Structure

Abstract

To provide a structure capable of saving labor and shortening a process in construction at a construction site.SOLUTION: A structure 1 includes a column 2 formed of a precast member, a horizontal member 3 in which a beam portion 31 and a floor slab portion 32 are integrally formed of a precast member and which is disposed on an upper side of the column 2, and a vertical joint portion 4 that joins the column 2 and the horizontal member 3. The vertical joining portion 4 includes a vertical insertion hole 22 recessed downward from a 2u portion of the upper surface of the column 2, a through-hole 35 penetrating the lateral member 3 in the vertical direction, a main reinforcement 21 of the column 2 inserted into a lower portion of the vertical insertion hole 22, a joint reinforcement 41 inserted into an upper portion of the vertical insertion hole 22 and the through-hole 35, and a filling material 43 filling the vertical insertion hole 22 and the through-hole 35.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a structure. [Background technology]

[0002] Conventionally, there have been structures that have a space below the deck for maintenance, etc. Patent Document 1 listed below discloses a configuration in which a column made of a precast member is joined to a deck. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-139811 Summary of the Invention [Problem to be solved by the invention]

[0004] It is difficult to construct and integrate all of the columns, beams, and deck slabs using precast materials, so there is a need to reduce the labor required for construction at the construction site and shorten the construction process.

[0005] Therefore, the present invention has been made in consideration of the above circumstances, and provides a structure that enables labor saving and shortening of construction work at a construction site. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention employs the following means. In other words, the structure of the present invention comprises a column made of precast members, a beam portion and a deck portion integrally made of precast members, a horizontal member placed on the upper side of the column, and a vertical joint that joins the column and the horizontal member, and the vertical joint has a vertical insertion hole recessed downward from the top surface of the column, a through hole that penetrates the horizontal member in the vertical direction, a main reinforcement of the column that is inserted into the lower part of the vertical insertion hole, a joint reinforcement that is inserted into the upper part of the vertical insertion hole and the through hole, and a filler material that is filled into the vertical insertion hole and the through hole.

[0007] In a structure configured in this manner, main reinforcement is inserted into the lower part of the vertical insertion hole of the column. At the construction site, a horizontal member is installed above the column. Filler material is injected into the through hole of the horizontal member, passing through the through hole and filling the vertical insertion hole of the column. Joint reinforcing bars are inserted into the through hole of the horizontal member and reach the vertical insertion hole of the column. The joint reinforcing bars and filler material join the horizontal member, which has an integrated beam section and deck section, to the column. This makes it possible to reduce labor and shorten the construction process at the construction site.

[0008] In the structure according to the present invention, an upper portion of the joint reinforcing bar may protrude upward from the through hole.

[0009] In a structure constructed in this way, the upper part of the joint reinforcing bar protrudes upward from the through hole, thereby increasing the adhesion between the concrete poured above the cross member and the upper part of the joint reinforcing bar.

[0010] In the structure according to the present invention, the upper portion of the joint reinforcing bar may be bent along the upper surface of the horizontal member.

[0011] In a structure constructed in this way, the upper part of the joint rebar is bent along the upper surface of the cross member, which further increases the adhesion between the concrete poured above the cross member and the upper part of the joint rebar.

[0012] In addition, the structure of the present invention may include a first horizontal joint that joins adjacent horizontal members, and the first horizontal joint may have a horizontal insertion hole that is recessed inward from the end face of one of the horizontal members facing the other horizontal member, a reinforcing bar that protrudes from the end face of the other horizontal member facing the one horizontal member and is inserted into the horizontal insertion hole, and a filler material that is filled into the horizontal insertion hole.

[0013] In a structure constructed in this way, at the construction site, filler material is injected into the horizontal insertion hole formed in the end face of one of the adjacent horizontal members, and the rebar protruding from the end face of the other horizontal member is inserted. The rebar and filler material join the horizontal members, each of which has an integrated beam section and deck section. This reduces the labor required for construction at the construction site and shortens the construction process.

[0014] In addition, the structure of the present invention may include a second horizontal joint that joins adjacent horizontal members, and the second horizontal joint may have loop-shaped reinforcing bars protruding from the end face of one horizontal member facing the other horizontal member and from the end face of the other horizontal member facing the one horizontal member, and a concrete section in which the reinforcing bars are embedded.

[0015] In a structure constructed in this way, concrete is poured at the construction site around the loop-shaped reinforcing bars protruding from the end faces of adjacent horizontal members, embedding and anchoring the reinforcing bars in the concrete. This joins the horizontal members, which are integrated with the beam and deck slab. This reduces the labor required for construction at the construction site and shortens the construction process. [Effects of the Invention]

[0016] The structure according to the present invention makes it possible to reduce the labor required for construction at a construction site and shorten the construction process. [Brief explanation of the drawings]

[0017] [Figure 1] 8 is a vertical cross-sectional view of the structure, taken along line II in FIG. 7. [Figure 2]FIG. 1 is a diagram illustrating a method for constructing a structure. [Figure 3] FIG. 2 is a diagram showing a method for constructing a structure, showing a subsequent step to that shown in FIG. [Figure 4] FIG. 4 is a diagram showing a method for constructing a structure, showing a step subsequent to that shown in FIG. [Figure 5] FIG. 5 is a diagram showing a method for constructing a structure, showing a step subsequent to that shown in FIG. [Figure 6] FIG. 6 is a diagram showing a method for constructing a structure, showing a step subsequent to that shown in FIG. 5. [Figure 7] FIG. 7 is a diagram showing a method for constructing a structure, showing a step subsequent to that shown in FIG. 6. [Figure 8] 8 is a diagram showing a method for constructing a structure, showing a step subsequent to that shown in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0018] A structure according to an embodiment of the present invention will now be described with reference to the drawings. 1, a structure 1 according to this embodiment is installed in, for example, a tunnel. Note that the location where the structure 1 is installed is not limited to a tunnel, and it can be set appropriately on an ordinary road or the like.

[0019] As shown in Fig. 8, the structure 1 includes a column 2, a horizontal member 3, a vertical joint 4, a first horizontal joint 5, and a second horizontal joint 6. As shown in Fig. 1, the horizontal member 3 has a beam portion 31 and a deck portion 32 that are integrated together.

[0020] The axial direction in which the beam portion 31 extends is referred to as the axial direction Y. The horizontal direction substantially perpendicular to the axial direction Y is referred to as the width direction X. The direction substantially perpendicular to the axial direction Y and the width direction X is referred to as the up-down direction Z.

[0021] The column 2 is made of precast members. The column 2 has main reinforcements 21, ties (not shown), and a column concrete portion 28. The main reinforcements 21 extend in the vertical direction Z. Multiple main reinforcements 21 are arranged at intervals in the width direction X and the axial direction Y. In this embodiment, 12 main reinforcements 21 are arranged along the outer edge of the column 2, but the arrangement positions and number of the main reinforcements 21 can be set as appropriate. In the cross-sectional view shown in Figure 1, two main reinforcements 21 are shown. The ties are formed in a ring shape in a plan view so as to surround the multiple main reinforcements 21. Multiple ties are arranged at intervals in the vertical direction Z. The column concrete portion 28 has the main reinforcements 21 and ties embedded therein. The column concrete portion 28 is formed in a rectangular column shape. The shape of the column 2 is not limited to a rectangular column shape and may be a cylindrical shape, and can be set as appropriate.

[0022] The horizontal member 3 is made up of a beam portion 31 and a deck portion 32, which are integrally formed from precast members.

[0023] The beam portion 31 is disposed below the deck slab portion 32. The beam portion 31 is disposed above the column 2. The beam portion 31 is formed so that the width direction X gradually becomes shorter as it extends downward. The beam portion 31 is formed over substantially the entire length of the deck slab portion 32 in the axial direction Y. The shape of the beam portion 31 may be rectangular in cross section perpendicular to the axial direction Y, and can be set as appropriate.

[0024] The deck slab portion 32 is formed in a plate shape. The plate surface of the deck slab portion 32 faces the vertical direction Z.

[0025] The horizontal member 3 has axial reinforcing bars 33 (see FIG. 4), widthwise reinforcing bars (not shown), and horizontal concrete portions .

[0026] 4, the axial reinforcing bars 33 extend in the axial direction Y. A plurality of the axial reinforcing bars 33 are arranged at intervals in the width direction X and the up-down direction Z. The axial reinforcing bars 33 are arranged in both the beam portion 31 and the deck slab portion 32.

[0027] The width direction reinforcing bars extend in the width direction X. A plurality of width direction reinforcing bars are arranged at intervals in the axial direction Y and the up-down direction Z. The width direction reinforcing bars are arranged in both the beam portion 31 and the deck slab portion 32.

[0028] Axial reinforcing bars 33 and widthwise reinforcing bars are embedded in the horizontal concrete portion 38. The horizontal concrete portion 38 is formed in a plate shape.

[0029] As shown in Figure 1, the vertical joint 4 joins the column 2 and the horizontal member 3. The vertical joint 4 has a vertical insertion hole 22, a through hole 35, a main reinforcement 21, a joint reinforcement 41, and a filler material 43.

[0030] The vertical insertion hole 22 is formed at the upper end of the pillar 2. The vertical insertion hole 22 is a hole recessed downward from the upper surface 2u of the pillar 2. The vertical insertion hole 22 is formed at a position corresponding to the main reinforcement 21. A sleeve joint 23 is provided in the vertical insertion hole 22. The sleeve joint 23 is formed in a cylindrical shape with its axis directed in the vertical direction Z.

[0031] The through hole 35 is formed in the horizontal member 3. The through hole 35 is a hole that penetrates the horizontal member 3 in the vertical direction Z. The through hole 35 is formed across the beam portion 31 and the deck portion 32. The through hole 35 is formed at a position corresponding to the vertical insertion hole 22. A sheath tube 36 is provided in the through hole 35. The sheath tube 36 is formed in a cylindrical shape with its axial direction aligned with the vertical direction Z.

[0032] An upper end 21u of the main reinforcement 21 is inserted into the sleeve joint 23. The main reinforcement 21 is inserted up to the middle of the sleeve joint 23 in the vertical direction.

[0033] The joint reinforcing bar 41 has a first straight reinforcing bar portion 41a, a curved reinforcing bar portion 41b, and a second straight reinforcing bar portion 41c.

[0034] The first straight reinforcing bar portion 41a extends in the vertical direction Z. The first straight reinforcing bar portion 41a is inserted into the sheath tube 36 and the sleeve joint 23. The lower end portion 41d of the first straight reinforcing bar portion 41a is inserted up to the middle of the sleeve joint 23 in the vertical direction Z. Inside the sleeve joint 23, the lower end portion 41d of the first straight reinforcing bar portion 41a is positioned above the upper end portion 21u of the main reinforcement 21.

[0035] The curved reinforcing bar portion 41b is formed continuously with the upper end portion of the first straight reinforcing bar portion 41a. The curved reinforcing bar portion 41b is curved at approximately a right angle. The curved reinforcing bar portion 41b protrudes upward from the sheath tube 36 of the horizontal member 3. The joint reinforcing bar 41 is bent at the curved reinforcing bar portion 41b.

[0036] The second straight reinforcing bar portion 41c is formed continuously with the tip of the curved reinforcing bar portion 41b. The second straight reinforcing bar portion 41c is arranged along and above the upper surface 3u of the horizontal member 3.

[0037] The filler material 43 is filled inside the sleeve joint 23 of the column 2 and inside the sheath tube 36 of the cross member 3.

[0038] In the sleeve joint 23, the filler 43 is filled between the inner peripheral surface of the sleeve joint 23 and the main reinforcement 21 and the joint reinforcing bar 41. In the sleeve joint 23, the filler 43 is filled between the upper end 21u of the main reinforcement 21 and the lower end 41d of the joint reinforcing bar 41.

[0039] In the sheath tube 36 , the filler 43 is filled between the inner peripheral surface of the sheath tube 36 and the joint reinforcing bar 41 .

[0040] The column 2 and the cross member 3 are joined by inserting the main reinforcement 21 and the joint reinforcing bar 41 into the sleeve joint 23 and filling it with filler material 43, and by inserting the joint reinforcing bar 41 into the sheath tube 36 and filling it with filler material 43.

[0041] As shown in Figure 4, the horizontal concrete portion 38 of the horizontal member 3 has a protruding portion 39 that protrudes in the axial direction Y. The protruding portion 39 is formed at a location where the horizontal member 3 is located adjacent to it. The end face of the protruding portion 39 facing the axial direction Y is referred to as end face 39a. The end face of the horizontal concrete portion 38 facing the axial direction Y in the portion other than the protruding portion 39 is referred to as end face 38a.

[0042] As shown in Fig. 5, the first horizontal joint 5 joins the end faces 39a of adjacent horizontal members 3. As shown in Fig. 4, the first horizontal joint 5 has a horizontal insertion hole 51, a reinforcing bar 52, and a filler material (not shown). On the opposing sides of adjacent horizontal members 3, one horizontal member 3 has the horizontal insertion hole 51 formed therein, and the other horizontal member 3 has the reinforcing bar 52 protruding therefrom.

[0043] The horizontal insertion hole 51 is formed in the end surface 39a of the horizontal concrete portion 38 of the horizontal member 3. The horizontal insertion hole 51 is a hole recessed inward from the end surface 39a. A sleeve joint (not shown) is provided in the horizontal insertion hole 51. The sleeve joint is formed in a cylindrical shape with its axis aligned in the axial direction Y.

[0044] The reinforcing bars 52 are portions of the axial reinforcing bars 33 that protrude from the end faces 39a of the horizontal members 3. The reinforcing bars 52 protrude in the axial direction Y from the end faces 39a of the horizontal concrete portions 38 of the horizontal members 3 toward the adjacent horizontal members 3. Multiple reinforcing bars 52 are arranged at intervals in the width direction X and the up-down direction Z. The reinforcing bars 52 are inserted into the sleeve joints of the horizontal insertion holes 51.

[0045] The filler material is filled inside the sleeve joint of the horizontal insertion hole 51. The filler material is filled between the inner peripheral surface of the sleeve joint and the axial reinforcing bar 33.

[0046] 7, the second horizontal joint 6 joins the end faces 38a of adjacent horizontal members 3. The second horizontal joint 6 has a reinforcing bar 61 (see FIG. 4) and a concrete portion 62.

[0047] As shown in FIG. 4, the reinforcing bars 61 are portions of the axial reinforcing bars 33 that protrude from the end face 38a of the cross member 3. The reinforcing bars 61 are arranged at intervals in the width direction X. The reinforcing bars 61 have a pair of straight portions 61a and a loop portion 61b. The straight portion 61a extends in the axial direction Y. The pair of straight portions 61a are arranged spaced apart in the up-down direction Z. The loop portion 61b connects the ends of the pair of straight portions 61a. The loop portion 61b is formed in a loop shape that curves so as to bulge toward the adjacent cross member 3.

[0048] In adjacent horizontal members 3, the reinforcing bars 61 protruding from one horizontal member 3 and the reinforcing bars 61 protruding from the other horizontal member 3 are arranged alternately in the width direction X. Note that a plurality of reinforcing bars 61 of one horizontal member 3 may be arranged in the width direction X, and next to them a plurality of reinforcing bars 61 of the other horizontal member 3 may be arranged in the width direction X. The arrangement order of the reinforcing bars 61 of one horizontal member 3 and the reinforcing bars 61 of the other horizontal member 3 in the width direction X can be set as appropriate.

[0049] 7, the concrete portion 62 is concrete filled between the end faces 38a of adjacent horizontal members 3. Reinforcement bars 61 are embedded in the concrete portion 62. The upper surfaces of the joint concrete portions 48 are disposed on the same plane as the upper surfaces of the horizontal members 3.

[0050] Next, a method for constructing the structure 1 will be described. First, the pillar construction process is carried out. As shown in Figure 2, a pillar 2 is erected on an installation surface 11. The pillar 2 is fixed to the installation surface 11 by a fixing means. A plurality of pillars 2 are erected at intervals in the axial direction Y. A vertical insertion hole 22 is exposed on the top surface 2u of the pillar 2. A sleeve joint 23 (see Figure 1) is provided in the vertical insertion hole 22.

[0051] Next, the cross member installation process is carried out. As shown in Figure 3, the horizontal member 3 is installed on the upper side of the column 2. Because no reinforcing bars or other components protrude from the upper surface 2u of the column 2, the horizontal member 3 can be slid horizontally along the upper surface 2u of the column 2 and installed in the desired position.

[0052] Next, the first horizontal joint construction step is carried out. As shown in Figures 4 and 5, a horizontal member 3 is installed adjacent to the horizontal member 3 already placed in the axial direction Y. If there is no column 2 below the horizontal member 3 to be installed, temporary materials such as shoring are installed on the installation surface 11 to support the horizontal member 3. Filler is injected into the sleeve joint of the horizontal insertion hole 51 of one horizontal member 3 into which the reinforcing bar 52 protruding from the other horizontal member 3 will be inserted. The reinforcing bar 52 of one horizontal member 3 is inserted into the sleeve joint of the other horizontal member 3. This completes the first horizontal joint 5. The horizontal members 3 are installed sequentially in the axial direction Y, and the first horizontal joint 5 is completed using the above procedure.

[0053] Next, the vertical joint construction step is carried out. As shown in Fig. 5, through holes 35 are formed on the upper surface 3u of the horizontal member 3 at positions corresponding to the pillars 2. Sheath tubes 36 (see Fig. 1) are provided inside the through holes 35. In the illustrated example, a plurality of through holes 35 are arranged in a square shape in a plan view along the outer edge of the structure 1. The arrangement positions of the through holes 35 can be set as appropriate.

[0054] As shown in Figure 1, the sheath tube 36 of the through hole 35 is positioned at a position corresponding to the sleeve joint 23 of the vertical insertion hole 22 of the pillar 2. A filler material 43 is injected into the sheath tube 36 from the upper side of the horizontal member 3. The filler material 43 passes through the inside of the sheath tube 36 and reaches the inside of the sleeve joint 23.

[0055] The joint reinforcing bar 41 is inserted into the sheath tube 36 from the top of the horizontal member 3. The joint reinforcing bar 41 passes through the inside of the sheath tube 36 and reaches the inside of the sleeve joint 23. As shown in FIG. 6 , in the multiple joint reinforcing bars 41, some of the second straight reinforcing bar portions 41c extend to one side of the width direction X, some extend to the other side of the width direction X, and some extend to one side of the axial direction Y. The second straight reinforcing bar portions 41c of the joint reinforcing bar 41 may extend in a direction intersecting the width direction X and the axial direction Y, or all of the second straight reinforcing bar portions 41c may face the same direction. The extension direction of the second straight reinforcing bar portions 41c of the joint reinforcing bar 41 can be set as appropriate. This completes the vertical joint 4. The horizontal members 3 and columns 2, which are placed one after the other, are joined at the vertical joint 4 using the procedure described above.

[0056] Next, the second horizontal joint construction step is carried out. As shown in Fig. 7, concrete is poured between the end faces 38a of adjacent horizontal members 3. Reinforcing bars 61 (see Fig. 6) protruding from the end faces 38a are embedded in the concrete to form concrete portions 62. As a result, the reinforcing bars 61 are fixed to the concrete portions 62, and the second horizontal joint 6 is constructed.

[0057] As shown in Figure 6, the lower end of the end face 38a of the horizontal member 3 is provided with a protruding portion 34 that protrudes toward the adjacent horizontal member 3. The protruding portion 34 is part of the horizontal concrete portion 38 of the horizontal member 3. The tips of the protruding portions 34 of adjacent horizontal members 3 abut against each other. This means that the poured concrete is received by the protruding portion 34, so there is no need to install a formwork below the reinforcing bar 61. The protruding portion 34 is positioned below the concrete portion 62. If there is no protruding portion 34, a formwork is installed along the underside of the horizontal member 3 below the reinforcing bar 61, and concrete is poured.

[0058] Next, the pavement construction process is carried out. As shown in Fig. 7, a filler material is poured into an insertion hole 71 formed so as to recess downward from the upper surface 3u of the horizontal member 3. As shown in Fig. 8, a reinforcing bar 72 is inserted into the insertion hole 71. Concrete (not shown) is poured above the horizontal member 3, and the reinforcing bar 72 is embedded in the concrete. A paving material is then placed above the concrete, completing the paved road.

[0059] In the structure 1 configured in this manner, main reinforcement 21 is inserted into the lower part of the vertical insertion hole 22 of the column 2. At the construction site, the horizontal member 3 is installed above the column 2. By injecting filler material 43 into the through hole 35 of the horizontal member 3, the filler material 43 passes through the through hole 35 and is filled into the vertical insertion hole 22 of the column 2. The joint reinforcing bar 41 is inserted into the through hole 35 of the horizontal member 3 and reaches the vertical insertion hole 22 of the column 2. The joint reinforcing bar 41 and filler material 43 join the horizontal member 3, whose beam portion 31 and deck portion 32 are integrated, to the column 2. This makes it possible to reduce labor and shorten the construction process at the construction site.

[0060] Additionally, the upper portion of the joint reinforcing bar 41 protrudes upward from the through hole 35. This increases the adhesive force between the concrete poured on the upper side of the horizontal member 3 and the upper portion of the joint reinforcing bar 41.

[0061] Additionally, the upper portion of the joint reinforcing bar 41 is bent along the upper surface 3u of the horizontal member 3. This further increases the adhesive strength between the concrete poured above the horizontal member 3 and the upper portion of the joint reinforcing bar 41.

[0062] Furthermore, at the construction site, filler material is injected into the horizontal insertion hole 51 formed in the end face 39a of one of the adjacent horizontal members 3, and reinforcing bars 52 protruding from the end face 39a of the other horizontal member 3 are inserted. The reinforcing bars 52 and filler material join the horizontal members 3, each having an integrated beam portion 31 and deck portion 32. This makes it possible to reduce the labor required for construction at the construction site and shorten the process.

[0063] Furthermore, at the construction site, concrete is poured around the loop-shaped reinforcing bars 61 protruding from the end faces 38a of adjacent horizontal members 3, and the reinforcing bars 61 are embedded and fixed in the concrete portions 62. This joins the horizontal members 3, each having an integrated beam portion 31 and deck portion 32. This makes it possible to reduce the labor required for construction at the construction site and shorten the process.

[0064] The shapes and combinations of the components shown in the above-described embodiment are merely examples, and various modifications can be made based on design requirements, etc., within the scope of the present invention.

[0065] For example, in the embodiment described above, the joint rebar 41 has a shape bent at the curved rebar portion 41b, but this is not limited to this. The joint rebar 41 may be a T-head construction rebar with an expanded diameter at the portion protruding upward from the horizontal member 3. Alternatively, the joint rebar 41 may not protrude upward from the horizontal member 3, or may be a normal rebar with an unprocessed portion protruding upward from the horizontal member 3.

[0066] In addition, in the embodiment described above, adjacent horizontal members 3 are joined to each other by the first horizontal joint portion 5 and the second horizontal joint portion 6, but this is not limited to this. The method of joining adjacent horizontal members 3 to each other can be set as appropriate.

[0067] The Sustainable Development Goals (SDGs) are 17 international goals adopted at the United Nations Summit in September 2015. The structure 1 according to this embodiment can contribute to achieving one of the 17 SDGs, for example, goal 9, "Build resilient infrastructure, promote inclusive and sustainable industrialization, and foster innovation." [Explanation of symbols]

[0068] 1 structure 2 pillars 3 Lateral member 4 Vertical joint 5 1st lateral joint 6 Second lateral joint 21 Main reinforcement 22 Vertical insertion hole 31 Beam section 32 Floor slab section 35 through holes 41 Reinforced concrete joints 43 Filling material 51 Side insertion hole 52, 61, 72 Reinforced concrete 62 Concrete Section 71 Insertion hole

Claims

1. Columns made of precast materials, The beam portion and the deck portion are integrally formed by precast members, and a horizontal member is placed on the upper side of the column; a vertical joint that joins the column and the horizontal member, The vertical joint is a vertical insertion hole recessed downward from the top surface of the pillar; a through hole that passes through the horizontal member in the vertical direction; A main reinforcement of the column inserted into the lower part of the vertical insertion hole; A joint reinforcing bar inserted into the upper portion of the vertical insertion hole and the through hole; A structure having a filler material filled in the vertical insertion hole and the through hole.

2. The structure according to claim 1 , wherein an upper portion of the joint reinforcing bar protrudes upward from the through hole.

3. 3. The structure according to claim 2, wherein the upper portion of the joint reinforcing bar is bent along the upper surface of the horizontal member.

4. a first horizontal joint portion that joins adjacent horizontal members together; The first horizontal joint is a lateral insertion hole recessed inward from an end surface of one of the lateral members facing the other lateral member; A reinforcing bar protruding from an end surface of the other horizontal member facing the one horizontal member and inserted into the horizontal insertion hole; The structure according to claim 1 or 2, further comprising a filler material filled in the lateral insertion hole.

5. a second horizontal joint portion that joins adjacent horizontal members together; The second horizontal joint is a loop-shaped reinforcing bar protruding from an end surface of one of the horizontal members facing the other horizontal member and an end surface of the other horizontal member facing the one horizontal member; 3. The structure according to claim 1, further comprising a concrete portion in which the reinforcing bars are embedded.

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