Structural slit member and wall structure construction method

Abstract

To provide a structural slit member capable of reducing the burden of construction management during concrete pouring and capable of preventing bending and displacement from occurring in a structural slit.SOLUTION: Provided is a structural slit member 2 for arranging a structural slit along a side edge of a wall skeleton 12 of a building 1. The structural slit member 2 includes: a band-shaped structural slit 3 arranged on the side edge of the wall skeleton; a truss portion 4 formed in an elongated shape by a base plate and truss reinforcement on an inner side of the wall skeleton along the structural slit; and a fastener 6 for connecting an intermediate support member 61 passed through a through hole of the structural slit. The fastener 6 is arranged on an extension line of a through hole 31 of the structural slit 3, a plurality of the fasteners 6 are attached at intervals in a longitudinal direction of the truss portion 4, and the fasteners 6 are attached across the intermediate support member 61 and an upper end reinforcement 421 of the truss reinforcement.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a structural slit member that is arranged along the side edges of a wall body of a structure such as a building, and a method for constructing a wall body adjacent to a column body using the same. [Background technology]

[0002] As disclosed in Patent Documents 1 and 2, it is known that structural slits are provided in reinforced concrete buildings to separate the edges between the columns and beams and the walls, and they serve to prevent brittle fracture of the building in the event of an earthquake.

[0003] Structural slits were included as a method of earthquake-resistant design in the 1981 Building Standards Act's "New Earthquake Resistance Standards," and are widely used in apartment buildings, mainly made of reinforced concrete. General structural slits are only able to maintain their shape and fixation up to a certain height (for example, about 1.0m-1.5m) against the lateral pressure of the concrete, so a construction method is used in which concrete is poured in sequence on both sides of the structural slit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2007-186925 A [Patent Document 2] JP 2012-67495 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, if the structural slits are installed improperly or if construction management during concrete pouring is not carried out properly, the structural slits may become bent or misaligned, requiring correction after construction.

[0006] Therefore, the present invention aims to provide a structural slit member that can reduce the burden of construction management during concrete pouring and prevent bending or misalignment of the structural slits, and a method of constructing a wall structure adjacent to a column structure using the same. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the structural slit member of the present invention is a structural slit member for arranging a structural slit along the side edge of a wall body of a structure, and comprises a band-shaped structural slit arranged on the side edge of the wall body, a truss section formed in a long shape by a base plate and truss reinforcement on the inside side of the wall body along the structural slit, and a fixing means for connecting an intermediate support material passed through a through hole of the structural slit, wherein the fixing means is a fixing device arranged on an extension line of the through hole of the structural slit, and a plurality of the fixing devices are attached at intervals in the longitudinal direction of the truss section, and the fixing device is attached across the intermediate support material and the upper end reinforcement of the truss reinforcement.

[0008] Here, the fixing device may have a main body and a pressing member inserted into the main body, and the upper end reinforcing bar and the intermediate supporting material are fixed to the main body by the pressing member at the intersection where the intermediate supporting material and the upper end reinforcing bar intersect. The main body may have a pair of clamping parts and a connecting part that connects the pair of clamping parts, the pressing member is inserted into the connecting part, and the pair of clamping parts are formed with a fitting part into which either the upper end reinforcing bar or the intermediate supporting material is fitted, and when either the upper end reinforcing bar or the intermediate supporting material is fitted into the fitting part, the pressing force of the pressing member is applied to either the upper end reinforcing bar or the intermediate supporting material, thereby fixing the upper end reinforcing bar and the intermediate supporting material to the main body. Furthermore, the fixing device may further include a restricting part that restricts the axial movement of the intermediate supporting material relative to the structural slit.

[0009] The invention for a method of constructing a wall structure is a method of constructing a wall structure adjacent to a column structure using any of the structural slit members described above, characterized in that it comprises the steps of: arranging the structural slit member at a position that is the boundary with the column structure; connecting an intermediate support member inserted from the column structure side to the fixing means; and continuously filling concrete inside the formwork of the wall structure in which the truss section is arranged and reinforcement is applied, up to the height of the wall structure.

[0010] Yet another invention for a method of constructing a wall structure is a method of constructing a wall structure adjacent to a column structure using any of the structural slit members described above, characterized in that it comprises the steps of: manufacturing a column unit in which the structural slit member is attached to the reinforcement of the column structure; hoisting the column unit and positioning it so that the structural slit member is located at the side edge of the wall structure; connecting an intermediate support material inserted from the column structure side to the fixing means; and continuously filling concrete inside the formwork of the wall structure up to the height of the wall structure. Effect of the Invention

[0011] The structural slit member of the present invention thus constructed includes a truss section formed in a long shape by a base plate and truss reinforcement arranged along the structural slit, and a fixing means for connecting an intermediate support member passed through the through hole of the structural slit. In other words, the truss section added to increase the rigidity of the structural slit can be supported by an intermediate support member connected to the fixing means from the outside of the wall body, and can be integrated with the concrete of the wall body that is filled later through the truss reinforcement. This makes it possible to withstand the large lateral pressure of concrete, and the burden of construction management during concrete pouring can be reduced by pouring a high amount of concrete at once. Furthermore, since the structural slit is supported by the highly rigid truss section, bending and displacement can be prevented.

[0012] In particular, if multiple fixtures, which serve as fixing means for intermediate supports, are attached at intervals along the longitudinal direction of the truss section, the structural slits arranged on the side edges of the wall body can be supported without bias in the height direction. Furthermore, if the fixtures are attached across the intermediate supports and the upper end bars of the truss bars, it becomes possible to prevent the fixtures from rotating around the upper end bars, etc., making it easier to connect the intermediate supports.

[0013] In addition, at the intersection where the upper end reinforcement and the intermediate support material intersect, the upper end reinforcement and the intermediate support material are fixed to the main body portion by the pressing member, so that the upper end reinforcement can be fixed more firmly to the intermediate support material than if the upper end reinforcement and the intermediate support material were simply attached to the fixing device.

[0014] Furthermore, the main body portion has a pair of clamping portions, and when either the upper end reinforcement or the intermediate support material is engaged with the fitting portion formed in this clamping portion, a pressing force is applied to the other of the upper end reinforcement or the intermediate support material by the pressing member, so that the upper end reinforcement can be firmly fixed to the intermediate support material and the structural slit member can be stably supported by the intermediate support material.

[0015] In addition, since a restricting member is provided to restrict the axial movement of the intermediate support material relative to the structural slit, pouring of concrete can be started not only from the column side but also from the wall side.

[0016] In addition, in the invention of the method for constructing a wall structure, after the structural slit members are positioned and the intermediate support members inserted from the column structure side are connected to the fixing means, concrete is continuously filled up to the height of the wall structure.

[0017] In this way, by using structural slit members in which the highly rigid truss section is supported by intermediate supports, the height of the wall structure can be constructed with a single pour of concrete, thereby reducing the burden of construction management during the pouring of concrete.

[0018] Furthermore, if the reinforcement of the column structure is arranged using ground assembly or the like and a column unit is produced to which structural slit members are attached, workability will be improved, making it possible to construct the column structure and wall structure more efficiently. [Brief description of the drawings]

[0019] [Figure 1] FIG. 11 is an explanatory diagram of the process of constructing a wall structure adjacent to a column structure using the structural slit member according to the first embodiment. [Diagram 2] 1 is an explanatory diagram showing a schematic configuration of a wall skeleton and a column skeleton of a building in which a structural slit according to a first embodiment is arranged. FIG. [Diagram 3] FIG. 2 is an enlarged perspective view for explaining the configuration of the structural slit member according to the first embodiment. [Figure 4] 1A is a front view of the fixture, and FIG. 1B is a side view of the fixture. [Diagram 5] (a) is an enlarged view showing the area around the intersection, and (b) is a view taken along the arrow A in (a). [Figure 6] FIG. 2 is a perspective view illustrating the overall configuration of the structural slit member according to the first embodiment. [Figure 7] This is an explanatory diagram showing an enlarged view of the vicinity of the boundary with the column body. [Figure 8] FIG. 11 is an explanatory diagram showing an example of use of the structural slit member according to the first embodiment when constructing a wall structure perpendicular to a column structure. [Figure 9] FIG. 1 is an explanatory diagram illustrating a conventional concrete pouring sequence for columns and walls. [Figure 10] FIG. 11 is an enlarged perspective view for explaining the configuration of a structural slit member according to a second embodiment. [Figure 11] 10(a) is a side view of a restriction portion according to a second embodiment, and FIG. 10(b) is a partially enlarged view of an intermediate support member according to the second embodiment. [Figure 12] FIG. 11 is an explanatory diagram showing an example of the use of structural slit members when constructing a column skeleton perpendicular to a wall skeleton in the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] (First embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a diagram for explaining a process for constructing a column skeleton 11 and an adjacent wall skeleton 12 of a building 1, which is a structure, using a structural slit member 2 according to the first embodiment. Fig. 2 is an explanatory diagram showing a schematic configuration of the wall skeleton 12 and column skeleton 11 of the building 1 in which a structural slit 3 is arranged.

[0021] In order to prevent brittle fracture, such as shear failure, of columns and beams in buildings 1 such as buildings and apartment buildings when a large earthquake occurs, structural slits are placed at the boundaries between columns and walls, as shown in Figure 2. The structural slit 3 shown in the figure is a member that separates the edge between the column body 11 and the wall body 12, and is also called a vertical slit, perpendicular slit, earthquake-resistant slit, etc.

[0022] The structural slits 3 are arranged on the side edge 12a of the wall body 12, which is the boundary with the column body 11. The wall body 12 is a body called a miscellaneous wall, such as a sleeve wall, a waist wall, a hanging wall, etc., which are different from the main structural members. On the other hand, the structural slits arranged for the purpose of cutting the edge between the beam body 13 and the wall body 12 are called horizontal slits 15 (see Figure 2).

[0023] As shown in Figures 3 and 6, the structural slit member 2 of the first embodiment comprises a band-shaped structural slit 3, a truss section 4 formed in an elongated shape along the structural slit 3, and a fastener 6 serving as a fixing means attached to the truss section 4.

[0024] The structural slit 3 is a rectangular plate-like member made of a material such as polystyrene foam, urethane foam, polystyrene foam, phenol foam, etc. The structural slit 3 is formed in an elongated shape with a length approximately equal to the height of the wall skeleton 12.

[0025] 7, the width of the structural slit 3 is narrower than the wall thickness (approximately 150 mm to 230 mm) of the wall body 12, and a frame material 32 is attached to each of the two edge portions in the wall thickness direction of the wall body 12. The frame material 32 has grooves formed on both sides, and one groove has an edge of the structural slit 3 fitted into it, while a rectangular parallelepiped joint rod 33 fixed to the wall formwork 72 is fitted into the other groove.

[0026] As shown in Figure 7, a partition formed by the above-mentioned structural slit 3, frame material 32, and joint rod 33 is placed at the boundary between a pair of wall formwork 72, 72 and the column body 11, and the flow of concrete filled to construct the wall body 12 and the column body 11 is blocked by this partition.

[0027] The truss section 4 is formed in an elongated shape on the inner side of the wall structure 12 along the longitudinal direction (vertical direction) of the structural slit 3. The truss section 4 according to the first embodiment is formed by a base plate 41 and truss bars 42, as shown in FIG.

[0028] The base plate 41 is a band-like member that is in close contact with one side of the structural slit 3, and is formed from a deck plate, a corrugated sheet, or the like. The width and length of the base plate 41 are approximately the same as those of the structural slit 3, and by joining the base plate 41 to one side of the structural slit 3 with adhesive, screws, double-sided tape, or the like, the truss section 4 and the structural slit 3 can be treated as a single unit.

[0029] On the other hand, the truss muscles 42 are formed in an isosceles triangle shape in a plan view by an upper end muscle 421, a pair of lower end muscles 422, and a pair of wavy lattice muscles 423 connecting them (see FIG. 7). There are various types of truss muscles 42, and the upper end muscle 421 is placed near the apex of the isosceles triangle formed by the pair of lattice muscles 423, but various positions of the lower end muscles 422 and shapes of the lattice muscles 423 can be used.

[0030] In short, the truss section 4 may be formed as a highly rigid, long member by a base plate 41 and truss bars 42, the base of which forms an isosceles triangle in plan view (see FIG. 7) and is joined to one surface of the base plate 41. For example, a truss section 4 made of a base plate 41 formed from a thin galvanized steel plate and truss bars 42 formed by combining thin reinforcing bars (421, 422, 423) is not only highly rigid but also lightweight, making it easy to handle.

[0031] 7, one wall surface of the wall structure 12 is a first wall surface 121, and the other wall surface opposite thereto is a second wall surface 122. The truss section 4 is disposed inside the wall structure 12 between the first wall surface 121 and the second wall surface 122. The truss section 4 and the wall structure 12 are integrated by filling the area around the truss reinforcement 42 with concrete poured in place to form the wall structure 12.

[0032] 3, a fastener 6 serving as a fastening means for an intermediate support member 61 is attached to the truss section 4. A through hole 31 is drilled at the position of the structural slit 3 and the base plate 41 facing this fastener 6. In other words, the fastener 6 of the intermediate support member 61 is disposed on an extension line of the through hole 31 of the structural slit 3 and the base plate 41.

[0033] Fig. 4(a) is a front view of the fixing device 6, and Fig. 4(b) is a side view of the fixing device 6. The fixing device 6 is configured to have a main body 600 and a fixing screw 620 as a pressing member. The main body 600 is formed in a U-shape when viewed from the side, and is configured to have a pair of clamping parts 601 and a connecting part 610 that connects the clamping parts 601 to each other. An insertion hole 611 through which the fixing screw 620 is inserted is formed in the connecting part 610.

[0034] Each clamping portion 601 is formed in a flat plate shape, and a fitting portion 602 is formed in the clamping portion 601, penetrating the clamping portion 601 in the thickness direction. The fitting portion 602 is configured to have a guide groove 602a and an elongated hole 602b having arc-shaped ends. The elongated hole 602b is formed at a position overlapping with the fixing screw 620 in a front view, and extends along the insertion direction of the fixing screw 620. The guide groove 602a is formed integrally with the elongated hole 602b.

[0035] FIG. 5(a) is an enlarged view of the intersection X between the intermediate support material 61 and the upper end reinforcing bar 421, and FIG. 5(b) is a view taken along the arrow A in FIG. 5(a). The intermediate support material 61 extends horizontally, and the upper end reinforcing bar 421 extends vertically. The fixing device 6 is attached to fix the two members arranged almost perpendicular to each other. The intermediate support material 61 and the upper end reinforcing bar 421 are connected by the fixing device 6 with one of them being arranged between a pair of clamping parts 601 and the other being inserted into the long hole 602b and crossed. Specifically, the intermediate support material 61 is arranged between a pair of clamping parts 601 extending horizontally, and the upper end reinforcing bar 421 is fitted into the fitting part 602.

[0036] The upper end reinforcing bar 421 is guided to the long hole 602b by the guide groove 602a. The intermediate support material 61 is disposed between the pair of clamping parts 601 in contact with the upper end reinforcing bar 421. As the fixing screw 620 moves in the insertion direction, the intermediate support material 61 presses the upper end reinforcing bar 421 along the extension direction of the long hole 602b, and the upper end reinforcing bar 421 abuts against one end of the long hole 602b. That is, the fixing screw 620 applies a pressing force in a direction perpendicular to the axial direction of the intermediate support material 61 (the direction of the white arrow in FIG. 5(b)), and the intermediate support material 61 and the upper end reinforcing bar 421 are firmly fixed to the fixing device 6 in a state where the intermediate support material 61 is in contact with the upper end reinforcing bar 421.

[0037] In addition, the fixing device 6 may be fixed so as to sandwich the intermediate support material 61 and the upper end reinforcing bar 421 with the clamping portion 601 extending in the vertical direction. In other words, with the upper end reinforcing bar 421 disposed between the pair of clamping portions 601 and the intermediate support material 61 engaged with the engaging portion 602, a pressing force may be applied by the fixing screw 620 in a direction perpendicular to the axial direction of the upper end reinforcing bar 421, so that the intermediate support material 61 and the upper end reinforcing bar 421 are firmly fixed to the fixing device 6 with the upper end reinforcing bar 421 in contact with the intermediate support material 61.

[0038] As can be seen from the position of the intermediate support member 61 shown in Fig. 6, a plurality of fasteners 6 are attached at intervals in the longitudinal direction of the truss section 4. For example, the fasteners 6 are attached to the truss section 4 at intervals of about 200 mm to 400 mm in the vertical direction.

[0039] An end of an intermediate support member 61 inserted from the column body 11 side is connected to the fixing device 6, and the structural slit member 2 can be supported by this intermediate support member 61. The intermediate support member 61 can be formed from a rod-shaped material such as a reinforcing bar, a separator, or a fully threaded screw. In addition, the intermediate support member 61 is not limited to being formed from a single rod-shaped material, and may be formed by combining a plurality of rod-shaped materials, such as having a joint in between.

[0040] It is preferable that the spacing of the fasteners 6 in the lower part of the structural slit member 2, where the lateral pressure of the concrete is greater, be closer than in the upper part. For example, Fig. 6 shows an example in which the spacing in the lower part of the structural slit member 2 is 200 mm, and the spacing from the middle part to the upper part is 400 mm.

[0041] The structural slit member 2 according to the first embodiment is connected to the column structure 11 by an intermediate support member 61 that is passed through a fastener 6. In a conventional earthquake-resistant structure with a structural slit, it was necessary to place anti-sway bars to prevent the wall that is separated from the column from collapsing, but by using the structural slit member 2 in which the wall structure 12 is connected to the column structure 11 via the intermediate support member 61, it is possible to give the intermediate support member 61 the function of an anti-sway bar.

[0042] Next, a method for constructing a wall structure 12 adjacent to a column structure 11 using the structural slit member 2 according to the first embodiment will be described. In the first embodiment, as shown in Fig. 1 or Fig. 8, a case in which a wall structure 12 is constructed adjacent to a column structure 11 will be described.

[0043] The column reinforcement 111 of the column body 11 is formed by arranging tie bars as shear reinforcement bars so as to surround the outside of the main reinforcement bars extending in the vertical direction. In addition, intermediate tie bars as shear reinforcement bars are laid across the tie bars so as to separate the inner space of the tie bars, which are approximately rectangular in plan view (see FIG. 1).

[0044] Before installing the structural slit member 2 in a predetermined position, a wall form 72 that forms one wall surface of the wall structure 12 is assembled. For example, the upper wall form 72 in the figure that is continuous with the column form 71 shown in Fig. 1 is installed first. The formwork (71, 72) is made up of shoring 7 that is assembled using single pipes and battens, sheathing, separators 52, etc.

[0045] Then, column reinforcement bars 111 are assembled inside the column formwork 71, and wall reinforcement bars 123 are assembled inside the wall formwork 72. In addition, structural slit members 2 are installed on both side edges of the wall reinforcement bars 123.

[0046] Here, there are two methods for arranging the structural slit member 2. The first method is to first arrange the structural slit member 2 at a position that will be the boundary with the column skeleton 11, and then assemble the wall reinforcement 123.

[0047] The second method is to assemble column units (not shown) by assembling them on the ground. For example, the column reinforcement 111 is assembled in a work yard. If the column reinforcement 111 is assembled on the ground, which can be carried out in a large space such as a work yard, the column reinforcement 111 can be assembled efficiently.

[0048] Then, the structural slit members 2 are attached to the positions where the ground-assembled column reinforcement 111 bounds the wall structure 12. The column unit produced in this way (structural slit member 2 in the case of the first method described above) is lifted by a hoist, crane, or the like, and installed in a prescribed position. The structural slit member 2, whose rigidity has been increased by the truss section 4, is lightweight, so there is only a small increase in weight when attached to the column reinforcement 111, and it can be lifted and installed as a column unit together with the column reinforcement 111 by a crane, or the like.

[0049] The wall reinforcement 123 is placed on the floor surface formed on the beam structure 13 of the lower floor through a horizontal slit 15. In other words, the wall structure 12 and the floor surface are separated by the horizontal slit 15 (see FIG. 2).

[0050] For the structural slit member 2 arranged at a position that is the boundary with the column body 11, as shown in Figure 1, one end of the intermediate support member 61 protruding from the column reinforcement 111 side through the through hole 31 (see Figure 3) to the wall body 12 side is connected to the fixing device 6.

[0051] In the building 1 shown in Fig. 1, the other end of the intermediate support member 61 is also connected to the fixing device 6 of the structural slit member 2 for the wall body 12 constructed on the opposite side of the column body 11. In short, the intermediate support member 61 maintains the distance between the structural slit members 2, 2 on both sides of the column body 11.

[0052] On the other hand, in the building 1A shown in Figure 8, wall structures 12 are provided in two mutually perpendicular directions relative to the column structure 11, and one end of an intermediate support member 61, the other end of which is connected to a fixing device 6, is fixed to a support structure 7 supporting a column formwork 71.

[0053] After assembling the column reinforcement 111 and the wall reinforcement 123 in this manner, the remaining column formwork 71 and wall formwork 72 are installed. Here, the wall formworks 72, 72 are connected by separators 52, as shown in Figures 1 and 8. In this way, the structure is ready to be filled with cast-in-place concrete.

[0054] Here, the order of concrete pouring for the columns, walls, and beams in a conventional building a1 will be described with reference to Fig. 9. In this building a1, structural slits a2 are interposed between the columns and the walls on both sides.

[0055] First, pour the concrete into the bottom of the column. Since concrete is a fluid when filled, a lateral pressure according to the pouring height acts on the structural slit a2, as shown in the partial image in the center of the wall on the left side of Figure 9.

[0056] The structural slit a2 itself is a low-rigidity plate material made of polystyrene foam, etc., so if a large lateral pressure of concrete is applied, it may bend or shift. Therefore, first pour concrete to about 1 / 3 of the height of the column.

[0057] Next, concrete is poured into the lower parts of the left and right walls of the pillars to the same height. Then, concrete is poured into the middle parts of the pillars and the left and right walls, and then concrete is poured into the upper parts of the pillars and the left and right walls. Finally, concrete is poured into the beams, and the concrete pouring process involves 10 steps.

[0058] In contrast, the structural slit member 2 according to the first embodiment is provided with a highly rigid truss section 4, and the truss section 4 is supported by an intermediate support member 61 connected from the column body 11 side.

[0059] The intermediate support material 61 is inserted into the through hole 31 shown in Figure 6, and is placed not only at the vertical ends of the truss section 4 but also in the middle, so that the structural slit member 2 can be supported evenly along its entire length.

[0060] Therefore, as shown in Figure 2, concrete for the column skeleton 11 can be poured continuously at once from the slab line (SL) to the bottom end of the beam (approximately 2.5 m). Concrete can also be continuously filled into the wall skeletons 12 on the left and right sides of the column skeleton 11 up to the height of the wall skeletons 12.

[0061] Finally, concrete is poured for the beam structure 13, but the concrete pouring process can be completed in four steps. In short, six steps can be reduced compared to the conventional concrete pouring process.

[0062] Next, the operation of the structural slit member 2 according to the first embodiment and the method of constructing a wall skeleton 12 adjacent to a column skeleton 11 using the structural slit member 2 will be described.

[0063] The structural slit member 2 of the first embodiment configured in this manner comprises a truss section 4 formed in an elongated shape by a base plate 41 and truss bars 42 arranged along the structural slit 3, and a fixing device 6 for an intermediate support material 61 arranged on an extension line of the through hole 31 of the structural slit 3.

[0064] In other words, the truss section 4 added to the structural slit 3 to increase rigidity can be supported by intermediate supports 61 connected to the fixing devices 6 from the outside of the wall structure 12, and can be integrated with the concrete of the wall structure 12 that is filled later via the truss reinforcement 42.

[0065] If the concrete can withstand the large lateral pressure, it will be possible to pour concrete continuously to a height of more than 1.5 m in one go, reducing the burden of construction management during concrete pouring.

[0066] Furthermore, because the structural slits 3 are supported by the highly rigid truss section 4, bending or misalignment can be prevented. In particular, if multiple fixing devices 6 for the intermediate support member 61 are attached at intervals along the longitudinal direction of the truss section 4, the structural slits 3 arranged on the side edge 12a of the wall structure 12 can be supported without bias in the height direction.

[0067] Furthermore, if the fixing device 6 is configured to be attached across the intermediate support material 61 and the upper end reinforcement 421 of the truss reinforcement 42, the fixing device 6 can be prevented from rotating around the upper end reinforcement 421 or the like, making it easier to connect the intermediate support material 61.

[0068] Furthermore, at the intersection X where the upper end reinforcement 421 and the intermediate support material 61 intersect, the upper end reinforcement 421 and the intermediate support material 61 are fixed to the main body portion by the fixing screw 620 which serves as a pressing member, so that the upper end reinforcement 421 can be fixed more firmly to the intermediate support material 61 than in a state where the upper end reinforcement 421 and the intermediate support material 61 are simply attached to the fixing device 6.

[0069] Furthermore, the main body portion has a pair of clamping portions 601, and when either the upper end reinforcement 421 or the intermediate support material 61 is engaged with the engaging portion 602 formed in this clamping portion 601, a pressing force is applied to the other of the upper end reinforcement 421 or the intermediate support material 61 by the fixing screw 620 acting as a pressing member, so that the upper end reinforcement 421 can be firmly fixed by the intermediate support material 61 and the structural slit member 2 can be stably supported by the intermediate support material 61.

[0070] Moreover, in the method for constructing the wall structure according to the first embodiment, a lightweight and easy-to-handle structural slit member 2 is arranged, and the end of the intermediate support member 61 inserted from the column structure 11 side is connected to the fixing device 6, and then concrete is continuously filled up to the height of the wall structure 12.

[0071] In this way, by using a structural slit member 2 in which a lightweight, highly rigid truss section 4 is supported by an intermediate support member 61, the height of the wall structure 12 can be constructed by pouring concrete in one go, thereby reducing the burden of construction management during concrete pouring.

[0072] Furthermore, if the column structure 11 is reinforced by ground assembly or the like and a column unit 20 is produced with the structural slit member 2 attached, workability is improved compared to working in a narrow space with formwork close together, and the column structure 11 and wall structure 12 can be constructed more efficiently.

[0073] Second embodiment Next, a structural slit member 102 according to a second embodiment will be described with reference to Fig. 10 to Fig. 12. Note that, in the following, configurations different from the first embodiment will be mainly described, and components common to the first embodiment will be given the same reference numerals and detailed descriptions thereof will be omitted.

[0074] In the first embodiment, the concrete for the pillars is poured first, and then the concrete for the wall is poured, whereas in the second embodiment, the concrete for the wall is poured first, and then the concrete for the pillars is poured.

[0075] Fig. 10 is a diagram showing the state in which the restricting portion 8 is attached to the structural slit 3, Fig. 11(a) is a side view of the restricting portion 8, and Fig. 11(b) is a partially enlarged view of the intermediate support material 61. As shown in Fig. 10, the restricting portion 8 is attached to the structural slit 3 on the opposite side of the base plate 41 to the fixing device 6. In other words, the restricting portion 8 is attached to the column reinforcement 111 side of the base plate 41.

[0076] 11(a), the restricting portion 8 is configured by integrating a holding plate 81 and a nut 82. The restricting portion 8 is formed with a male screw portion 8a penetrating in the thickness direction of the holding plate 81. The restricting portion 8 is provided in the structural slit 3 such that the male screw portion 8a and the through hole 31 overlap with respect to the axial direction of the intermediate support member 61.

[0077] 11(b), a female screw portion 61a that screws into the male screw portion 8a is formed in a portion of the intermediate support member 61 along the axial direction. With the intermediate support member 61 passing through the through hole 31 and the male screw portion 8a, the male screw portion 8a screws into the female screw portion 61a. This prevents the intermediate support member 61 from moving relative to the substrate 41.

[0078] Furthermore, if there is a gap between the end of the wall formwork 72 and the end of the intermediate support material 61, the distance to the end of the wall formwork 72 can be secured by providing an extension member 62 as shown in Figure 10 and connecting the intermediate support material 61 and the extension member 62 with a connector 9 (see Figure 12).

[0079] In this way, the structural slit member 102 according to the second embodiment is provided with a restricting portion 8 that restricts the axial movement of the intermediate support member 61 relative to the structural slit 3. The restricting portion 8 is formed with a male thread portion 8a, and the intermediate support member 61 having a female thread portion 61a is inserted into the male thread portion 8a, whereby the male thread portion 8a and the female thread portion 61a are screwed together to restrict the axial movement of the intermediate support member 61. This makes it possible to suppress the structural slit 3 from protruding toward the column skeleton 11. Therefore, it is possible to withstand the lateral pressure of concrete from the wall side, and concrete pouring can be started not only from the column side but also from the wall side.

[0080] Each embodiment of the present invention has been described in detail above with reference to the drawings, but the specific configuration is not limited to these embodiments, and design changes that do not deviate from the gist of the present invention are included in the present invention.

[0081] For example, the materials and shapes of the structural slit 3 and the frame material 32 described in the above embodiment are merely examples and are not limited thereto, and the present invention can be applied to structural slits of various shapes. [Explanation of symbols]

[0082] 1, 1A: Buildings (structures) 11: Pillar frame 111: Column reinforcement 12:Wall frame 12a: Side edge 2,102: Structural slit members 20: Pillar unit 3: Structural slit 31:Through hole 4, 4A, 4B: Truss section 41: Substrate 42: Truss bar 421: Upper end muscle 422: Lower end reinforcement 43,44: Steel plate (substrate) 6,6A: Fixture (fixing means) 600: Main body 601: Sandwiching part 602: Fitting part 602a: Guide groove 602b: Long hole 610:Connection part 611: Through hole 620: Fixing screw 61: Intermediate support material 61a: Female thread 72: Wall formwork (formwork) 8: Regulation Department 8a: Male thread X: Intersection

Claims

1. A structural slit member for arranging a structural slit along a side edge of a wall body of a structure, A band-shaped structural slit arranged on a side edge of the wall body; A truss section formed in an elongated shape by a base plate and a truss bar on the inner side of the wall body along the structural slit; and a fastening means for connecting an intermediate support member passed through the through hole of the structural slit; The fixing means is a fixing device arranged on an extension line of the through hole of the structural slit, A plurality of the fasteners are attached at intervals in the longitudinal direction of the truss section, A structural slit member characterized in that the fixing device is attached across the intermediate support material and the upper end bar of the truss bar.

2. The fixing tool has a main body and a pressing member inserted into the main body, A structural slit member as described in claim 1, characterized in that the upper end reinforcement and the intermediate support material are fixed to the main body portion by the pressing member at the intersection where the intermediate support material and the upper end reinforcement intersect.

3. The main body portion has a pair of clamping portions and a connecting portion that connects the pair of clamping portions to each other, The pressing member is inserted through the connecting portion, The pair of clamping parts are formed with fitting parts into which either the upper end reinforcement or the intermediate support material is fitted, The structural slit member described in claim 2, characterized in that when either the upper end reinforcement or the intermediate support material is engaged with the engaging portion, a pressing force from the pressing member is applied to the other of the upper end reinforcement or the intermediate support material, thereby fixing the upper end reinforcement and the intermediate support material to the main body portion.

4. The structural slit member according to claim 1, further comprising a restricting portion that restricts axial movement of the intermediate support member relative to the structural slit.

5. A method for constructing a wall structure adjacent to a column structure using the structural slit member according to any one of claims 1 to 4, comprising the steps of: A step of arranging the structural slit member at a position that is a boundary with the column body; A step of connecting an intermediate support member inserted from the column body side to the fixing means; and continuously filling the inside of the formwork of the wall structure in which the truss sections are arranged and reinforcement is applied with concrete up to the height of the wall structure.

6. A method for constructing a wall structure adjacent to a column structure using the structural slit member according to any one of claims 1 to 4, comprising the steps of: A step of manufacturing a column unit in which the structural slit member is attached to the reinforcement of the column body; A step of lifting the column unit and arranging the structural slit member so as to be positioned at a side edge of the wall body; A step of connecting an intermediate support member inserted from the column body side to the fixing means; and continuously filling the inside of the formwork of the wall structure with concrete up to the height of the wall structure.

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