object of the present invention is to provide a foundation structure, a footing member, and a method of constructing a foundation structure that can reduce the labor of construction.

In order to solve the above-mentioned problems and to achieve the object, the basic structure according to claim 1 is a basic structure that supports a building, and is made of precast material that is used by being buried in the ground where the building is built. Footing member of the, the footing member is a through hole through which a pile body supporting the building is inserted, the through hole for adjusting the relative position of the pile body and the footing member, Equipped with.

A base structure according to a second aspect is the base structure according to the first aspect, wherein a gap between the footing member and the pile body inside the through hole is filled with a filler.

The basic structure according to claim 3 is the basic structure according to claim 1 or 2, wherein one through hole is provided at a position closer to the center of the footing member.

According to a fourth aspect of the present invention, in the basic structure according to any one of the first to third aspects, the entire area of the upper surface of the footing member is a concrete casting area.

A base structure according to a fifth aspect is the base structure according to any one of the first to fourth aspects, wherein a joint body is joined to a pile head of the pile body.

A base structure according to a sixth aspect is the base structure according to any one of the first to fifth aspects, in which a reinforcing bar does not protrude from a side surface of the footing member.

The footing member according to claim 7 is a precast footing member that is used by being buried in the ground where a building is built, and the footing member is a through hole through which a pile supporting the building is inserted. In addition, the through hole for adjusting the relative position between the pile body and the footing member is provided.

The method for constructing a foundation structure according to claim 8 is a method for constructing a foundation structure that supports a building, wherein the pile body provided on the ground where the building is constructed is a precast footing member. The step of positioning the footing member having a through hole, and the step of filling the footing member, the step of positioning the footing member, in the state that the pile body is inserted into the through hole, Adjusting the relative position of the pile body and the footing member.

According to the foundation structure according to claim 1, the footing member according to claim 7, and the method for constructing the foundation structure according to claim 8, the precast footing member used by being buried in the ground is a pile body. By providing a through hole for adjusting the relative position with the footing member, for example, in addition to the pile body, a footing member can be used as a reference for constructing a building, and, for example, a pile body of the footing member. Since it is possible to adjust the position with respect to, it is possible to give redundancy to the reference position for constructing the building, reduce the accuracy of driving the pile body, and reduce the labor of construction. In addition, since the footing member is made of precast, it is not necessary to generate the footing member on site, so that the work period can be shortened. Further, for example, since the footing member is buried in the ground, it becomes possible to firmly support the building.

According to the basic structure of claim 2, the gap between the footing member and the pile body inside the through hole is filled with the filler, so that, for example, between the footing member and the pile body. Since the gap can be filled, the footing member and the pile body can be firmly fixed to each other.

According to the basic structure of claim 3, since one through hole is provided at a position closer to the center of the footing member, for example, the pile body can be easily inserted into the through hole. Further, since the footing member can be rotated with the pile body inserted, the workability can be improved.

According to the basic structure of the fourth aspect, since the entire area of the upper surface of the footing member is a concrete casting area, for example, concrete can be poured into the entire area of the upper surface of the footing member. Therefore, it becomes possible to firmly support the building.

According to the foundation structure of claim 5, the joined body is joined to the pile heads of the pile body, so that, for example, the building is supported using the joined body integrally provided with the pile body. Therefore, it becomes possible to firmly support the building.

According to the basic structure of claim 6, since the reinforcing bars do not project from the side surface of the footing member, for example, the footing members can be placed next to each other in a limited area. (Temporary storage) Space can be saved.

It is a top view of the footing member concerning this embodiment. It is a front view of a footing member. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure. It is a figure for demonstrating the construction method of a basic structure.

Embodiments of a foundation structure, a footing member, and a method of constructing a foundation structure according to the present invention will be described in detail below with reference to the accompanying drawings. First, the basic concept of the [I] embodiment will be described, then the specific contents of the [II] embodiment will be described, and finally, a modified example of the [III] embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic Concept of Embodiment First, the basic concept of the embodiment will be described. The embodiments generally relate to a foundation structure, a footing member, and a method of constructing the foundation structure.

Here, the "foundation structure" is a part (base) that supports a building and is fixed to the ground, and supports the building, and specifically, at least includes a footing member, For example, in addition to the footing member, any member including a pile body or the like is provided. The “building” is an object to be built, and is a concept including, for example, so-called arenas, gymnasiums, office buildings, houses, and the like.

The “pile body” is a support means for supporting a building, and specifically, is one that is at least partially buried in a pile hole in the ground, for example, one in which a joint body is joined to a pile head, etc. Is a concept that includes. The “joint body” is one that is joined to a pile head, and includes, for example, a pile head reinforcement, a column or a component of a column (as an example, a column main bar), or a beam or a component of a beam. It is a concept.

The "footing member" is a member for dispersing the load applied to the foundation structure, specifically, a precast member that is used by being buried in the ground where the building is constructed, and It is provided with holes. The specific configuration of this footing member is arbitrary, and for example, the entire area or only a partial area of the upper surface of the footing member is a concrete pouring area (that is, a concrete pouring area). Thing, or a reinforcing bar (for example, a differential bar) protruding from the side surface of the footing member, or the reinforcing bar not protruding from the side surface of the footing member (the reinforcing bar is not provided on the side surface) And so on.

The "through hole" is a hole provided through the footing member, specifically, a hole through which a pile body supporting a building is inserted, and the pile body and the footing member. It is a hole for adjusting the relative position with respect to, for example, a hole having a larger diameter than the pile body. The specific configuration of the through hole is arbitrary, and for example, only one hole, two or more holes, a hole provided near the center of the footing member, or a footing member It is a hole corresponding to a hole provided at a position near the outer circumference.

Further, when the pile body is inserted into the through hole, a gap is formed between the footing member and the pile body inside the through hole, and the gap may be filled with a filler. Alternatively, the filler may not be filled. The “filler” is filled in the gap between the footing member and the pile body inside the through hole, and is a concept including concrete or mortar, for example.

"Construction method of foundation structure" is a method of constructing a foundation structure that supports a building, and specifically, at least a footing made of precast on a pile provided in the ground where the building is constructed. The method includes a step of positioning a footing member having a through hole and a step of filling the footing member. The “positioning of the footing member” is, for example, a step including at least a step of adjusting the relative position between the pile body and the footing member while the pile body is inserted into the through hole.

And, in the embodiment shown below, regarding the "footing member", the entire area of the upper surface is a concrete casting area, the reinforcing bars do not project from the side surface, and the "through hole" Only one is provided at a position near the center of the footing member, and the case where concrete is filled as a "filler" in the gap between the footing member and the pile body will be described.

[II] Specific Content of Embodiment Next, specific content of the embodiment will be described.

(Constitution)
First, the footing member according to the present embodiment will be described. 1 is a plan view of a footing member according to the present embodiment, and FIG. 2 is a front view of the footing member. 1 and 2, a large number (three or more) of footing side reinforcing bars 11 are projected, and two of these are designated by a representative number.

Further, in the following description, the XYZ directions shown in the respective drawings are directions orthogonal to each other. Specifically, the Z direction is a vertical direction or a vertical direction, and the X direction and the Y direction are vertical directions. For example, the Z direction is referred to as the height direction, the +Z direction is referred to as the upper side (plane), and the −Z direction is referred to as the lower side (bottom surface).

(Structure-footing member)
The footing member 1 of FIGS. 1 and 2 is a member for dispersing the load applied to the foundation structure, as described above. Although the specific type and configuration of the footing member 1 are arbitrary, for example, the footing member 1 is made of precast (precast concrete) to be used by being buried in the ground where a building is constructed, and the overall shape is It is in the shape of a rectangular column, and has no reinforcing bars on its side surfaces (the surface in the +X direction, the surface in the −X direction, the surface in the +Y direction, the surface in the −Y direction). Further, the footing member 1 includes, for example, a footing side reinforcing bar 11 and a footing side through hole 12.

(Structure-Footing member-Footing side reinforcement)
The footing-side reinforcing bar 11 is a reinforcing bar provided in the footing member 1. The footing-side reinforcing bar 11 may have any specific type or configuration, but as shown in FIGS. 1 and 2, a plurality of projecting reinforcing bars 11 project from a position near the outer periphery on the upper surface (surface in the Z direction). The shape of the footing-side reinforcing bars 11 inside the footing member 1 is arbitrary, and for example, some of the footing-side reinforcing bars 11 are bent in the X direction or the Y direction. .. Further, inside the footing member 1, unillustrated reinforcing bars provided surrounding the footing side through hole 12 are also arranged.

(Structure-Footing member-Footing side through hole)
The footing side through hole 12 is the through hole described above. Although the specific type and configuration of the footing-side reinforcing bar 11 are arbitrary, for example, it is a hole penetrating in the height direction (Z-axis direction), and one at the position near the center of the footing member 1. It is a hole provided only, a circular hole having a shape (here, a similar shape) corresponding to the outer shape of the pile body 22 described later, and a hole having a larger diameter than the pile body 22. is there.

(Construction method of foundation structure)
Next, a method of constructing a foundation structure using the footing member 1 thus configured will be described. 3 to 10 are views for explaining the construction method of the foundation structure. 3 to 10 are views for explaining each step (step) for constructing the base structure 200 shown in FIG. 10, and are views of each element of the base structure 200 viewed from the front side. However, in particular, a hidden portion such as the underground that cannot be actually seen is illustrated as a solid line for the sake of convenience of description. In addition, in FIGS. 3 to 10, a part of the configuration (for example, a known reinforcing bar) that can be configured in the same manner as in the related art is omitted for convenience of description, and the footing member is not shown. The outline of 1 is simplified and shown. In addition, only the outline will be described for the parts that can be constructed by the same method as the conventional method.

First, as shown in FIG. 3, the pile body 22 is constructed on the ground 21. Although the specific process is arbitrary, for example, the pile hole 23 is excavated along the vertical direction (Z-axis direction), the pile body 22 is inserted into the excavated pile hole 23, and cement or the like is piled in the pile hole 23. After the pile body 22 is constructed by injecting it into the gap (not shown) between the body 22 and the ground 21, the pile head (the end portion in the +Z direction) of the pile body 22 is processed to obtain the pile body 22. The pile body 22 is constructed by setting the pile head of No. 1 to the same height as the ground 21.

Next, as shown in FIG. 4, the periphery of the pile body 22 is constructed. Although the specific process is arbitrary, for example, by excavating the ground 21 around the pile body 22 of FIG. 3, the excavation portion 24 that is the excavated portion of FIG. 4 is formed, and the upper side of the pile body 22 ( By exposing the end portion on the (+Z side), the end portion is projected from the bottom portion 25 which is the bottom of the excavation portion 24. Next, crushed stones (not shown) are laid and compacted, and then discarded concrete 31 is placed in the compacted portion as shown in FIG. The reference position of the reinforcing bar or the installation position of the footing member 1) is marked based on the position of the pile body 22 and the structural drawing of the building.

Next, as shown in FIG. 5, the pile side reinforcing bars 41 are applied to the pile body 22. The “pile side reinforcing bar” 41 is the above-mentioned joined body, and specifically, is a pile head reinforcing bar constructed on the pile body 22. Although the specific process is arbitrary, for example, it is assumed that the reinforcing bars are arranged in the pile-side reinforcing bars 41, and the pile-side reinforcing bars 41 are fixed to the pile heads of the pile body 22 by welding to the reinforcing bars. Then install.

Next, as shown in FIG. 6, the footing member 1 is positioned on the pile body 22. Although the specific process is arbitrary, for example, after lifting the footing member 1 to the upper side (+Z direction) of the pile body 22 using a heavy machine or the like, the pile side reinforcing bar 41 and the pile body 22 are provided in the footing side through hole 12. The footing member 1 is dropped so as to be continuously inserted and placed on the discarded concrete 31. In this case, as shown in FIG. 6, the pile body 22 is inserted into the footing side through hole 12. Next, using the gap 120 between the footing member 1 and the pile body 22 provided inside the footing side through hole 12 in a state where the pile body 22 is inserted into the footing side through hole 12. By adjusting the relative position between the footing member 1 and the pile body 22 using a heavy machine or the like, the footing member 1 is placed and positioned at a position corresponding to the above-mentioned reference that has been marked out. Since the relative position between the footing member 1 and the pile body 22 can be adjusted in this manner, the footing member 1 can be installed as expected even if the position of the pile body 22 is slightly deviated from the expected position. It will be possible.

Next, as shown in FIG. 7, the footing member 1 is filled by filling back at least the excavation portion 24 of FIG. Although the specific process is arbitrary, for example, with the footing member 1 as a boundary, the height of the ground 21 of FIG. 3 (the height of the ground 21 on the right side of the drawing in FIG. 3 is higher than the height of the ground 21 on the left side of the drawing). By backfilling up to a position corresponding to the height (which is higher), the backfilling portion 26 of FIG. In this case, in order to receive the backfilled soil or the like, the steel form frame 61 is provided on the side around the footing member 1 above the upper surface of the footing member 1 (+Z direction) where the soil or the like is leaked (+X). Direction) and then backfilled. Next, the stop frame 51 is provided on the side around the footing member 1 where the soil or the like can be held to the same height as the upper surface of the footing member 1 (-X direction), and then the discarded concrete 32 is poured. Then, the discarded concrete 32 is received and hardened by the upper end (+Z direction) end portions of the stop frame 51 and the steel form frame 61 described above.

Next, as shown in FIG. 8, the first reinforcing bar group 42, the second reinforcing bar group 43, and the column-side reinforcing bar 44 are arranged. The “first reinforcing bar group” 42 is a reinforcing bar for forming a foundation beam, and is specifically a concept including a base lower end main bar, a foundation beam lower end main bar, a stirrup bar, and the like. The “second reinforcing bar group” 43 is a reinforcing bar for forming a foundation beam, and specifically, the base is a concept including a sickle bar, a bottom beam main reinforcement of a foundation beam, a stirrup bar, and the like. The “column-side reinforcing bar” 44 is a reinforcing bar for forming a column (not shown) as a joined body that is joined to the pile head of the pile body 22, and specifically, is a column main bar. Although the specific steps are arbitrary, for example, the reinforcement is performed in the same manner as in the conventional method.

Next, as shown in FIG. 9, concrete is poured. Although the specific process is arbitrary, for example, the floating form 62 is provided, and then the concrete is poured so that the first placing surface 71 is the upper surface of the concrete. In this case, it is possible to firmly fix the pile body 22 and the footing member 1 to each other by filling the concrete 120 into the gap 120 between the footing member 1 and the pile body 22 as a filler and driving it. Becomes Note that, here, for example, arbitrary elements (for example, reinforcing bars, pressure boards, etc.) may be arranged according to the structure of a building (not shown) built in the basic structure 200 of FIG. The arrangement of these arbitrary elements is the same as that of the conventional one, and the description thereof will be omitted.

Next, as shown in FIG. 10, concrete is placed after arranging the third reinforcing bar group 45. The “third reinforcing bar group” 44 is a reinforcing bar for forming a foundation beam, and specifically, is a concept including a foundation beam upper end bar, a stirrup bar, a base puffer bar, and the like. Although the specific process is arbitrary, for example, the concrete is arranged in the same manner as in the conventional method, and after the foundation beam form 63 is provided, the second placing surface 72 is the upper surface of the concrete. To set. This completes the construction of the foundation structure 200.

(Effects of this embodiment)
According to the present embodiment, the precast footing member 1 used by being buried in the ground 21 is provided with the footing side through hole 12 for adjusting the relative position between the pile body 22 and the footing member 1, For example, in addition to the pile body 22, the footing member 1 can be used as a reference for constructing a building, and, for example, the position of the footing member 1 with respect to the pile body 22 can be adjusted, so that a building is constructed. Since the reference position can be provided with redundancy, the accuracy of driving the pile body 22 can be relaxed, and the labor of construction can be reduced. Further, since the footing member 1 is made of precast, it is not necessary to generate the footing member 1 on site, so that it is possible to shorten the construction period. Further, for example, since the footing member 1 is buried in the ground 21, it becomes possible to firmly support the building.

Further, the gap 120 between the footing member 1 and the pile body 22 inside the footing side through hole 12 is filled with concrete as a filler, so that, for example, between the footing member 1 and the pile body 22. Since the gap 120 can be filled, the footing member 1 and the pile body 22 can be firmly fixed to each other.

Further, since one footing side through hole 12 is provided at a position near the center of the footing member 1, for example, the pile body 22 can be easily inserted into the footing side through hole 12, and Since the footing member 1 can be rotated with the pile body 22 inserted, the workability can be improved.

Further, since the entire area of the upper surface of the footing member 1 is the area for placing concrete, for example, it is possible to place concrete on the entire area of the upper surface of the footing member 1, so that the building is firmly supported. It becomes possible to do.

In addition, the pile-side reinforcing bars 41 and the like, which are joined bodies, are joined to the pile heads of the pile bodies 22, so that, for example, a building can be supported using the joined body that is integrally provided with the pile body 22. Therefore, it becomes possible to firmly support the building.

Further, since the reinforcing bars do not protrude from the side surface of the footing member 1, for example, the footing members 1 can be placed next to each other in a limited area, so that the footing member 1 can be stored (temporarily placed) in a space-saving space. Can be realized.

[III] Modifications to Embodiments Although the embodiments according to the present invention have been described above, the specific configurations and means of the present invention are within the scope of the technical idea of each invention described in the claims. In, it can be arbitrarily modified and improved. Hereinafter, such a modified example will be described.

(About problems to be solved and effects of the invention)
First, the problem to be solved by the invention and the effect of the invention are not limited to the above-mentioned contents, and may differ depending on the implementation environment of the invention and details of the configuration, and only a part of the above-mentioned problem May be solved, or only some of the effects described above may be achieved.

(About distribution and integration)
Further, each of the above-described electrical components is functionally conceptual, and does not necessarily have to be physically configured as illustrated. That is, the specific form of distribution and integration of each unit is not limited to that shown in the drawings, and all or a part of them may be functionally or physically distributed or integrated in arbitrary units according to various loads and usage conditions. Can be configured.

(About shape, numerical value, structure, time series)
Regarding the components illustrated in the embodiments and drawings, the shapes, numerical values, or the structure or the time series relationship of a plurality of components may be arbitrarily modified and improved within the scope of the technical idea of the present invention. You can

(About footing members)
Further, the configuration of the footing member 1 of FIGS. 1 and 2 of the above embodiment may be arbitrarily changed. Specifically, the outer shape of the footing member 1 may be a cylindrical shape, a triangular prism shape, a pentagonal prism shape, or the like, and the shape of the footing side through hole 12 may be an elliptical shape or a triangular shape regardless of the outer shape of the pile body 22. , And may be rectangular or the like.

(About filling with filler)
In addition, in the above-described embodiment, when concrete is poured in FIG. 9, it is described that the concrete is filled in the gap 120 between the footing member 1 and the pile body 22 as a filler and then poured. It is not limited to this. For example, in FIG. 6, immediately after the footing member 1 is positioned on the pile body 22, concrete may be filled and poured into the gap 120 between the footing member 1 and the pile body 22 as a filler.

(Appendix)
The basic structure of Supplementary Note 1 is a basic structure that supports a building, and includes a precast footing member that is used by being buried in the ground where the building is built, and the footing member supports the building. The through hole for inserting the pile body is provided, and the through hole for adjusting the relative position between the pile body and the footing member.

In the basic structure according to appendix 2, in the basic structure according to appendix 1, a filler is filled in a gap between the footing member and the pile body inside the through hole.

The basic structure of supplementary note 3 is the basic structure of supplementary note 1 or 2, wherein one through hole is provided at a position closer to the center of the footing member.

The basic structure according to Appendix 4 is the basic structure according to any one of Appendixes 1 to 3, in which the entire area of the upper surface of the footing member is a concrete casting area.

The basic structure of Supplementary Note 5 is the basic structure according to any one of Supplementary Notes 1 to 4, in which a joined body is joined to a pile head of the pile body.

The basic structure according to Supplementary Note 6 is the basic structure according to any one of Supplementary notes 1 to 5, in which reinforcing bars do not project from the side surface of the footing member.

The footing member of Supplementary Note 7 is a precast footing member that is used by being embedded in the ground where a building is built, and the footing member is a through hole through which a pile supporting the building is inserted. , The through hole for adjusting the relative position between the pile body and the footing member.

The method of constructing the basic structure of Appendix 8 is a method of constructing a basic structure for supporting a building, which is a footing member made of precast on a pile body provided on the ground where the building is constructed, A step of positioning the footing member having a hole, and a step of filling the footing member are included, and the step of positioning the footing member includes the pile body in a state where the pile body is inserted into the through hole. Adjusting the relative position to the footing member.

(Effect of notes)
According to the construction method of the basic structure described in Appendix 1, the footing member described in Appendix 7, and the foundation structure described in Appendix 8, the precast footing member used by being buried in the ground is a pile body and the footing member. By providing a through hole for adjusting the relative position with, for example, a footing member in addition to the pile body can be used as a reference for constructing a building, and, for example, the position of the footing member relative to the pile body can be set. Since it can be adjusted, the reference position for constructing a building can be provided with redundancy, the accuracy of driving the pile body can be relaxed, and the labor of construction can be reduced. In addition, since the footing member is made of precast, it is not necessary to generate the footing member on site, so that the work period can be shortened. Further, for example, since the footing member is buried in the ground, it becomes possible to firmly support the building.

According to the basic structure described in appendix 2, the gap between the footing member and the pile body inside the through hole is filled with the filler, so that, for example, the gap between the footing member and the pile body. The footing member and the pile body can be firmly fixed to each other, since it can be embedded.

According to the basic structure described in appendix 3, since one through hole is provided at a position closer to the center of the footing member, for example, the pile body can be easily inserted into the through hole, Further, since the footing member can be rotated with the pile body inserted, the workability can be improved.

According to the basic structure described in appendix 4, since the entire area of the upper surface of the footing member is the area for placing concrete, for example, it is possible to place concrete on the entire area of the upper surface of the footing member. It becomes possible to firmly support the building.

According to the basic structure described in appendix 5, by joining the joined body to the pile heads of the pile body, for example, it is possible to support the building by using the joined body provided integrally with the pile body. Therefore, it becomes possible to firmly support the building.

According to the basic structure described in appendix 6, since the reinforcing bars do not project from the side surface of the footing member, for example, the footing members can be placed next to each other in a limited area. It is possible to reduce the space required for the placement.

1 Footing Member 11 Footing Side Reinforcing Bar 12 Footing Side Through Hole 21 Ground 22 Pile Body 23 Pile Hole 24 Excavation Section 25 Bottom 26 Backfill Section 31 Discarded Concrete 32 Discarded Concrete 41 Pile Side Reinforcement 42 1st Reinforcing Bar Group 43 2nd Reinforcing Bar Group 44 Column side reinforcing bar 45 Third reinforcing bar group 51 Stop frame 61 Steel form 62 Floating form 63 Foundation beam form 71 First placing surface 72 Second placing surface 120 Gap 200 Basic structure

Claims (8)

A basic structure that supports a building,
A footing member made of precast that is used by being buried in the ground where the building is built,
The footing member is a through hole through which a pile supporting the building is inserted, and the through hole for adjusting the relative position between the pile and the footing member is provided,
Foundation structure. The gap between the footing member and the pile body inside the through hole is filled with a filler,
The basic structure according to claim 1. One of the through holes is provided at a position near the center of the footing member,
The base structure according to claim 1. The entire area of the upper surface of the footing member is a concrete casting area,
The foundation structure according to any one of claims 1 to 3. A joined body is joined to the pile head of the pile body,
The foundation structure according to any one of claims 1 to 4. Reinforcing bars are not protruding from the side surface of the footing member,
The foundation structure according to any one of claims 1 to 5. A precast footing member that is used by being buried in the ground where the building is built,
The footing member is a through hole through which a pile supporting the building is inserted, and the through hole for adjusting the relative position between the pile and the footing member is provided,
Footing material. A method of constructing a foundation structure for supporting a building,
A step of positioning the footing member having a through hole, which is a footing member made of precast in a pile body provided in the ground where the building is built,
Filling the footing member,
The step of positioning the footing member includes
Adjusting the relative position of the pile body and the footing member in a state in which the pile body is inserted into the through hole,
Construction method of foundation structure.

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