Reinforcement concrete form assembly, construction method, assembly method, and reinforcement concrete structure

Abstract

To firmly support a floating concrete form for stopping ready mixed-concrete of a rising part.SOLUTION: This reinforcement concrete form assembly comprises: a first side concrete form (56); a lower second side concrete form (57); a bottom concrete form (55) formed between the first side concrete form (56) and the second side concrete form (57); a slab concrete form (65) extending from the upper end of the second side concrete form (57) to a side opposite to the first side concrete form (56); a support tool (76) disposed at the upper end of the second side concrete form (57) or on the slab concrete form (65); a third side concrete form (77) disposed on the support tool (76) in parallel with the first side concrete form (56); a bridging material (78) laid between the first side concrete form (56) and the third side concrete form (77); reinforcement assemblies (51 and 52) arranged in a region surrounded by the first side concrete form (56), the second side concrete form (57), and the bottom concrete form (55); and an anchor (80) assembled to the reinforcement assemblies (51 and 52) and the bridging material (78).SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a rebar formwork assembly, a construction method, an assembly method and a reinforced concrete structure. [Background technology]

[0002] Patent Documents 1 and 2 disclose techniques for forming a rising concrete portion on a beam using a floating formwork. Patent Document 3 discloses a technique in which, when pouring ready-mixed concrete into the base and rising portions, the ready-mixed concrete is blocked by a floating formwork, and the lower portion of an anchor bolt erected by a support is buried in the ready-mixed concrete. Patent Document 4 discloses a technique in which, in order, a formwork carpenter assembles and forms a slab formwork, a reinforcing bar worker arranges slab reinforcement and preparation reinforcement, a formwork worker assembles and forms a floating formwork for the rising section supported by end-support metal fittings, and an earthworker pours fresh concrete into the slab formwork and floating formwork. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-136938 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-133993 [Patent Document 3] Japanese Patent Application Laid-Open No. 2008-150851 [Patent Document 4] Japanese Patent Application Laid-Open No. 2006-249818 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a means for firmly supporting a floating formwork that holds back fresh concrete in the rising portion. [Means for solving the problem]

[0005] The following reference numerals in parentheses refer to FIGS. 1 to 7.

[0006] In order to solve the above problems, according to claim 1, A rebar form assembly, comprising: a first side form (56) for the beam (50) and rising portion (70); a second side form (57) for the beam (50) that is erected parallel to the first side form (56) and has an upper end that is lower than an upper end of the first side form (56); a bottom formwork (55) for a beam (50) provided between the first side formwork (56) and the second side formwork (57); a slab form (65) extending from the upper end of the second side form (57) in the opposite direction to the first side form (56); a support (76) erected on the upper end of the second side form (57) or on the slab form (65); a third side form (77) for the rising portion (70) erected on the support (76) parallel to the first side form (56); a bridging member (78) installed between the first side formwork (56) and the third side formwork (77); Reinforcing bar assemblies (51 and 52) for a beam (50) to be placed in an area surrounded by the first side formwork (56), the second side formwork (57), and the bottom formwork (55); an anchor (80) assembled to the rebar assembly (51 and 52) in the region, extending upward from the rebar assembly (51 and 52) and assembled to the bridging member (78); A rebar form assembly is provided, comprising:

[0007] According to claim 1 as described above, since the third side formwork (77) is erected on the support (76), the third side formwork (77) is a floating formwork. Since the bridging member (78) is installed between the first side formwork (56) and the third side formwork (77), the third side formwork (77) is firmly supported by the first side formwork (56), and the distance between the third side formwork (77) and the first side formwork (56) is maintained. Since the anchors (80) are assembled to the reinforcing bar assemblies (51 and 52) and the bridging member (78), the bridging member (78) is firmly supported by the reinforcing bar assemblies (51 and 52), and the third side formwork (77) is firmly supported by the reinforcing bar assemblies (51 and 52) via the bridging member (78) and the anchors (80). The anchor (80) not only performs its original role as an anchor (80) but also plays a role in supporting the third side formwork (77), so the anchor (80) contributes to reducing the amount of materials used and improving the efficiency of construction work.

[0008] According to claim 2, 2. The reinforcing bar formwork assembly according to claim 1, The building includes a first formwork (46) and a second formwork (47) for an exterior wall that are erected parallel to each other, The first side form (56) is provided on the upper end of the first form (46) so as to extend upward from the upper end of the first form (46), The bottom form (55) extends from the upper end of the second form (47) in the opposite direction to the first form (46), The second side form (57) is erected parallel to the first side form (56) at the edge of the bottom form (55) opposite to the first form (46). A rebar formwork assembly is provided.

[0009] According to claim 3, A method for constructing a reinforced concrete structure (10) using the reinforcing bar formwork assembly of claim 1, comprising: pouring concrete (110) onto the slab form (65) up to the lower end of the third side form (77) to bury the support (76) in the concrete (110); Concrete (110) is poured into the area up to the bottom end of the third side form (77), thereby burying the lower part of the anchor (80) and the reinforcing bar assembly (51 and 52) in the concrete (110). A method of construction is provided.

[0010] According to claim 3 as described above, the slab (60) is formed by pouring concrete (110) onto the slab formwork (65) up to the lower end of the third side formwork (77), and the support (76) is embedded in the slab (60). By pouring concrete 110 into the area surrounded by the first side formwork 56, the second side formwork 57, and the bottom formwork 55 up to the bottom end of the third side formwork 77, the beams 50 and rising portions 70 are formed without any joints, and the bottoms of the anchors 80 are embedded in the beams 50 and rising portions 70. Because the third side formwork 77 is firmly supported, the third side formwork 77 does not collapse or shift out of position when the concrete 110 is poured. Because the beams (50) and the rising portions (70) are formed without any joints, cold joints do not occur at the boundaries between the beams (50) and the rising portions (70). There is no need for the work of creating joints or waterproofing, and there is no need for subsequent joint maintenance work. The joints between the beams (50) and the rising portions (70) are not visible on the surfaces of the beams (50) and the rising portions (70), resulting in a highly aesthetically pleasing reinforced concrete structure (10).

[0011] According to claim 4, A method for constructing a reinforced concrete structure (10) using the reinforcing bar formwork assembly according to claim 2, comprising the steps of: pouring concrete (110) between the first formwork (46) and the second formwork (47); pouring concrete (110) onto the slab form (65) up to the lower end of the third side form (77) to bury the support (76) in the concrete (110); Concrete (110) is poured into the area up to the bottom end of the third side form (77), thereby burying the lower part of the anchor (80) and the reinforcing bar assembly (51 and 52) in the concrete (110). A method of construction is provided.

[0012] According to the fourth aspect of the present invention, the wall (40) is formed by pouring concrete (110) between the first formwork (46) and the second formwork (47). By pouring concrete (110) onto the slab form (65) up to the bottom end of the third side form (77), the slab (60) is formed and the support (76) is embedded in the slab (60). By pouring concrete 110 into the area surrounded by the first side formwork 56, the second side formwork 57, and the bottom formwork 55 up to the bottom end of the third side formwork 77, the beams 50 and rising portions 70 are formed without any joints, and the bottoms of the anchors 80 are embedded in the beams 50 and rising portions 70. Because the third side formwork 77 is firmly supported, the third side formwork 77 does not collapse or shift out of position when the concrete 110 is poured. Because the beams (50) and the rising portions (70) are formed without any joints, cold joints do not occur at the boundaries between the beams (50) and the rising portions (70). There is no need for the work of creating joints or waterproofing, and there is no need for subsequent joint maintenance work. The joints between the beams (50) and the rising portions (70) are not visible on the surfaces of the beams (50) and the rising portions (70), resulting in a highly aesthetically pleasing reinforced concrete structure (10).

[0013] According to claim 5, The level of the concrete (110) poured in the area is higher than the level of the concrete (110) poured on the slab form (65) and lower than the level of the bridging material (78). A method of construction is provided.

[0014] According to the fifth aspect of the present invention, the bridge member (78) is not buried in the concrete (110), and therefore the beams (50) and the rising portions (70) have good performance.

[0015] According to claim 6, A method for assembling the rebar formwork assembly of claim 1, comprising: The bottom formwork (55) is laid, the first side formwork (56) and the second side formwork (57) are erected parallel to each other on both sides of the bottom formwork (55), the slab formwork (65) is assembled to the upper end of the second side formwork (57) and the slab formwork (65) is made to extend from the upper end of the second side formwork (57) in the opposite direction to the first side formwork (56), The support (76) is erected on the upper end of the second side formwork (57) or the slab formwork (65), The reinforcing bar assemblies (51 and 52) are arranged in the area surrounded by the first side formwork (56), the second side formwork (57), and the bottom formwork (55); The third side form (77) is set up on the support (76) in parallel with the first side form (56), The bridging member (78) is installed between the first side formwork (56) and the third side formwork (77), Assembling the anchor (80) to the rebar assembly (51 and 52) in the region, extending the anchor (80) upward from the rebar assembly (51 and 52), and assembling the anchor (80) to the bridge member (78). An assembly method is provided.

[0016] According to claim 7, A method for assembling the rebar formwork assembly of claim 2, comprising: The first formwork (46) and the second formwork (47) are erected parallel to each other, Assemble the bottom form (55) to the upper end of the second form (47) so that the bottom form (55) extends in the opposite direction to the first form (46); The first side form (56) is provided on the upper end of the first form (46) so as to extend upward from the upper end of the first form (46), The second side form (57) is erected parallel to the first side form (56) at the edge of the bottom form (55) opposite to the first form (46), Assemble the slab formwork (65) to the upper end of the second side formwork (57) so that the slab formwork (65) extends from the upper end of the second side formwork (57) in the opposite direction to the first side formwork (56); The support (76) is erected on the upper end of the second side formwork (57) or the slab formwork (65), The reinforcing bar assemblies (51 and 52) are arranged in the area surrounded by the first side formwork (56), the second side formwork (57), and the bottom formwork (55); The third side form (77) is set up on the support (76) in parallel with the first side form (56), The bridging member (78) is installed between the first side formwork (56) and the third side formwork (77), Assembling the anchor (80) to the rebar assembly (51 and 52) in the region, extending the anchor (80) upward from the rebar assembly (51 and 52), and assembling the anchor (80) to the bridge member (78). An assembly method is provided.

[0017] According to claim 8, A reinforced concrete structure (10), Beam (50) and a slab (60) extending horizontally and joined to the beam (50); a rising portion (70) provided on the beam (50) and protruding upward from the upper surface of the slab (60); an anchor (80) embedded in the rising portion (70) and protruding upward from the upper surface of the rising portion (70); At least one embedded support (76) embedded in the slab (60) so as to penetrate from the upper surface of the slab (60) to the lower surface of the slab (60) at the side of the rising portion (70); A reinforced concrete structure (10) is provided, comprising:

[0018] According to claim 9, A reinforced concrete structure (10) according to claim 8, Further provided with an exterior wall erected thereon, The beam (50) is joined to the upper end of the outer wall, The slab (60) extends horizontally inside the outer wall. A reinforced concrete structure (10) is provided, characterized by the following: [Effects of the Invention]

[0019] According to the present invention, the third side formwork, which is a floating formwork that holds back the fresh concrete in the rising portion, is firmly supported. [Brief explanation of the drawings]

[0020] [Figure 1] Figure 1 is a side view of the building. [Figure 2] FIG. 2 is a side view of the building without any cladding installed. [Figure 3] FIG. 3 is a vertical cross-sectional view of the upper part of the outer periphery of a first structural part provided in a building. [Figure 4] FIG. 4 is an explanatory diagram of the assembly process of the reinforcing bar form assembly used for the first structural section. [Figure 5] FIG. 5 is an explanatory diagram of the assembly process of the reinforcing bar form assembly. [Figure 6] FIG. 6 is an explanatory diagram of the assembly process of the reinforcing bar form assembly. [Figure 7] FIG. 7 is an explanatory diagram of the process of pouring concrete into the reinforcing bar form assembly. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0022] <1. Building> FIG. 1 is a side view of building 1. FIG. 2 is a side view showing the main structural components of building 1. Building 1 is multi-story, specifically four stories high. The skeleton of building 1 comprises a first structural section 10 and a second structural section 20. First structural section 10 constitutes the lower section of building 1, more specifically the foundation and first floor. First structural section 10 is a reinforced concrete structure. Second structural section 20 constitutes the upper section of building 1, more specifically the second to fourth floors. Second structural section 20 is made of wood. Second structural section 20 may have a wall structure, a frame structure, or both. Wall structure refers to a structure in which the load and seismic force of building 1 are supported by walls. Frame structure refers to a structure in which the load and seismic force of building 1 are supported by columns, beams, and braces. Second structural section 20 may be constructed using a panel construction method, a frame construction method, a frame panel construction method, a wooden frame construction method, or a combination of two or more of these methods. In one example, the second structural section 20 is a wooden wall structure constructed using a wood panel adhesive construction method, which is a type of panel construction method, and is mainly composed of wood panels 31. The wood panels 31 have a wooden frame assembled into a rectangular frame shape, wooden face plates attached to the front and back surfaces of the frame, and wooden auxiliary crosspieces arranged vertically, horizontally, or vertically and horizontally inside the frame. The wood panels 31 may also have insulation filled inside the rectangular frame.

[0023] The first structural section 10 has a reinforced concrete foundation in the ground. The foundation may be a mat foundation, a strip foundation, a footing, an underground beam, or a pile foundation, or a combination of any of these.

[0024] FIG. 3 is a vertical cross-sectional view of the upper portion of the outer periphery of the first structural section 10. The first structural section 10 has a reinforced concrete exterior wall 40 erected on a foundation on the periphery of the first floor. The exterior wall 40 is provided along the periphery of the first floor. The exterior wall 40 includes a wall reinforcement assembly and concrete 43, and the wall reinforcement assembly includes multiple vertical reinforcements 41 and multiple horizontal reinforcements 42. The vertical reinforcements 41 extend vertically and are arranged horizontally at intervals. The horizontal reinforcements 42 extend horizontally and are arranged vertically at intervals along the vertical reinforcements 41. The vertical reinforcements 41 and horizontal reinforcements 42 are embedded in the concrete 43. The vertical reinforcements 41 are anchored to beams 50. The concrete 43 extends along the vertical reinforcements 41 and horizontal reinforcements 42 and has a thickness in the horizontal direction perpendicular to the vertical reinforcements 41 and horizontal reinforcements 42. In the example shown in FIG. 3, the exterior wall 40 is a single-reinforcement type. However, the exterior wall 40 may be of a double-reinforcement type, in which pairs of vertical reinforcement 41 and horizontal reinforcement 42 are doubled in the thickness direction of the exterior wall 40.

[0025] The first structural section 10 has a beam 50 provided on the upper end of the exterior wall 40. The beam 50 extends circumferentially along the outer periphery of the building 1. The beam 50 has a beam reinforcing bar assembly and concrete 53, and the beam reinforcing bar assembly has a plurality of main reinforcement bars 51 and a plurality of shear reinforcement bars 52. The shear reinforcement bars 52 are bent into a rectangular shape. The shear reinforcement bars 52 are arranged at intervals in the horizontal direction. The main reinforcement bars 51 extend horizontally. The main reinforcement bars 51 are arranged at intervals along the shear reinforcement bars 52. These main reinforcement bars 51 are surrounded by the shear reinforcement bars 52. The main reinforcement bars 51 and the shear reinforcement bars 52 are embedded in the concrete 53.

[0026] The first structural section 10 has a horizontally extending slab 60 made of reinforced concrete. The periphery of the slab 60 is joined to the beams 50. The slab 60 has a slab reinforcement assembly and concrete 63, and the slab reinforcement assembly has a plurality of main reinforcements 61 and a plurality of distribution reinforcements 62. The main reinforcements 61 extend horizontally parallel to each other. The distribution reinforcements 62 extend horizontally parallel to each other. The distribution reinforcements 62 are arranged perpendicular to the main reinforcements 61. The distribution reinforcements 62 and main reinforcements 61 are fixed to the beams 50 and the second beams. The distribution reinforcements 62 and main reinforcements 61 are embedded in concrete 63. The concrete 63 extends horizontally along the distribution reinforcements 62 and main reinforcements 61 and has a thickness in the vertical direction. In the example shown in FIG. 3, the slab 60 is a double-reinforced concrete slab, in which sets of main reinforcements 61 and distribution reinforcements 62 are doubled in the thickness direction of the slab 60. However, the slab 60 may be of a single reinforcement type.

[0027] The first structural section 10 has a reinforced concrete rising section 70 provided on the beam 50. The rising section 70 is provided along the periphery of the building 1. The rising section 70 is formed to protrude above the top surface of the slab 60. The rising section 70 is disposed below on the exterior wall of the second floor of the second structural section 20. The rising section 70 has a rising section reinforcement assembly and concrete 73, and the rising section reinforcement assembly has multiple main reinforcements 71 and multiple shear reinforcement bars 72. The main reinforcement bars 71 are arranged horizontally above the beam reinforcement assembly, parallel to the main reinforcement bars 51 of the beam reinforcement assembly. The shear reinforcement bars 72 are bent in a U-shape. The shear reinforcement bars 72 are arranged horizontally at intervals. The shear reinforcement bars 72 are inserted between the shear reinforcement bars 52 of the beam reinforcement assembly from above the main reinforcement bars 71. The shear reinforcement bars 72 surround the main reinforcement bars 71 and are fixed to the main reinforcement bars 71. The shear reinforcement 72 is fixed to the main reinforcement 51 or the shear reinforcement 52 of the beam reinforcement assembly. The main reinforcement 71 and the shear reinforcement 72 are embedded in concrete 73. The concrete 73 is formed so as to protrude upward from the concrete 53 of the beam 50.

[0028] The first structural section 10 has one or more dead-end supports 76 embedded in the outer peripheral edge of the slab 60. The dead-end supports 76 penetrate from the upper surface to the lower surface of the slab 60. The upper ends of the dead-end supports 76 are exposed from the slab 60 at the sides of the rising section 70, and the height of the upper ends of the dead-end supports 76 is aligned with the height of the upper surface of the slab 60. The lower ends of the dead-end supports 76 are exposed from the slab 60, and the height of the lower ends of the dead-end supports 76 is aligned with the height of the lower surface of the slab 60. When there are two or more dead-end supports 76, these dead-end supports 76 are arranged at intervals horizontally along the side surfaces of the rising section 70 at the sides of the rising section 70.

[0029] A leveling material 75 is deposited on the upper surface of the rising portion 70 and solidified.

[0030] Although not shown in FIG. 3, the first structural section 10 has a reinforced concrete inner wall erected on a foundation inside the outer wall 40. The first structural section 10 has a second beam that is provided on the upper ends of some or all of the inner walls and extends horizontally. The second beam is joined to the slab 60. The first structural section 10 also has a second rising section made of reinforced concrete that is provided on the slab 60 or the second beam inside the rising section 70. The second rising section is positioned below the inner wall of the second floor of the second structural section 20. A leveling material is also formed on the upper surface of the second rising section. The first structural section 10 may have reinforced concrete columns.

[0031] The lower end of the second structural section 20 is fixed to the upper end of the first structural section 10 by a plurality of embedded anchors 80. The embedded anchors 80 are, for example, anchor bolts. The embedded anchors 80 are attached to the upper end of the first structural section 10. The lower portions of the embedded anchors 80 are embedded in the concrete 53, 73 of the rising section 70 and the beam 50, and the upper portions of the embedded anchors 80 protrude upward from the upper surface of the rising section 70.

[0032] The second structural section 20 has a square wooden base 21 at the lower end of the periphery of the second floor. The base 21 lies on the upper surface of the rising section 70 and extends horizontally along the periphery of the second floor. A base ring 22 is provided between the base 21 and the upper surface of the rising section 70. The second structural section 20 has wooden exterior walls 23 on the periphery of the second floor. The exterior walls 23 are provided standing on the base 21. The exterior walls 23 are made of wood panels 31. In the example shown in FIG. 3, the exterior walls 23 have a double structure of wood panels 31. However, the exterior walls 23 may also have a single structure of wood panels 31.

[0033] The embedded anchor 80 penetrates the lower part of the base 22, the base 21, and the exterior wall 23, and the nut 81 is tightened to the embedded anchor 80 inside the exterior wall 23. Tightening the nut 81 contributes to fixing the base 22, the base 21, and the exterior wall 23 to the upper surface of the rising part 70. The lower part of the exterior wall 23 through which the embedded anchor 80 penetrates refers to the lower frame material of the frame of the wood panel 31. The inside of the exterior wall 23 where the nut 81 is placed refers to the cavity sandwiched between the face materials of the wood panel 31. Note that if the second structural part 20 has a wooden pillar on the second floor erected on the base 21, the lower end of the wooden pillar may be fixed to the rising part 70 by the embedded anchor 80.

[0034] 2. Building Construction Methods When constructing the building 1, a reinforced concrete structure, i.e., the first structural part 10, is constructed on the ground, and then the second structural part 20 is constructed on the first structural part 10 using the panel construction method, the post and beam construction method, the post and beam panel construction method, the frame wall construction method, or a combination of two or more of these methods.

[0035] The first structural portion 10 is constructed as follows.

[0036] (1) First, a foundation for the first structural portion 10 is constructed so that part or all of the foundation is buried in the ground.

[0037] (2) After the foundation is constructed, the rebar formwork assembly is assembled. The assembly method for the rebar formwork assembly is as follows:

[0038] (2-1) When the first structural section 10 has columns made of reinforced concrete, after the reinforcing bars of the columns are arranged, formwork for the columns is assembled.

[0039] (2-2) As shown in Figure 4, after arranging the vertical reinforcement 41 and horizontal reinforcement 42 of the exterior wall 40 of the first structural section 10, a first formwork 46 and a second formwork 47 for the exterior wall 40 are assembled parallel to each other. When arranging the vertical reinforcement 41, the vertical reinforcement 41 is made vertical and arranged at intervals in the horizontal direction. When arranging the horizontal reinforcement 42, the horizontal reinforcement 42 is made horizontal and arranged at intervals in the vertical direction along the vertical reinforcement 41. When assembling the first formwork 46 and the second formwork 47, the first formwork 46 and the second formwork 47 are erected parallel to each other on both sides of the vertical reinforcement 41 and the horizontal reinforcement 42.

[0040] (2-3) After the vertical and horizontal reinforcement of the inner wall of the first structural section 10 is arranged, the formwork for the inner wall is assembled.

[0041] The above steps (2-1) to (2-3) can be performed in any order, and some steps may be performed in parallel.

[0042] (2-4) Then, the supports for the beams 50 are erected next to the second formwork 47 and aligned along the formwork 47.

[0043] (2-5) Thereafter, the bottom formwork 55 for the beam 50 is assembled to the upper end of the second formwork 47, and the bottom formwork 55 is extended in the opposite direction from the first formwork 46, and the bottom formwork 55 is laid on top of the shoring. The first side formwork 56 is placed on top of the upper end of the first formwork 46 so that it extends upward from the upper end of the first formwork 46. The second side formwork 57 is erected parallel to the first side formwork 56 at the edge of the bottom formwork 55 on the opposite side of the first formwork 46. The height of the upper end of the second side formwork 57 is lower than the height of the upper end of the first side formwork 56. The order of these operations does not matter. These operations may be performed in parallel. Furthermore, step (2-4) may be performed in parallel with step (2-5). A stepped portion 56 a is provided in a convex shape on the inner surface of the first side formwork 56 along the upper end of the first side formwork 56 .

[0044] (2-6) Install the supports for the second beam and assemble the bottom and side forms for the second beam on top of the supports. Note that step (2-6) may be carried out in parallel with steps (2-4) or (2-5), or both.

[0045] (2-7) Thereafter, shoring for the slab 60 is installed. Next, the slab formwork 65 is assembled to the upper end of the second side formwork 57, and the slab formwork 65 is extended from the upper end of the second side formwork 57 in the opposite direction from the first side formwork 56, and the slab formwork 65 is laid on top of the shoring. When laying the slab formwork 65, the slab formwork 65 is assembled to the side formwork for the second beam. Step (2-7) may be carried out in parallel with steps (2-4), (2-5), or (2-6), or two or more of these steps.

[0046] (2-8) After that, main reinforcement 51 and shear reinforcement 52 are arranged in the area surrounded by the bottom formwork 55 and side formwork 56, 57, and a beam reinforcement assembly consisting of these main reinforcement 51 and shear reinforcement 52 is assembled. The main reinforcement and shear reinforcement for the second beam are also arranged inside the formwork for the second beam. After assembling the beam reinforcement assembly from the main reinforcement 51 and shear reinforcement 52 on the ground, the beam reinforcement assembly may be placed in the area surrounded by the bottom formwork 55 and side formwork 56, 57 by a crane or the like. Furthermore, after step (2-5), step (2-8) may be performed in parallel with steps (2-6) and / or (2-7).

[0047] (2-9) After that, the main reinforcement 61 and distribution reinforcement 62 of the slab are arranged on the slab formwork 65, and a slab reinforcement assembly consisting of these main reinforcement 61 and distribution reinforcement 62 is assembled. Note that step (2-9) may be performed in parallel with step (2-8).

[0048] (2-10) Then, in the area surrounded by the bottom formwork 55 and side formworks 56, 57, the embedded anchors 80 are set up vertically and attached to the main reinforcement 51 or the shear reinforcement 52, or both, so that the embedded anchors 80 extend upward from the beam reinforcement assembly. Note that step (2-11) may be performed in parallel with step (2-8). When assembling the beam reinforcement assembly on the ground, the embedded anchors 80 may be attached to the main reinforcement 51 or the shear reinforcement 52, or both, on the ground, and the beam reinforcement assembly may then be placed together with the embedded anchors 80 in the area surrounded by the bottom formwork 55 and side formworks 56, 57 using a crane or the like.

[0049] (2-11) Then, as shown in Figure 5, the main reinforcement 71 is arranged on top of the beam reinforcement assembly parallel to the main reinforcement 51 of the beam reinforcement assembly, and the shear reinforcement 72 is inserted from above the main reinforcement 71 between the shear reinforcement 52 of the beam reinforcement assembly, and these main reinforcement 71 and shear reinforcement 72 are secured with a tie wire or the like. The shear reinforcement 72 is secured to the main reinforcement 51 or shear reinforcement 52 of the beam reinforcement assembly with a tie wire. The main reinforcement 71 or shear reinforcement 72 may also be secured to the embedded anchors 80 with a tie wire or the like. Note that step (2-11) may be performed in parallel with steps (2-9) or (2-10). When the beam reinforcement assembly is assembled on the ground, the rising reinforcement assembly may also be assembled on the ground at the same time.

[0050] (2-12) Then, as shown in Figure 6, the fixed-buried support 76 is erected on the upper end of the second side formwork 57 or on the edge of the upper surface of the slab formwork 65. When multiple fixed-buried support pieces 76 are used, these fixed-buried support pieces 76 are arranged along the edge of the upper surface of the slab formwork 65.

[0051] (2-13) Then, the third side formwork 77 is erected on the buried support 76 parallel to the first side formwork 56, and the third side formwork 77 is separated upward from the slab formwork 65. The third side formwork 77 is a floating formwork. A bridging member 78 is installed between the upper end of the third side formwork 77 and the upper end of the first side formwork 56, and both ends of the bridging member 78 are fixed to the upper ends of the third side formwork 77 and the first side formwork 56, respectively. The bridging member 78 is a rod-shaped or strip-shaped member. Holes for passing embedded anchors 80 are formed in the bridging member 78, and the embedded anchors 80 may be passed through them when the bridging member 78 is installed. When installing the bridging member 78, the bridging member 78 may be adjacent to the embedded anchors 80.

[0052] (2-14) Thereafter, the embedded anchors 80 are fixed to the bridging material 78 with binding wires or the like. By fixing the embedded anchors 80 to the bridging material 78, the bridging material 78 is stabilized, and ultimately the third side formwork 77 is also stabilized. The order of steps (2-12), (2-13), and (2-14) may be changed. For example, steps (2-12), (2-14), and (2-13) may be performed in this order; steps (2-13), (2-12), and (2-14); steps (2-13), (2-14), and (2-12); steps (2-14), (2-12), and (2-13); or steps (2-14), (2-13), and (2-12). Steps (2-12), (2-13), and (2-14) may also be performed in parallel. At least one of steps (2-12), (2-13), and (2-14) may be performed before step (2-11), or at least one of steps (2-12), (2-13), and (2-14) may be performed in parallel with step (2-11).

[0053] (2-15) The floating formwork for the second rising portion is assembled so as to float from the formwork for the slab 65 or the bottom formwork for the second beam, and the main reinforcement and shear reinforcement for the second rising portion are arranged inside the floating formwork, and furthermore, embedded anchors are provided inside the floating formwork and protrude upward.

[0054] This completes the rebar formwork assembly. In the completed rebar formwork assembly, the third side formwork 77 is supported by the embedded supports 76, and is also supported by the first side formwork 56 via the bridging members 78. Furthermore, the third side formwork 77 is supported by the beam rebar assembly via the bridging members 78 and embedded anchors 80. This stabilizes the posture of the third side formwork 77, and prevents it from shifting out of position.

[0055] (3) After the reinforcing bar form assembly is completed, fresh concrete 110 is poured into the reinforcing bar form assembly as shown in FIG. 7. Specifically, fresh concrete 110 is poured inside the formwork for the columns and the formwork for the interior wall. Fresh concrete 110 is poured between the first formwork 46 and the second formwork 47 for the exterior wall 40, and the vertical reinforcement 41 and the horizontal reinforcement 42 of the wall reinforcement assembly are embedded in the fresh concrete 110. Fresh concrete 110 is poured inside the formwork for the second beam. Fresh concrete 110 is poured into the area surrounded by the bottom formwork 55 and the side formworks 56, 57, and the main reinforcement 51 and shear reinforcement 52 of the reinforcing bar assembly, the lower parts of the shear reinforcement 72 of the rising reinforcement assembly, and the lower parts of the embedded anchors 80 are embedded in the fresh concrete 110. Fresh concrete 110 is poured onto the slab formwork 65 up to the level of the bottom end of the third side formwork 77, and the main reinforcements 61 and distribution reinforcements 62 of the slab reinforcement assembly and the dead-end supports 76 are embedded in the fresh concrete 110. Fresh concrete 110 is poured inside the floating formwork for the second rising section. Fresh concrete 110 is poured between the third side formwork 77 and the stepped portion 56a of the first side formwork 56, and the upper parts of the shear reinforcement 72 and the main reinforcements 71 of the rising section reinforcement assembly are embedded in the fresh concrete 110. The level of the fresh concrete 110 poured between the third side formwork 77 and the stepped portion 56a of the first side formwork 56 is higher than the level of the fresh concrete 110 poured onto the slab formwork 65 but lower than the level of the bridging material 78. Therefore, the bridging material 78 is not embedded in the fresh concrete 110. When the fresh concrete 110 is poured between the third side formwork 77 and the stepped portion 56a of the first side formwork 56, Because the third side formwork 77 is firmly supported, the third side formwork 77 resists the flow and pressure of the fresh concrete 110, and does not collapse or shift in position. During or after pouring the fresh concrete 110, the fresh concrete 110 is compacted as necessary to make the fresh concrete 110 dense.

[0056] (4) After the fresh concrete 110 is cured and hardened, a leveling material 75 is applied on the concrete 73 of the rising portion 70. A leveling material is also applied on the second rising portion. A leveling material may also be applied on the slab 60.

[0057] (5) Thereafter, the demolding process is carried out. That is, the formwork 46, 47, 56, 57, 65, 77 and the bridging member 78 are dismantled, and the formwork for the interior wall, the second beam, and the second rising portion is dismantled. Note that the step (4) may be carried out after the step (5).

[0058] After the first structural part 10 is constructed on the ground as described above, the second structural part 20 is constructed on the first structural part 10 using the panel construction method, the post and beam construction method, the post and beam panel construction method, or the framework wall construction method, or a combination of two or more of these.

[0059] <3. Summary> (1) As shown in Figures 6 and 7, the bridging member 78 is installed between the first side formwork 56 and the third side formwork 77, so that the third side formwork 77 is firmly supported by the first side formwork 56, and the distance between the third side formwork 77 and the first side formwork 56 is maintained. The embedded anchors 80 are attached to the beam reinforcement assembly and the bridging member 78, so that the bridging member 78 is firmly supported by the beam reinforcement assembly, and the third side formwork 77 is firmly supported by the beam reinforcement assembly via the bridging member 78 and the embedded anchors 80. The embedded anchors 80 not only perform their original role as embedded anchors 80 but also play the role of supporting the third side formwork 77, so that the embedded anchors 80 contribute to reducing the amount of materials used and improving the efficiency of construction work.

[0060] (2) As shown in FIG. 7, the exterior wall 40 is formed by pouring ready-mixed concrete 110 between the first formwork 46 and the second formwork 47.

[0061] (3) As shown in Figure 7, by pouring fresh concrete 110 onto the slab formwork 65 up to the lower end of the third side formwork 77, the slab 60 is formed and the embedded support 76 is embedded in the slab 60.

[0062] (4) As shown in Figure 7, by pouring ready-mixed concrete 110 into the area surrounded by the first side formwork 56, the second side formwork 57, and the bottom formwork 55 up to the bottom end of the third side formwork 77, the beam 50 and the rising portion 70 are formed without any joints, and the lower parts of the embedded anchors 80 are embedded in the beam 50 and the rising portion 70. Because the third side formwork 77 is firmly supported, the third side formwork 77 does not collapse or shift when the concrete 110 is poured. Therefore, a high-quality rising portion 70 is formed.

[0063] (5) As shown in Figure 7, the beam 50 and the rising portion 70 are formed without a joint, so cold joints do not occur at the boundary between the beam 50 and the rising portion 70. This eliminates the need for work to create a joint and waterproofing, and also eliminates the need for subsequent joint maintenance. The joints between the beam 50 and the rising portion 70 are not visible on the surface of the beam 50 and the rising portion 70, resulting in a highly aesthetically pleasing reinforced concrete structure 10.

[0064] (6) The level of the ready-mixed concrete 110 poured into the area surrounded by the first side formwork 56, the second side formwork 57, and the bottom formwork 55 is higher than the level of the ready-mixed concrete 110 poured onto the slab formwork 65, but lower than the level of the bridging material 78. Since the bridging material 78 is not buried in the ready-mixed concrete 110, the performance of the beam 50 and the rising portion 70 is good. Note that the level here refers to the position in the vertical direction.

[0065] (7) Because the first structural section 10 of Building 1 is made of reinforced concrete, Building 1 has high earthquake resistance and a long lifespan. Therefore, Building 1 contributes to achieving goals such as "sustainable urban development" and the "SDGs (Sustainable Development Goals)."

[0066] (8) The second structural section 20 of the building 1 is made of wood. The energy used from production to disposal and disposal of the wood used in the second structural section 20 is less than the energy used from production to disposal and disposal of metal materials or concrete materials. Therefore, the second structural section 20, and ultimately the building 1, contributes to the realization of a decarbonized society by promoting carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and to the achievement of the Sustainable Development Goals (SDGs). [Explanation of symbols]

[0067] 1. Building 10 First structural section (reinforced concrete structure) 40 Exterior Wall 46 First Formwork 47 Second Formwork 50 beams 51 Main reinforcement 52 Shear reinforcement 55 Bottom formwork 56 First side formwork 57 Second side formwork 76 Buried and killed support 77 Third side formwork 60 Slabs 65 Slab Formwork 110 Ready-mix concrete

Claims

1. A rebar form assembly, comprising: a first side formwork for the beam and rising portion; a second side form for a beam erected parallel to the first side form and having an upper end lower than an upper end of the first side form; a bottom formwork for a beam provided between the first side formwork and the second side formwork; a slab formwork extending from an upper end of the second side formwork in a direction opposite to the first side formwork; A support erected on the upper end of the second side formwork or the slab formwork; a third side form for a rising portion erected on the support in parallel with the first side form; A bridging member installed between the first side formwork and the third side formwork; a reinforcing bar assembly for a beam to be placed in an area surrounded by the first side formwork, the second side formwork, and the bottom formwork; an anchor assembled to the rebar assembly in the region, extending upward from the rebar assembly, and assembled to the bridging member; A reinforcing bar formwork assembly comprising:

2. 2. The rebar form assembly of claim 1, The first and second formworks for the exterior wall are provided and erected parallel to each other, the first side form is provided on the upper end of the first form so as to extend upward from the upper end of the first form, the bottom formwork extends from the upper end of the second formwork in a direction opposite to the first formwork, The second side form is erected parallel to the first side form at the edge of the bottom form opposite to the first form. A reinforcing bar formwork assembly characterized by:

3. A method for constructing a reinforced concrete structure using the reinforcing bar form assembly according to claim 1, comprising the steps of: pouring concrete onto the slab form up to the lower end of the third side form to bury the support in the concrete; pouring concrete into the area up to the bottom end of the third side formwork, thereby burying the lower part of the anchor and the reinforcing bar assembly in the concrete; A construction method characterized by:

4. A method for constructing a reinforced concrete structure using the reinforcing bar formwork assembly according to claim 2, comprising the steps of: pouring concrete between the first formwork and the second formwork; pouring concrete onto the slab form up to the lower end of the third side form to bury the support in the concrete; pouring concrete into the area up to the bottom end of the third side formwork, thereby burying the lower part of the anchor and the reinforcing bar assembly in the concrete; A construction method characterized by:

5. 5. The construction method according to claim 3 or 4, The level of concrete poured in the area is higher than the level of concrete poured on the slab formwork and lower than the level of the bridging material. A construction method characterized by:

6. A method for assembling the rebar form assembly of claim 1, comprising: Laying the bottom formwork, erecting the first side formwork and the second side formwork parallel to each other on both sides of the bottom formwork, assembling the slab formwork to the upper end of the second side formwork, and causing the slab formwork to extend from the upper end of the second side formwork in the opposite direction to the first side formwork, The support is erected on the upper end of the second side formwork or on the slab formwork, The reinforcing bar assembly is arranged in the area surrounded by the first side formwork, the second side formwork, and the bottom formwork; The third side form is erected on the support in parallel with the first side form; The bridging member is installed between the first side formwork and the third side formwork, Assembling the anchor to the rebar assembly in the region, extending the anchor upward from the rebar assembly, and assembling the anchor to the bridge member. An assembly method characterized by:

7. A method for assembling the rebar form assembly of claim 2, comprising: The first formwork and the second formwork are erected parallel to each other, Assemble the bottom form onto the upper end of the second form so that the bottom form extends in the opposite direction to the first form; The first side form is provided on the upper end of the first form so as to extend upward from the upper end of the first form; The second side form is erected parallel to the first side form at an edge of the bottom form opposite to the first form, Assemble the slab form onto the upper end of the second side form, causing the slab form to extend from the upper end of the second side form in the opposite direction to the first side form; The support is erected on the upper end of the second side formwork or on the slab formwork, The reinforcing bar assembly is arranged in the area surrounded by the first side formwork, the second side formwork, and the bottom formwork; The third side form is erected on the support in parallel with the first side form; The bridging member is installed between the first side formwork and the third side formwork, Assembling the anchor to the rebar assembly in the region, extending the anchor upward from the rebar assembly, and assembling the anchor to the bridge member. An assembly method characterized by:

8. A reinforced concrete structure, Beams and a slab extending horizontally and connected to the beam; a rising portion provided on the beam and protruding upward from the upper surface of the slab; an embedded anchor embedded in the rising portion and protruding upward from an upper surface of the rising portion; At least one embedded support embedded in the slab so as to penetrate from the upper surface of the slab to the lower surface of the slab at the side of the rising portion; A reinforced concrete structure comprising:

9. The reinforced concrete structure according to claim 8, Further provided with an exterior wall erected thereon, The beam is joined to the upper end of the exterior wall, The slab extends horizontally inside the exterior wall. A reinforced concrete structure characterized by:

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