Support body, support structure, and construction method for support structure

Abstract

To provide a support which allows a floor to be placed above one of the clamping parts and allows a door frame or the like to be easily placed above the other clamping part. [Solution] The support 16A comprises a first clamping portion 17A having a pair of opposing first plate-shaped portions 17aA, 17bA, a second clamping portion 18A having a pair of opposing second plate-shaped portions 18aA, 18bA arranged opposite the first clamping portion, and a bottom portion 19A connected to the lower ends of the first clamping portion and the second clamping portion, respectively, and the height of the first clamping portion is greater than the height of the second clamping portion.

Description

[Technical field]

[0001] The present disclosure relates to supports, support structures, and methods of constructing support structures. [Background technology]

[0002] Conventionally, a plate-like body is used as a part of a formwork for constructing a foundation of a building (for example, see Patent Documents 1 and 2). A support is used to support the plate-like body. The support includes a first clamping portion, a second clamping portion, and a bottom portion connected to the lower end of the first clamping portion and the lower end of the second clamping portion, respectively.

[0003] The first clamping portion has a pair of first plate-shaped portions for disposing the first plate-shaped body, and the second clamping portion has a pair of second plate-shaped portions for disposing the second plate-shaped body. For example, a floor, a door frame, etc. are disposed above the first and second clamping portions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 57-209364 [Patent Document 2] Patent No. 5805904 Summary of the Invention [Problem to be solved by the invention]

[0005] The inventors have considered using a formwork having a first wall, a second wall, and a bottom wall to construct a foundation for a building. The second wall is disposed opposite to the first wall. The bottom wall is connected to the lower end of the first wall and the lower end of the second wall. To construct the foundation of a building, this formwork is placed in the areas that do not correspond to door frames, shutters, etc., and the first and second plate-like bodies supported by supports are placed in the areas that correspond to these. Concrete is then poured into the area enclosed by the formwork and the first and second plate-like bodies to construct the foundation.

[0006] However, depending on the height of the first and second clamping portions, it may be difficult to place a floor, a door frame, etc. above the first and second clamping portions.

[0007] The present disclosure has been made in consideration of such problems, and aims to provide a support that makes it easy to place a floor above one clamping portion and a door frame or the like above the other clamping portion, a support structure including this support, and a construction method for the support structure. [Means for solving the problem]

[0008] The present disclosure relates to A support for constructing a foundation for a building, comprising: A first clamping part having a pair of opposing first plate-shaped parts, a second clamping part having a pair of opposing second plate-shaped parts arranged opposite the first clamping part, and a ground support connected to a lower end of the first clamping part and a lower end of the second clamping part, In a horizontal position and a bottom portion on which the base is disposed, Each of the pair of first plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, and each of the pair of second plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, The first clip portion is a support body having a height greater than a height of the second clip portion. The present disclosure also provides a support structure including a support body, a first plate-like body arranged in the first clamping portion, and a second plate-like body arranged in the second clamping portion.

[0009] The present disclosure also relates to a support structure comprising a support body, a formwork having a first wall, a second wall arranged opposite the first wall, and a bottom wall connected to the lower end of the first wall and the lower end of the second wall, a first plate-like body arranged in the first clamping portion, and a second plate-like body arranged in the second clamping portion, wherein the formwork is arranged on both sides of the width direction of the first clamping portion relative to the support body, such that in the direction in which the pair of first plate-like portions face each other, the first wall side relative to the second wall is the first clamping side relative to the second clamping portion. The present disclosure also relates to a construction method for a support structure, comprising: a support arrangement step of placing a support on the ground; a formwork arrangement step of arranging a plurality of formworks having a first wall, a second wall arranged opposite the first wall, and a bottom wall connected to the lower end of the first wall and the lower end of the second wall, on both sides of the width direction of the first clamping portion relative to the support, such that in the opposing direction in which the pair of first plate-like portions oppose each other, the first wall side relative to the second wall is the first clamping side relative to the second clamping portion; and a plate-like body arrangement step of placing a first plate-like body and a second plate-like body on the first clamping portion and the second clamping portion, respectively. Effect of the Invention

[0010] The support body, support structure, and support structure construction method of the present invention make it easy to place a floor above one of the clamping portions and to place a door frame or the like above the other clamping portion. [Brief description of the drawings]

[0011] [Figure 1] 1 is a plan view of a main part of a building in which a formwork structure according to one embodiment of the present invention is used. [Diagram 2] 2 is a cross-sectional view taken along line A1-A1 in FIG. [Diagram 3] FIG. 2 is a perspective view of multiple supports in the formwork structure. [Figure 4] 2 is a flowchart showing a method for constructing a formwork structure according to one embodiment of the present invention. [Diagram 5] FIG. 11 is a side view of a support body according to a first modified example of an embodiment of the present invention. [Figure 6] FIG. 11 is a side view of a support according to a third modified example of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of a support body, a support structure, and a method for constructing a support structure (hereinafter simply referred to as a construction method) according to the present invention will be described with reference to FIGS. 1 to 6. FIG. As shown in Figures 1 and 2, a formwork structure (support structure) 15 of this embodiment is used for a building 1. Note that in Figure 1, some components are omitted. The building 1 includes a main pillar 10, a formwork structure 15, a floor 55, and a door structure 60. The formwork structure 15 is the foundation of the building 1. Here, an outline L1 of the formwork structure 15 in a plan view is defined. In the plan view, the direction from the inside to the outside of the outline L1 (building 1, formwork structure 15) is defined as the outside D1, and the direction from the outside to the inside of the outline L1 is defined as the inside D2.

[0013] As shown in Fig. 2, a depression G2 is formed in the ground G1 in accordance with the shape of the formwork structure 15 (outline L1) shown in Fig. 1. A plurality of foundations (not shown) are buried at intervals along the bottom surface of the depression G2. For example, the foundations are made of concrete and have a cylindrical shape. For example, the main pillar 10 is made of an H-shaped steel. The main pillar 10 extends upward from the foundation. As shown in FIGS. 1 and 2, the formwork structure 15 has a plurality of (two in this embodiment) supports 16A, 16B, a plurality of formworks 26, a first plate-like body 31, a second plate-like body 36, and a beam 46.

[0014] As shown in FIG. 3, the configuration of support 16A and the configuration of support 16B are plane-symmetrical with respect to reference plane S1. For this reason, the configuration of support 16A is indicated by adding the capital letter "A" to the number or number and lowercase English letter of the symbol. The configuration of support 16B corresponding to support 16A is indicated by adding the capital letter "B" to the same number or number and lowercase English letter of the symbol of support 16A. This avoids redundant explanation. For example, a first clamping portion 17A of support 16A, which will be described later, and a first clamping portion 17B of support 16B are plane-symmetrical with respect to reference plane S1.

[0015] The support 16A has a first clip portion 17A, a second clip portion 18A, and a bottom portion 19A. The first clamping portion 17A has a pair of first plate-shaped portions 17aA, 17bA facing each other in the facing direction X. The second clamping portion 18A is disposed facing the first clamping portion 17A in the facing direction X. The second clamping portion 18A has a pair of second plate-shaped portions 18aA, 18bA facing each other in the facing direction X. The first plate-shaped portions 17aA, 17bA, the second plate-shaped portions 18a, 18b, and the bottom portion 19A are each formed in a flat plate shape. In this example, the first plate-shaped portions 17aA, 17bA, the second plate-shaped portions 18a, 18b, and the bottom portion 19A have a rectangular shape when viewed in the thickness direction. Note that the shapes of the first plate-shaped portions 17aA, 17bA, the second plate-shaped portions 18a, 18b, and the bottom portion 19A are not limited to this. For example, the first plate-shaped portions 17aA, 17bA, the second plate-shaped portions 18a, 18b, and the bottom portion 19A are formed of steel plates.

[0016] The bottom 19A is disposed so that the thickness direction of the bottom 19A is along the vertical direction Z. Here, a width direction Y of the first clamping portion 17A is defined, which is perpendicular to both the facing direction X and the vertical direction Z (thickness direction of the bottom 19A). "A is along B" means that the angle between A and B is 30 degrees or less. The bottom portion 19A is connected to the lower end of the first clip portion 17A and the lower end of the second clip portion 18A. The first plate-shaped portions 17aA, 17bA of the first clamping portion 17A extend upward from an end of a first side X1 (hereinafter simply referred to as the first side X1) in the opposing direction X of the bottom portion 19A. The first plate-shaped portion 17aA is disposed closer to the first side X1 than the first plate-shaped portion 17bA. A gap is formed between the first plate-shaped portion 17aA and the first plate-shaped portion 17bA. In this example, the first plate-shaped portion 17aA is disposed at the end of the first side X1 of the bottom portion 19A.

[0017] The second plate-shaped portions 18aA, 18bA of the second sandwiching portion 18A extend upward from an end of a second side X2 (hereinafter simply referred to as the second side X2) opposite to the first side X1 in the facing direction X of the bottom portion 19A. The second plate-shaped portion 18aA is disposed closer to the first side X1 than the second plate-shaped portion 18bA. A gap is formed between the second plate-shaped portion 18aA and the second plate-shaped portion 18bA. In this example, the second plate-shaped portion 18bA is disposed at the end of the second side X2 of the bottom portion 19A.

[0018] The first plate-shaped portion 17aA is the first plate-shaped portion of the first plate-shaped portions 17aA and 17bA that is farther from the second clamping portion 18A. The first plate-shaped portion 17bA is the first plate-shaped portion of the first plate-shaped portions 17aA and 17bA that is closer to the second clamping portion 18A. Of the first plate-shaped portions 17aA and 17bA, the height of the first plate-shaped portion 17aA is different from the height of the first plate-shaped portion 17bA. More specifically, the height of the first plate-shaped portion 17bA is lower than the height of the first plate-shaped portion 17aA. The height of the first plate-shaped portion 17aA here means the length of the first plate-shaped portion 17aA in the up-down direction Z (thickness direction of the bottom portion 19A). The height of the first plate-shaped portion 17bA and the heights of the second plate-shaped portions 18a and 18b are the same as the height of the first plate-shaped portion 17aA. In this example, the height of the second plate-shaped portion 18aA is equal to the height of the second plate-shaped portion 18aB. The height of the first plate-shaped portion 17bA may be equal to or greater than the height of the first plate-shaped portion 17aA. The height of the second plate-shaped portion 18aA may be greater than or less than the height of the second plate-shaped portion 18aB.

[0019] The height of the first clip portion 17A is greater than the height of the second clip portion 18A. The height of the first clamping portion 17A means the length in the up-down direction Z (thickness direction of the bottom portion 19A) of the higher (not lower) of the multiple first plate-shaped portions 17aA, 17bA of the first clamping portion 17A. The height of the second clamping portion 18A is the same as the height of the first clamping portion 17A. The height of first clip portion 17A may be equal to the height of second clip portion 18A, or may be lower than the height of second clip portion 18A. The width of the first clamping portion 17A is shorter (smaller, narrower) than the width of the second clamping portion 18A. The width of the first clamping portion 17A here means the length in the width direction Y of the first plate-shaped portions 17aA, 17bA of the first clamping portion 17A as a whole (the length in the width direction Y of the shape of the first plate-shaped portions 17aA, 17bA projected in the opposing direction X as a whole). The width of the second clamping portion 18A is also the same as the width of the first clamping portion 17A.

[0020] The width of the first plate-shaped portion 17aA and the width of the first plate-shaped portion 17bA are equal to each other, and the width of the second plate-shaped portion 18aA and the width of the second plate-shaped portion 18aA are equal to each other. The width of the first plate-shaped portion 17aA and the width of the first plate-shaped portion 17bA may be different from each other. The width of the second plate-shaped portion 18aA and the width of the second plate-shaped portion 18bA may be different from each other. The width of the first clip portion 17A may be longer (larger or wider) than the width of the second clip portion 18A, or may be equal to the width of the second clip portion 18A.

[0021] In the width direction Y, the position of the end of the first side Y1 of the first clamping portion 17A as a whole, the position of the end of the first side Y1 of the second clamping portion 18A as a whole, and the position of the end of the first side Y1 of the bottom portion 19A are all coincident. Here, in the width direction Y, the side opposite to the first side Y1 is defined as the second side Y2. In the width direction Y, the position of the end of the second side Y2 of the second clip portion 18A as a whole and the position of the end of the second side Y2 of the bottom portion 19A are aligned with each other. The width of at least a part of the bottom portion 19A is longer than the overall width of at least one of the first clipping portion 17A and the second clipping portion 18A. Specifically, the width of the bottom portion 19A is longer than the overall width of the first clipping portion 17A. An end of the second side Y2 of the bottom 19A protrudes further toward the second side Y2 than the end of the second side Y2 of the first clamping portion 17A. The portion of the bottom 19A protruding further toward the second side Y2 than the first clamping portion 17A constitutes an ear portion 21A (a part of the bottom 19A).

[0022] The width of at least a part of the bottom 19A may be longer than the longer of the width of the first clamping portion 17A and the width of the second clamping portion 18A. The end of the first side Y1 of the bottom 19A may protrude toward the first side Y1 further than the end of the first side Y1 of the first clamping portion 17A. The position of the end of the second side Y2 of the first plate-shaped portion 17aA and the position of the end of the second side Y2 of the bottom 19A may be aligned with each other. In the width direction Y, the end of the first side Y1 of the first clip portion 17A as a whole may be located closer to the first side Y1 or the second side Y2 than the end of the first side Y1 of the second clip portion 18A as a whole. The second plate-shaped portion 18aA may protrude further toward the first side Y1 or the second side Y2 than the bottom portion 19A. The second plate-shaped portion 18aB is similar to the second plate-shaped portion 18aA. The width of the bottom portion 19A may be equal to the overall width of the first clip portion 17A and the overall width of the second clip portion 18A.

[0023] For example, the first plate-shaped portions 17aA, 17bA, the second plate-shaped portions 18aA, 18bA, and the bottom portion 19A are joined to one another by welding. As shown in FIG. 2, the support 16A is disposed so that the first side X1 faces the same direction as the outer side D1, and the second side X2 faces the same direction as the inner side D2. The second clamping portion 18A does not necessarily have to be disposed opposite the first clamping portion 17A in the opposing direction X.

[0024] As shown in FIG. 3, support body 16B has a first clamping portion 17B, a second clamping portion 18B, and a bottom portion 19B that are configured symmetrically with respect to reference plane S1 with respect to first clamping portion 17A, second clamping portion 18A, and bottom portion 19A of support body 16A. The supports 16A and 16B are arranged side by side in the width direction Y such that the ears 21A and 21B are on the outer sides in the width direction Y. In other words, the support 16B is arranged on the first side Y1 with respect to the support 16A.

[0025] 1 and 2, the formwork 26 has a first wall 27, a second wall 28, and a bottom wall 29. The first wall 27, the second wall 28, and the bottom wall 29 are each formed in a flat plate shape. In this example, the first wall 27, the second wall 28, and the bottom wall 29 each have a rectangular shape when viewed in the thickness direction. For example, the first wall 27, the second wall 28, and the bottom wall 29 are formed of reinforced concrete.

[0026] The bottom wall 29 is disposed such that the thickness direction of the bottom wall 29 is along the up-down direction Z. The second wall 28 is disposed opposite the first wall 27 in the opposing direction X. The bottom wall 29 is connected to the lower end of the first wall 27 and the lower end of the second wall 28, respectively. The first wall 27 extends upward from an end of the first side X1 of the bottom wall 29. The second wall 28 extends upward from an end of the second side X2 of the bottom wall 29. The height of the first wall 27 is greater than the height of the second wall 28. In this example, the formwork 26 has a J-shape when viewed in the width direction Y shown in Fig. 2. However, the shape of the formwork is not limited to this. The height of the first wall 27 may be equal to the height of the second wall 28 or may be lower than the height of the second wall 28.

[0027] 1, the multiple formwork 26 is arranged on both sides of the supports 16A, 16B in the width direction Y. In other words, the formwork structure 15 has multiple (two in this embodiment) supports 16A, 16B lined up in the width direction Y. The formwork 26 is arranged on both sides of the supports 16A, 16B in the width direction Y. Here, of the multiple formworks 26, the formwork 26 arranged on the second side Y2 of the supports 16A and 16B is also referred to as formwork 26A. Of the multiple formworks 26, the formwork 26 arranged on the first side Y1 of the supports 16A and 16B is also referred to as formwork 26B. The multiple mold forms 26 are arranged in the facing direction X such that the first wall 27 side relative to the second wall 28 is the first clamping portion 17A side relative to the second clamping portion 18A.

[0028] 1 and 2, ear 21A of support 16A is pressed from above by a part of bottom wall 29 of formwork 26A. Similarly, ear 21B of support 16B is pressed from above by a part of bottom wall 29 of formwork 26B.

[0029] For example, the first plate-like body 31 and the second plate-like body 36 are each formed into a flat plate shape by extrusion molding cement boards. The first plate-like body 31 is disposed such that the thickness direction of the first plate-like body 31 is aligned with the opposing direction X. As shown in Fig. 2, the first plate-like body 31 has a plurality of through holes 32 formed therein, which penetrate the first plate-like body 31 in the width direction Y. The plurality of through holes 32 are disposed at intervals from one another in the up-down direction Z. The second plate-like body 36 is configured similarly to the first plate-like body 31. The second plate-like body 36 has a plurality of through holes 37 formed therein.

[0030] The height of the first plate-like body 31 is greater than the height of the second plate-like body . The first plate-like body 31 is disposed in the first sandwiching portions 17A and 17B of the supports 16A and 16B. More specifically, the first plate-like body 31 is disposed above the bottom portion 19A of the support 16A between the first plate-like portion 17aA and the first plate-like portion 17bA, and above the bottom portion 19B of the support 16B between the first plate-like portion 17aB and the first plate-like portion 17bB. The second plate-shaped body 36 is disposed in the second sandwiching portions 18A, 18B of the supports 16A, 16B. More specifically, the second plate-shaped body 36 is disposed above the bottom portion 19A of the support 16A between the second plate-shaped portion 18aA and the second plate-shaped portion 18bA, and above the bottom portion 19B of the support 16B between the second plate-shaped portion 18aB and the second plate-shaped portion 18bB.

[0031] The height of the first plate-like body 31 is greater than the height of the first clipping portion 17A. The height of the second plate-like body 36 is greater than the height of the second clipping portion 18A. As shown in FIG. 1, the length of the first plate-like body 31 in the width direction Y is equal to the distance between the formwork 26A and the formwork 26B. The first plate-like body 31 is disposed between the formwork 26A and the formwork 26B in the width direction Y. The surface of the first plate-like body 31 facing the first side X1 is substantially flush with the surfaces of the first walls 27 of the multiple formworks 26 facing the second side X2. The length of the second plate-like body 36 in the width direction Y is longer than the distance between the formwork 26A and the formwork 26B. The second plate-like body 36 is disposed on the second side X2 (opposite the first wall 27) of the second wall 28. An end portion of the second plate-like body 36 in the width direction Y contacts the second wall 28 of the formwork 26A, 26B from the second side X2 of the second wall 28.

[0032] 2, in this embodiment, a metal fitting (accessory member) 39 is fixed to the first plate-like body 31 by a plurality of fixing members 40 and a plurality of fastening members 41. The first plate-like body 31, the metal fitting 39, the fixing members 40, and the fastening members 41 constitute an accessory member mounting structure 42.

[0033] The metal fitting 39 has an L-shape when viewed in the width direction Y. The metal fitting 39 has a first piece 39a and a second piece 39b. The first piece 39a and the second piece 39b are each formed in a flat plate shape. The first piece 39a is in contact with the upper surface of the first plate-like body 31 from above this upper surface. The second piece 39b protrudes downward from the end of the first piece 39a on the second side X2. The second piece 39b contacts the surface of the first plate-shaped body 31 facing the second side X2 from the second side X2 of this surface. The metal fitting 39 having the first piece 39a and the second piece 39b is formed of a steel plate, etc. For example, the metal fitting 39 extends over the entire length of the first plate-shaped body 31 in the width direction Y (see FIG. 1).

[0034] The fixing member 40 has a Z-shape when viewed in the width direction Y. The fixing member 40 has a first arm portion 40a and a second arm portion 40b. The first arm portion 40a and the second arm portion 40b are each formed in a flat plate shape. The first arm 40a contacts the second piece 39b of the metal fitting 39 from the second side X2 of the second piece 39b. The first arm 40a and the first plate-shaped body 31 sandwich the second piece 39b in the opposing direction X. The second arm 40b protrudes downward from the first side X1 at the lower end of the first arm 40a. A communication hole (reference number omitted) penetrating in the opposing direction X is formed in the second arm 40b. The second arm portion 40b is in contact with the surface of the first plate-shaped body 31 facing the second side X2 from the second side X2 of this surface. A plurality of (two in this embodiment) fixing members 40 are disposed at both ends in the width direction Y of the first plate-shaped body 31, respectively.

[0035] The fastening member 41 includes a nut 41a and a bolt 41b. The nut 41a is disposed in the through hole 32 of the first plate-like body 31. The head of the bolt 41b (reference number omitted) is in contact with a surface of the second arm portion 40b of the fixing member 40 facing the second side X2 from the second side X2 of this surface. The shaft portion (reference number omitted) of the bolt 41b is fitted into the nut 41a through a communication hole of the fixing member 40 and a communication hole (reference number omitted) of the first plate-like body 31. The head of the bolt 41b and the nut 41a sandwich the second arm portion 40b of the fixing member 40 and the first plate-like body 31 in the opposing direction X. The number of fixing members 40 and the number of fastening members 41 included in the accessory component mounting structure 42 are not limited.

[0036] For example, the beam 46 is made of an H-shaped steel. That is, the beam 46 has a pair of flanges 47, 48 and a web 49 joined to the flanges 47, 48. The flange 47 is disposed higher than the flange 48. The beam 46 extends in the width direction Y along a horizontal plane. An end of the beam 46 in the width direction Y is joined to the main column 10. The beam 46 is disposed between the first wall 27 and the second wall 28 of the formwork 26, and between the first plate-like body 31 and the second plate-like body 36, in the facing direction X. The beam 46 is disposed above the bottom wall 29 of the formwork 26 and the bottoms 19A, 19B of the supports 16A, 16B, and below the upper end of the first wall 27 of the formwork 26.

[0037] The floor 55 is made of concrete, wood, etc. The floor 55 is placed above the second plate-like body 36 and is cast so as to embed the beams 46. In this example, the upper surface 55a of the floor 55 is placed above the upper surface of the first piece 39a of the metal fitting 39.

[0038] The door structure 60 has a door frame 61 and a door body 62. The door frame 61 is formed in a picture frame shape. The door frame 61 is disposed above the metal fitting 39 and is fixed to the metal fitting 39 by welding or the like. For example, the upper surface of the lower frame 61a of the door frame 61 is flush with the upper surface 55a of the floor 55. The door body 62 is connected to the door frame 61 so as to be able to open and close.

[0039] Next, a construction method for constructing the form structure 15 configured as above will be described with emphasis on construction of the supports 16A, 16B, the form 26, and the plate-like bodies 31, 36. Figure 4 is a flowchart showing the construction method S6. First, in a support arrangement step (step S10 shown in Fig. 4), supports 16A and 16B are arranged on ground surface G4 (bottom surface of depression G2) as shown in Fig. 2. At this time, supports 16A and 16B are arranged so that the side of first clamping portion 17A relative to second clamping portion 18A of support 16A and the side of first clamping portion 17B relative to second clamping portion 18B of support 16B face the same direction. When the support arrangement step S10 is completed, the process proceeds to step S11.

[0040] Next, in a formwork arrangement step S11, as shown in FIG. 1, a plurality of formworks 26 are arranged on both sides of the supports 16A, 16B in the width direction Y, so that the first wall 27 side relative to the second wall 28 is the first clamping portion 17A, 17B side relative to the second clamping portion 18A, 18B in the facing direction X. At this time, a plurality of formworks 26 are arranged on both sides of the width direction Y of the supports 16A, 16B as a whole. At this time, the ear portion 21A of the support 16A is pressed by a part of the bottom wall 29 of the formwork 26A. The ear portion 21B of the support 16B is pressed by a part of the bottom wall 29 of the formwork 26B. The formwork arrangement step S11 is performed after the support arrangement step S10. When the formwork placement step S11 is completed, the process proceeds to step S12.

[0041] Next, in a plate-like body arranging step S12, the first plate-like body 31 and the second plate-like body 36 are arranged in the first clamping portions 17A and 17B and the second clamping portions 18A and 18B, respectively. The plate-like body arranging step S12 is performed after the formwork arranging step S11. When the plate-like body arrangement step S12 is completed, all steps of the construction method S6 are completed, and the formwork structure 15 is constructed.

[0042] As described above, in the support 16A of this embodiment, for example, the first plate-like body 31 having a relatively high height is disposed in the first clamping portion 17A, and the second plate-like body 36 having a relatively low height is disposed in the second clamping portion 18A. Then, the floor 55 is disposed above the second clamping portion 18A and the second plate-like body 36, and the door frame 61 and the like are disposed above the first clamping portion 17A and the first plate-like body 31. Therefore, even if the thickness of the floor 55 above the second clamping portion 18A and the second plate-like body 36 is increased, the upper surface 55a of the floor 55 and the upper surface of the lower part of the door frame 61 can be disposed so as to be substantially flush with each other. Therefore, it is possible to easily arrange the floor 55 above the second clamping portion 18A and the door frame 61 and the like above the first clamping portion 17A.

[0043] The height of first plate-shaped portion 17aA is different from the height of first plate-shaped portion 17bA. Therefore, the material cost of first plate-shaped portion 17bA having a smaller height can be reduced compared to the material cost of first plate-shaped portion 17aA having a larger height. The height of the first plate-shaped portion 17bA is lower than the height of the first plate-shaped portion 17aA. For example, of the first plate-shaped portions 17aA and 17bA, the first plate-shaped portion 17aA that is farther from the second clamping portion 18A is disposed closer to the outside D1 of the outline L1 of the formwork structure 15 of the building 1 in a plan view than the first plate-shaped portion 17bA that is closer to the second clamping portion 18A. When concrete for the floor 55 is poured within the outline L1, the lateral pressure of the concrete acts from the inside D2 of the outline L1 toward the outside D1. Therefore, even if the height of the first plate-shaped portion 17bA closer to the second clamping portion 18A is relatively low, the height of the first plate-shaped portion 17aA farther from the second clamping portion 18A is relatively high, so that the first plate-shaped body 31 can be supported against the lateral pressure of the concrete.

[0044] The width of the first clamping portion 17A is shorter than the width of the second clamping portion 18A. Therefore, for example, it is possible to make it easier to bring the formwork 26 or the like closer to the center in the width direction Y of the first clamping portion 17A than to the center in the width direction Y of the second clamping portion 18A. An end of the first side Y1 of the first clamping portion 17A and an end of the first side Y1 of the second clamping portion 18A are aligned in the width direction Y. This makes it easier to bring flat surfaces into contact with the end of the first side Y1 of the first clamping portion 17A and the end of the first side Y1 of the second clamping portion 18A, for example.

[0045] The width of at least a part of the bottom 19A is longer than the overall width of at least one of the first clamping portion 17A and the second clamping portion 18A. Therefore, the position of the support 16A can be stabilized by pressing the ears 21A, which are parts of the bottom 19A that are wider than at least one of the first clamping portion 17A and the second clamping portion 18A, from above the ears 21A with, for example, a formwork 26 or the like. The width of bottom 19A is greater than the width of first clamping portion 17A. For this reason, ears 21A, which are portions of bottom 19A that are greater in width than first clamping portion 17A, can be pressed from above ears 21A by, for example, a formwork 26, etc., to stabilize the position of support 16A.

[0046] The width of at least a part of the bottom 19A may be longer than the longer of the widths of the first clamping portion 17A and the second clamping portion 18A. In this case, when at least a part of the bottom 19A, which is wider than the longer of the widths of the first clamping portion 17A and the second clamping portion 18A, is pressed from above this part by, for example, a formwork 26, it is possible to more reliably prevent the first clamping portion 17A and the second clamping portion 18A from interfering.

[0047] Moreover, the formwork structure 15 of this embodiment has a support body 16A, a first plate-like body 31, and a second plate-like body 36. This allows the first clamping portion 17A to support the first plate-like body 31, and the second clamping portion 18A to support the second plate-like body 36. The formwork structure 15 includes the supports 16A and 16B, a plurality of formwork 26, a first plate-like body 31, and a second plate-like body 36. Therefore, the first clamping portion 17A can support the first plate-like body 31, and the second clamping portion 18A can support the second plate-like body 36. The formwork 26 is disposed on both sides of the supports 16A and 16B in the width direction Y such that the first wall 27 side of the formwork 26 relative to the second wall 28 is the first clamping portion 17A side of the support 16A relative to the second clamping portion 18A in the facing direction X. This allows the first wall 27 and the first clamping portion 17A, and the second wall 28 and the second clamping portion 18A to be brought closer to each other in the facing direction X.

[0048] The supports 16A, 16B are arranged side by side in the width direction Y, and the formwork 26 is disposed on both sides of the supports 16A, 16B as a whole in the width direction Y. Therefore, with respect to the supports 16A, 16B arranged side by side in the width direction Y, the formwork 26 can be disposed on both sides of the supports 16A, 16B as a whole in the width direction Y. The ear 21A of the bottom 19A of the support 16A is pressed by a part of the bottom wall 29 of the formwork 26A. Therefore, the position of the ear 21A of the bottom 19A of the support 16A can be stabilized by the part of the bottom wall 29 of the formwork 26A.

[0049] The height of the first wall 27 is greater than the height of the second wall 28, and the height of the first plate-like body 31 is greater than the height of the second plate-like body 36. This allows the first wall 27 and the first plate-like body 31 of the formwork 26A to efficiently withstand the lateral pressure of the concrete.

[0050] In the construction method S6 of this embodiment, in a support arrangement step S10, the supports 16A and 16B are arranged on the ground G4. Next, in a formwork arrangement step S11, a plurality of formworks 26 are arranged on both sides of the supports 16A and 16B in the width direction Y, so that the first wall 27 side relative to the second wall 28 is the first clamping parts 17A and 17B side relative to the second clamping parts 18A and 18B in the facing direction X. This allows the first wall 27 and the first clamping parts 17A and 17B, and the second wall 28 and the second clamping parts 18A and 18B to approach each other in the facing direction X. Then, in the plate-shaped body arrangement step S12, the first plate-shaped body 31 and the second plate-shaped body 36 can be arranged in the first clamping portions 17A and 17B and the second clamping portions 18A and 18B, respectively.

[0051] In a support arrangement step S10, the supports 16A and 16B are arranged so that the side of the first clamping portion 17A relative to the second clamping portion 18A of the support 16A and the side of the first clamping portion 17B relative to the second clamping portion 18B of the support 16B face in the same direction. Then, in a formwork arrangement step S11, a plurality of formworks 26 are arranged on both sides of the supports 16A and 16B as a whole in the width direction Y. Therefore, in the support arrangement step S10, the supports 16A, 16B are arranged so that the first clamping portions 17A, 17B sides relative to the second clamping portions 18A, 18B face the same direction, so that the orientations of the supports 16A, 16B can be aligned. Then, in the formwork arrangement step S11, a plurality of formworks 26 are arranged on both sides of the supports 16A, 16B as a whole in the width direction Y, so that the plurality of supports 16A, 16B can be sandwiched in the width direction Y by the plurality of formworks 26.

[0052] Ear 21A of support 16A is pressed by part of bottom wall 29 of formwork 26A. Therefore, in formwork placement step S11, ear 21A of bottom 19A of support 16A is pressed by part of bottom wall 29 of formwork 26A, thereby stabilizing the position of support 16A.

[0053] Although one embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and changes, combinations, deletions, etc. of the configuration are also included within the scope that does not deviate from the gist of the present invention.

[0054] (First Modification) For example, in the above embodiment, a support 70A of a first modified example shown in FIG. 5 may have a reinforcing rib 71A as a reinforcing member in addition to the respective components of the support 16A. For example, the reinforcing rib 71A is formed in a flat plate shape with its thickness direction being the width direction Y. The reinforcing rib 71A has a trapezoidal shape when viewed in the width direction Y. The reinforcing rib 71A is disposed on the second side X2 closer to the first plate-shaped portion 17bA, and is joined to the first plate-shaped portion 17bA and the bottom portion 19A. The height of the reinforcing rib 71A gradually decreases toward the second side X2. In the support 70A of the first modified example configured as above, the strength of the first plate-shaped portion 17bA can be increased by the reinforcing rib 71A. The shape of the reinforcing member is not limited thereto, and may be, for example, a straight or curved rod-shaped member that is stretched between the first plate-shaped portion 17bA and the bottom portion 19A. The reinforcing member may be joined to any one of the first plate-shaped portion 17aA, the second plate-shaped portion 18aA, and the second plate-shaped portion 18bA, instead of the first plate-shaped portion 17bA. A plurality of reinforcing members may be disposed spaced apart from each other in the width direction Y.

[0055] (Second Modification) In the facing direction X, the first plate-like body 31 may be disposed on the opposite side (first side X1) of the first wall 27 to the second wall 28, and may be in contact with the first wall 27 from the first side X1 of the first wall 27. By configuring as in this second modified example, the gap between the first wall 27 of the formwork 26 and the first plate-like body 31 can be efficiently sealed.

[0056] The formwork 26 on the first side Y1 or the second side Y2 of the supports 16A, 16B as a whole may not be arranged. It is not necessary to press the ears 21A, 21B of the supports 16A, 16B with a part of the bottom wall 29 of the formwork 26A, 26B.

[0057] (Third Modification) As in a support 75A of a third modified example shown in FIG. 6, the width of the first clip portion 17A and the width of the second clip portion 18A may each be equal to the width of the bottom portion 19A. By configuring support body 75A of the third modified example, the width of first clip portion 17A, the width of second clip portion 18A, and the width of bottom portion 19A can be made to coincide with one another.

[0058] (Additional Note) (1) Aspect 1 of the present disclosure is A support for constructing a foundation for a building, comprising: A first clamping part having a pair of opposing first plate-shaped parts, a second clamping part having a pair of opposing second plate-shaped parts arranged opposite the first clamping part, and a ground support connected to a lower end of the first clamping part and a lower end of the second clamping part, In a horizontal position and a bottom portion on which the base is disposed, Each of the pair of first plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, and each of the pair of second plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, The first clip portion is a support body having a height greater than a height of the second clip portion.

[0059] In this disclosure, for example, a first plate-shaped body with a relatively high height is placed in a first clamping section, and a second plate-shaped body with a relatively low height is placed in a second clamping section. Then, a floor is placed above the second clamping section and the second plate-shaped body, and a door frame or the like is placed above the first clamping section and the first plate-shaped body. Therefore, even if the floor above the second clamping section and the second plate-shaped body becomes thicker, the upper surface of the floor and the upper surface of the lower part of the door frame can be placed so as to be substantially flush with each other. Therefore, it is possible to easily place a floor above the second clamping portion and place a door frame or the like above the first clamping portion.

[0060] (2) A second aspect of the present disclosure may be a support body as described in (1), in which the height of one of the pair of first plate-shaped portions is different from the height of the other first plate-shaped portion. In this disclosure, the material cost of the shorter first plate-shaped portion of the pair of first plate-shaped portions can be reduced more than the material cost of the taller first plate-shaped portion.

[0061] (3) Aspect 3 of the present disclosure may be a support as described in (1) or (2), in which the height of the first plate-shaped portion of the pair of first plate-shaped portions that is closer to the second clamping portion is lower than the height of the first plate-shaped portion that is farther from the second clamping portion. In this disclosure, for example, of the pair of first plate-shaped parts, the first plate-shaped part farther from the second clamping part is disposed closer to the outside of the outline of the foundation of the building in a plan view than the first plate-shaped part closer to the second clamping part. When concrete is poured within the outline, the lateral pressure of the concrete acts from the inside to the outside of the outline. Therefore, even if the height of the first plate-shaped portion closer to the second clamping portion is relatively low, the height of the first plate-shaped portion farther from the second clamping portion is relatively high, so that the first plate-shaped body can be supported against the lateral pressure of the concrete.

[0062] (4) A fourth aspect of the present disclosure may be the support according to any one of (1) to (3), in which the width of the first clip portion is shorter than the width of the second clip portion. In this disclosure, for example, it is possible to make it easier to bring a formwork or the like closer from the width direction to the center in the width direction of the first clamping part than to the center in the width direction of the second clamping part.

[0063] (5) A fifth aspect of the present disclosure may be a support described in any one of (1) to (4), in which, in the width direction of the first clamping portion, the first side end of the first clamping portion and the first side end of the second clamping portion are aligned. In this disclosure, for example, it is possible to easily bring the flat surfaces into contact with the first end of the first clip portion and the first end of the second clip portion.

[0064] (6) A sixth aspect of the present disclosure may be a support according to any one of (1) to (5), in which the width of the first clip portion and the width of the second clip portion are each equal to the width of the bottom portion. In this disclosure, the width of the first clip portion, the width of the second clip portion, and the width of the base can be consistent with each other.

[0065] (7) A seventh aspect of the present disclosure may be a support described in any one of (1) to (6), in which the width of at least a portion of the bottom portion is greater than the width of at least one of the first clamping portion and the second clamping portion. In this disclosure, the portion of the bottom that is wider than the width of at least one of the first clamping portion and the second clamping portion can be pressed down from above this portion, for example by a formwork, to stabilize the position of the support.

[0066] (8) An eighth aspect of the present disclosure may be the support according to any one of (1) to (7), in which the width of the bottom portion is greater than the width of the first clip portion. In this disclosure, the portion of the bottom that is wider than the width of the first clamping portion can be pressed from above this portion with, for example, a formwork or the like, thereby stabilizing the position of the support.

[0067] (9) A ninth aspect of the present disclosure may be a support described in any one of (1) to (8), in which the width of at least a portion of the bottom portion is longer than the longer of the width of the first clamping portion and the width of the second clamping portion. In this disclosure, it is possible to more reliably prevent the first clamping portion and the second clamping portion from interfering when at least a portion of the bottom portion, which has a width greater than the longer of the widths of the first clamping portion and the second clamping portion, is pressed down from above this portion by, for example, a formwork or the like.

[0068] (10) A tenth aspect of the present disclosure may be a support as described in any one of (1) to (9), comprising reinforcing members joined to either one of the pair of first plate-shaped portions and the pair of second plate-shaped portions, and to the bottom portion. In this disclosure, the reinforcing member can increase the strength of either one of the pair of first plate-shaped portions or the pair of second plate-shaped portions. (11) An eleventh aspect of the present disclosure may be a support described in any one of (1) to (10), in which the respective widths of the pair of first plate-shaped portions or the respective widths of the pair of second plate-shaped portions are equal to each other.

[0069] ( 12 Aspect 11 of the present disclosure includes (1) to ( 11 ) a first plate-like body arranged in the first clamping portion, and a second plate-like body arranged in the second clamping portion. In this disclosure, the first clamping portion can support the first plate-shaped body, and the second clamping portion can support the second plate-shaped body.

[0070] ( 13 Aspect 12 of the present disclosure includes (1) to ( 11 a formwork having a first wall, a second wall arranged opposite the first wall, and a bottom wall connected to a lower end of the first wall and a lower end of the second wall, respectively; a first plate-like body arranged in the first clamping portion, and a second plate-like body arranged in the second clamping portion, wherein the formwork is arranged on both sides of the first clamping portion in a width direction relative to the support, such that in a direction in which the pair of first plate-like portions face each other, the first wall side relative to the second wall is the first clamping portion side relative to the second clamping portion.

[0071] In this disclosure, the first plate-like body is supported by the first clamping portion, and the second plate-like body is supported by the second clamping portion. Formwork is arranged on both sides of the width direction of the support body such that, in the direction in which the pair of first plate-like bodies face each other, the first wall side of the formwork facing the second wall is the first clamping portion side of the support body facing the second clamping portion. This allows the first wall and the first clamping portion, and the second wall and the second clamping portion to be brought closer to each other in the facing directions.

[0072] ( 14 Aspects of the present disclosure 14 The support body is provided with a plurality of supports arranged in the width direction of the first clamping portion, and the formwork is disposed on both sides of the plurality of supports as a whole in the width direction, ( 13 The support structure may be as described above. In this disclosure, for a plurality of supports arranged in the width direction, a formwork can be disposed on each of both sides in the width direction of the plurality of supports as a whole.

[0073] ( 15 Aspects of the present disclosure 15 A part of the bottom portion is pressed by a part of the bottom wall. 13 ) or ( 14 The support structure may be as described above. In this disclosure, a portion of the bottom wall of the formwork can stabilize the position of a portion of the bottom of the support.

[0074] ( 16 Aspects of the present disclosure 16 The height of the first wall is higher than the height of the second wall, and the height of the first plate-like body is higher than the height of the second plate-like body, ( 13 )from( 15 The support structure may be any one of the support structures described in any one of the above. In this disclosure, the lateral pressure of the concrete can be efficiently withstood by the first wall and the first plate-like body of the formwork.

[0075] ( 17 Aspects of the present disclosure17 In a direction in which the pair of first plate-shaped portions face each other, the first plate-shaped body is disposed on the side opposite to the second wall with respect to the first wall, and is in contact with the first wall. ( 13 )from( 16 The support structure may be any one of the support structures described in any one of the above. In this disclosure, the gap between the first wall of the formwork and the first plate-like body can be efficiently sealed.

[0076] ( 18 Aspects of the present disclosure 18 From (1) to ( 11 a formwork arrangement step of arranging a plurality of formworks, each having a first wall, a second wall arranged opposite the first wall, and a bottom wall connected to a lower end of the first wall and a lower end of the second wall, on both sides of the width direction of the first clamping portion relative to the support, such that in the opposing direction in which the pair of first plate-like portions oppose each other, the first wall side relative to the second wall is the first clamping portion side relative to the second clamping portion; and a plate-like body arrangement step of arranging a first plate-like body and a second plate-like body in the first clamping portion and the second clamping portion, respectively.

[0077] In this disclosure, in a support arrangement step, a support is arranged on the ground. Next, in a formwork arrangement step, a plurality of formworks are arranged on both sides of the support in the width direction, such that the first wall side relative to the second wall is the first clamping side relative to the second clamping part in the opposing direction. This allows the first wall and the first clamping part, and the second wall and the second clamping part to be closer to each other in the opposing direction. Then, in the plate-shaped body arranging step, the first plate-shaped body and the second plate-shaped body can be arranged in the first clamping portion and the second clamping portion, respectively.

[0078] ( 19 Aspects of the present disclosure 19In the support arrangement step, the plurality of supports are arranged such that the first clamping portion side relative to the second clamping portion faces the same direction, and in the formwork arrangement step, the plurality of formworks are arranged on both sides of the plurality of supports as a whole in the width direction. ( 18 The support structure may be constructed in a manner similar to that described above. In this disclosure, in the support arrangement step, the multiple supports are arranged so that the first clamping section side relative to the second clamping section faces the same direction, so that the orientation of the multiple supports can be aligned. Then, in the formwork arrangement step, multiple formworks can be arranged on both sides in the width direction of the multiple supports as a whole, so that the multiple supports can be sandwiched in the width direction by the multiple formworks.

[0079] ( 20 Aspects of the present disclosure 20 The formwork arrangement step is performed after the support arrangement step, and in the formwork arrangement step, a part of the bottom of at least one of the plurality of supports is pressed by a part of the bottom wall. 18 ) or ( 19 The support structure may be constructed in a manner similar to that described above. In this disclosure, in the formwork positioning step, a portion of the bottom of at least one of the multiple supports can be pressed by a portion of the bottom wall of the formwork to stabilize the position of at least one of the multiple supports. [Explanation of symbols]

[0080] 15 Formwork structure (support structure) 16A,16B,70A,75A Support 17A, 17B First clamping part 17aA, 17bA, 17aB, 17bB First plate-shaped portion 18A, 18B Second clamping part 18aA, 18bA, 18aB, 18bB Second plate-shaped portion 19A,19B bottom 21A, 21B Ears (part of the bottom) 26 Formwork 27 1st wall 28 Second wall 29 Bottom Wall 31 First plate-shaped body 36 Second plate-shaped body G4 ground S6 Construction method (construction method of support structure) S10 Support placement step S11 Formwork placement step S12 Plate placement step X Opposite direction (opposite direction) Y Width direction Y1 1st side

Claims

1. A support for constructing a foundation for a building, comprising: A first clamping portion having a pair of opposing first plate-shaped portions; a second clamping portion having a pair of opposing second plate-shaped portions disposed opposite the first clamping portion; a bottom portion connected to a lower end of the first clamping portion and a lower end of the second clamping portion, the bottom portion being placed horizontally on the ground; Equipped with Each of the pair of first plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, Each of the pair of second plate-shaped portions is connected to the bottom portion in a position extending upward from the bottom portion, A support, wherein the height of the first clamping portion is greater than the height of the second clamping portion.

2. The support body according to claim 1 , wherein a height of one of the pair of first plate-shaped portions is different from a height of the other of the pair of first plate-shaped portions.

3. The support body according to claim 1 , wherein the height of the first plate-shaped portion of the pair of first plate-shaped portions that is closer to the second clamping portion is lower than the height of the first plate-shaped portion that is farther from the second clamping portion.

4. The support of claim 1 , wherein the width of the first jaw portion is less than the width of the second jaw portion.

5. The support body according to claim 4 , wherein an end of the first clamping portion on a first side coincides with an end of the second clamping portion on the first side in a width direction of the first clamping portion.

6. The support of claim 1 , wherein the width of the first clip and the width of the second clip are each equal to the width of the base.

7. The support according to claim 1 , wherein a width of at least a portion of the bottom portion is greater than a width of at least one of the first clip portion and the second clip portion.

8. The support of claim 1 , wherein the width of the base is greater than the width of the first clip.

9. The support according to claim 1 , wherein a width of at least a portion of the bottom portion is greater than the greater of a width of the first clip portion and a width of the second clip portion.

10. The support according to claim 1 , further comprising reinforcing members respectively joined to one of the pair of first plate-shaped portions and the pair of second plate-shaped portions, and to the bottom portion.

11. The support body according to claim 1 , wherein the widths of the pair of first plate-shaped portions or the widths of the pair of second plate-shaped portions are equal to each other.

12. A support according to any one of claims 1 to 11, A first plate-shaped body disposed in the first clamping portion; A second plate-like body disposed in the second clamping portion; A support structure comprising:

13. A support according to any one of claims 1 to 11, a formwork having a first wall, a second wall disposed opposite the first wall, and a bottom wall connected to a lower end of the first wall and a lower end of the second wall, A first plate-shaped body disposed in the first clamping portion; A second plate-like body disposed in the second clamping portion; Equipped with A support structure in which the formwork is arranged on both sides of the width direction of the first clamping portion relative to the support body, so that in the direction in which the pair of first plate-shaped portions face each other, the first wall side relative to the second wall is the first clamping portion side relative to the second clamping portion.

14. A plurality of the supports are arranged in a width direction of the first clamping portion, The support structure according to claim 13 , wherein the formwork is disposed on both sides of the plurality of supports as a whole in the width direction.

15. The support structure of claim 13 , wherein a portion of the base is restrained by a portion of the bottom wall.

16. The height of the first wall is greater than the height of the second wall, The support structure according to claim 13 , wherein the height of the first plate-like body is greater than the height of the second plate-like body.

17. The support structure according to claim 13 , wherein in a direction in which the pair of first plate-shaped portions face each other, the first plate-shaped body is positioned on the opposite side of the first wall from the second wall and in contact with the first wall.

18. A support arrangement step of arranging the support according to any one of claims 1 to 11 on the ground; a form arranging step of arranging a plurality of formworks, each having a first wall, a second wall disposed opposite the first wall, and a bottom wall connected to a lower end of the first wall and a lower end of the second wall, on both sides of the width direction of the first clamping portion relative to the support body, such that the first wall side relative to the second wall is the first clamping portion side relative to the second clamping portion in an opposing direction in which the pair of first plate-like portions oppose each other; a plate-shaped body arrangement step of arranging a first plate-shaped body and a second plate-shaped body in the first clamping portion and the second clamping portion, respectively; A construction method for a support structure comprising:

19. In the support arrangement step, the plurality of supports are arranged such that the first clamping portion side relative to the second clamping portion faces the same direction; The support structure construction method according to claim 18 , wherein in the formwork arranging step, a plurality of the formworks are arranged on both sides of the plurality of supports as a whole in the width direction.

20. The formwork placement step is performed after the support placement step, The support structure construction method according to claim 18 , wherein in the formwork placement step, a portion of the bottom of at least one of the plurality of supports is pressed down by a portion of the bottom wall.

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