Steel bar frame and method for assembling steel bar frame

Abstract

To provide a steel bar frame that can reduce labor and time required for assembly and a method for assembling a steel bar frame.SOLUTION: A steel bar frame comprises multiple steel bar frame units 2 arranged at intervals, and connecting materials 3 connecting the arranged steel bar frame units 2. The steel bar frame units 2 comprises a first column material 4 and a second column material 5 arranged at intervals, a beam material provided between the first column material 4 and the second column material 5, and a brace material provided between the first column material 4 and the second column material 5. The connecting material 3 comprises a first connecting material 31 connecting the first column materials 4 of each of the steel bar frame units 2, and a second connecting material 32 connecting the second column materials 5 of each of the steel bar frame units 2. The first connecting material 31 and the first column material 4 are bolted together. The second connecting material 32 and the second column material 5 are bolted together.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a reinforcing bar rack and a method for assembling a reinforcing bar rack. [Background technology]

[0002] Conventionally, in the reinforcement work for large structures such as the foundations of onshore wind turbines, reinforcing bars are fixed to a reinforcing bar frame assembled with angle bars, etc. (For example, see Patent Document 1). The reinforcing bar frame is assembled with steel materials such as angle bars. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-36584 A Summary of the Invention [Problem to be solved by the invention]

[0004] The steel frame is assembled by welding steel materials that have been cut and processed in advance at a factory or other facility on-site. This requires time and effort to assemble the steel frame, and requires the arrangement of welding workers (blacksmiths). In addition, while the welding work for assembling the steel frame is being carried out, the rebar arrangement work around the steel frame must be suspended, which means that the assembly work of the steel frame and the rebar arrangement work cannot be carried out in parallel, resulting in a problem of increased construction time.

[0005] Therefore, an object of the present invention is to provide a reinforcing bar stand and a method for assembling a reinforcing bar stand that can reduce the labor and time required for assembly. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the reinforced concrete mounting system of the present invention comprises a plurality of reinforced concrete mounting units arranged at intervals from each other, and connecting members connecting the arranged reinforced concrete mounting units, the reinforced concrete mounting units comprising a first pillar member and a second pillar member arranged at intervals from each other, and an erection member provided between the first pillar member and the second pillar member and joined to the first pillar member and the second pillar member, the connecting members comprising a first connecting member connecting the first pillar members of each of the plurality of reinforced concrete mounting units, and a second connecting member connecting the second pillar members of each of the plurality of reinforced concrete mounting units, the first connecting member and the first pillar members being bolted together, and the second connecting member and the second pillar member being bolted together.

[0007] In order to achieve the above object, the method for assembling a reinforced concrete frame according to the present invention includes a reinforced concrete frame unit fabrication process for fabricating a reinforced concrete frame unit, a reinforced concrete frame unit installation process for arranging a plurality of the reinforced concrete frame units at intervals from each other, and a connection process for connecting the arranged plurality of the reinforced concrete frame units with a connection member, and the reinforced concrete frame unit includes a first column member and a second column member that are arranged at an interval from each other, a beam member provided between the first column member and the second column member, and a connection member between the first column member and the second column member. and a brace material provided between the first and second pillar members, and the connecting members include a first connecting member that connects the first pillar members of each of the multiple reinforced concrete mounting units and a second connecting member that connects the second pillar members of each of the multiple reinforced concrete mounting units, and in a reinforced concrete mounting unit installation process, the lower ends of the first pillar members and the lower ends of the second pillar members are fixed to concrete provided below, and in a connecting process, the first connecting member and the first pillar member are bolted together, and the second connecting member and the second pillar member are bolted together.

[0008] In the present invention, a plurality of reinforcing bar stand units are connected to each other by bolting connecting members to the reinforcing bar stand units to assemble the reinforcing bar stand. Therefore, a plurality of reinforcing bar stand units are manufactured in advance in a factory or the like, transported to a site, and assembled by connecting the reinforcing bar stand units with connecting members at the site, so that the reinforcing bar stand can be assembled at the site without welding. Therefore, it is possible to reduce the labor and time required for assembling the reinforcing bar stand at the site. Since there is no need to arrange for welding workers to assemble the reinforcing bar stand, process management is easy. Since reinforcing bar arrangement work can be performed in parallel with the assembly work of the reinforcing bar stand, it is possible to shorten the construction period.

[0009] In addition, in the reinforced concrete frame of the present invention, the first connecting member and the first column member may be joined by fastening nuts to bolts inserted through holes formed in the first connecting member and holes formed in the first column member, and the second connecting member and the second column member may be joined by fastening nuts to bolts inserted through holes formed in the second connecting member and holes formed in the second column member.

[0010] With this configuration, the joining of the first pillar member and the first connecting member, and the joining of the second pillar member and the second connecting member can be carried out easily and accurately on-site.

[0011] In addition, in the reinforced concrete mounting system of the present invention, the reinforced concrete mounting system unit may have a brace material provided between the first column material and the second column material and joined to the first column material and the second column material.

[0012] With this configuration, the reinforcing bar stand unit has a more stable shape, making it easier to install the reinforcing bar stand unit on site. Effect of the Invention

[0013] According to the present invention, it is possible to reduce the labor and time required for assembling a reinforcing bar stand. [Brief description of the drawings]

[0014] [Figure 1] 1 is a cross-sectional view of a structure on which a reinforcing bar rack according to an embodiment of the present invention is installed. [Diagram 2] FIG. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 2 is an elevation view of a reinforced concrete stand unit. [Diagram 5] FIG. 13 shows the reinforcement on the steel frame. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a reinforcing bar rack and a method for assembling a reinforcing bar rack according to an embodiment of the present invention will be described with reference to Figs. 1 to 5. The reinforcing bar assembly method according to this embodiment is a method for assembling a reinforcing bar frame for a large structure, and is a method for assembling a reinforcing bar frame 1 provided on a foundation 11 of an onshore wind turbine shown in FIG. As shown in Figures 2 and 3, the reinforced concrete frame 1 is installed on bottom concrete 12 poured at the bottom of foundation 11, and is embedded in intermediate concrete 13 poured on top of the bottom concrete 12 with a number of reinforcing bars 16 (see Figure 5) fixed above. Reinforcing bars 15 are arranged on top of the bottom concrete 12. The reinforced concrete frame 1 is installed so as not to interfere with the reinforcing bars 15 on top of the bottom concrete 12.

[0016] The reinforcing bar stand 1 is provided on the outer periphery of a foundation 11. The planar shape of the foundation 11 is octagonal. The planar shape of the reinforcing bar stand 1 is also octagonal. The reinforcing bar stand 1 has a plurality of reinforcing bar stand units 2 and connecting members 3. The connecting members 3 connect the plurality of reinforcing bar stand units 2 together. As shown in FIGS. 3 and 4, the reinforced concrete frame unit 2 has a first column member 4, a second column member 5, a beam member 6 (construction member), and a brace member 7.

[0017] The first pillar member 4 and the second pillar member 5 are steel angle members extending in the vertical direction. The first pillar member 4 and the second pillar member 5 are arranged with a gap between them in the horizontal direction. In this embodiment, the first pillar member 4 is longer than the second pillar member 5. The connecting member 3 is fixed to the upper end portion of the first pillar member 4 and the second pillar member 5. The upper end portion of each of the first pillar member 4 and the second pillar member 5 is formed with a hole portion 41, 51 (see FIG. 4) through which a bolt for fixing the connecting member 3 is inserted. The lower end portion of each of the first pillar member 4 and the second pillar member 5 is joined to a base plate 44, 54 to which an anchor bolt 42, 52 for fixing to the bottom concrete 12 is fixed.

[0018] The beam 6 is a steel material such as a steel bar or reinforcing bar, and extends horizontally between the first column material 4 and the second column material 5. The beam 6 is installed between the vicinity of the lower end of the first column material 4 and the vicinity of the lower end of the second column material 5. The beam 6 is welded to the first column material 4 and the second column material 5.

[0019] The brace material 7 is a steel material such as a steel bar or reinforcing bar that extends in a straight line. Two brace materials 7 are provided for one of the plurality of reinforcing bar frame units 2. One end of a first brace material 71 of the two brace materials 7 is joined to the vicinity of the lower end of the first column material 4, and the other end is joined to the vicinity of the upper end of the second column material 5. The other of the two brace materials 7, a second brace material 72, is joined to the vicinity of the lower end of the second column material 5, and the other end is joined to the vicinity of the upper end of the first column material 4. The brace material 7 is welded to the first column material 4 and the second column material 5.

[0020] As shown in Fig. 2, the multiple reinforced bar stand units 2 are arranged at equal intervals along the outer periphery of the foundation 11. The multiple reinforced bar stand units 2 are arranged such that the first column members 4 are on the center side of the foundation 11 in a plan view, and the second column members 5 are on the outer periphery side of the foundation 11. In this embodiment, three reinforced bar stand units 2 are arranged between each of adjacent corners 1a of the octagonal external shape of the reinforced bar stand 1. The reinforced bar stand units 2 arranged between adjacent corners 1a of the octagon of the reinforced bar stand 1 are linearly arranged along the side 1b between the adjacent corners 1a of the octagon. The multiple reinforced concrete frame units 2 are placed on the bottom concrete 12 in which the first pillar members 4 and the second pillar members 5 are poured into the bottom of the foundation 11. The lower ends of the first pillar members 4 and the second pillar members 5 are fixed to the bottom concrete 12 by anchor bolts 42, 52 (see Figures 3 and 4).

[0021] As shown in Figures 2 and 3, the connecting member 3 has a first connecting member 31 and a second connecting member 32. The first connecting member 31 and the second connecting member 32 are each an angle member or the like that extends linearly. The first connecting member 31 connects the upper ends of the first column members 4 of the three reinforcing bar stand units 2 arranged between adjacent corners of the octagon of the reinforcing bar stand 1. The second connecting member 32 connects the upper ends of the second column members 5 of the three reinforcing bar stand units 2 arranged between adjacent corners of the octagon of the reinforcing bar stand 1.

[0022] The first connecting member 31 has a hole 311 through which a bolt for fixing the first pillar member 4 is inserted. The second connecting member 32 has a hole 321 through which a bolt for fixing the second pillar member 5 is inserted. The first connecting member 31 and the first pillar member 4 are joined by fastening nuts to bolts inserted into holes 311 formed in the first connecting member 31 and holes 41 formed in the first pillar member 4, and the second connecting member 32 and the second pillar member 5 are joined by fastening nuts to bolts inserted into holes 321 formed in the second connecting member 32 and holes 51 formed in the second pillar member 5.

[0023] The first connecting member 31 and the second connecting member 32 have their respective end portions in the longitudinal direction arranged on a straight line connecting the corners of the octagonal shape of the reinforcing bar frame 1 to the center. The end portions 31a of adjacent first connecting members 31 are fixed, for example, by a backing plate and a bolt. The end portions 32a of adjacent second connecting members 32 are fixed, for example, by a backing plate and a bolt. The first connecting member 31 and the second connecting member 32 each have a hole portion formed in their end portion in the longitudinal direction for inserting a bolt. The end portions of the first connecting member 31 and the end portions of the second connecting member 32 may be fixed to each other by overlapping the hole portions without using a backing plate, and fastening nuts to bolts inserted into the overlapping hole portions.

[0024] Adjacent first column materials 4 on either side of an octagonal corner 1a of the reinforced concrete frame 1 are connected by a first connecting steel material 81 that extends in a straight line, such as a reinforcing bar. The first column materials 4 are formed with holes into which the first connecting steel material 81 is inserted. A threaded portion is formed at the end of the first connecting steel material 81. The first connecting steel material 81 is inserted into the holes of the two first column materials 4, and a lock nut is fastened to the end to connect the two first column materials 4. Adjacent second column members 5 on either side of the octagonal corner 1a of the reinforced concrete frame 1 are connected by second connecting steel members 82 that extend linearly, such as reinforcing bars, in the same manner as the first column members 4. The second column members 5 are formed with holes into which the second connecting steel members 82 are inserted.

[0025] The reinforcing bar stand unit 2 is connected to the reinforcing bar 14 provided on the outside of the reinforcing bar stand 1 by the third connecting steel material 83, and is also connected to the opposing reinforcing bar stand unit 2 through the center 1c of the octagon. Although only some of the third connecting steel materials 83 are shown in FIG. 2, many third connecting steel materials 83 are provided radially throughout the reinforcing bar stand unit 2. The third connecting steel material 83 has two outer steel materials 831, 831 and one inner steel material 832. The outer steel materials 831, 831 and the inner steel material 832 are each a steel material that extends in a straight line, such as a reinforcing bar. The outer steel materials 831, 831 and the inner steel material 832 are arranged in the same straight line, and the inner steel material 832 is arranged between the two outer steel materials 831, 831. The outer steel materials 831, 831 and the inner steel material 832 are joined at their ends by a coupler 833. The first pillar member 4 and the second pillar member 5 are formed with holes 43, 53 (see FIG. 3) into which the third connecting steel member 83 is inserted.

[0026] The outer steel material 831 is inserted into holes 43, 53 of the first column material 4 and the second column material 5, and fixed to the first column material 4 and the second column material 5 with lock nuts. One end 831a of the outer steel material 831 protrudes to the outside of the second column material 5 (the outer periphery side of the foundation 11) and is connected to the reinforcing bar 14 provided on the outside of the reinforcing bar frame 1. The other end 831b of the outer steel material 831 protrudes to the inside of the first column material 4 (the center side of the foundation 11) and is connected to the inner steel material 832 on the inside of the first column material 4 with a coupler 833. The inner steel material 832 has one end 832a connected to an outer steel material 831 fixed to the first column material 4 and the second column material 5 of one of the two reinforced concrete mounting units 2 facing each other through the center of the foundation 11, and the other end 832b connected to the outer steel material 831 fixed to the first column material 4 and the second column material 5 of the other reinforced concrete mounting unit 2.

[0027] The assembly method of the reinforcing bar stand 1 will be explained. First, multiple reinforcing bar stand units 2 are manufactured (reinforcing bar stand unit manufacturing process). The reinforcing bar stand units 2 are manufactured in a factory or the like. One end of the beam material 6 is welded to the first column material 4, and the other end is welded to the second column material 5. One end of the brace material 7 is welded to the first column material 4, and the other end is welded to the second column material 5. The first column material 4 and the second column material 5 are formed with holes 41, 51 for inserting bolts for attaching the connecting material 3, and holes 43, 53 for passing the third connecting steel material 83 through. The connecting member 3 is also formed with holes 311, 321 for inserting bolts that secure the first pillar member 4 and the second pillar member 5, and holes for inserting bolts that connect the end portions together via a backing plate.

[0028] A plurality of reinforcing bar stand units 2 are installed on the bottom concrete 12 of the foundation 11 (reinforcing bar stand unit installation process). At the site, the first column members 4 and the second column members 5 of the plurality of reinforcing bar stand units 2 are erected on the bottom concrete 12. The first column members 4 and the second column members 5 are fixed to the bottom concrete 12 with anchor bolts 42, 52.

[0029] The installed multiple reinforcing bar frame units 2 are connected with connecting materials 3 (connecting process). The first connecting member 31 connects the upper ends of the first column members 4 of the three reinforcing bar stand units 2 arranged between adjacent corners 1a of the octagon of the reinforcing bar stand 1. The second connecting member 32 connects the upper ends of the second column members 5 of the three reinforcing bar stand units 2 arranged between adjacent corners 1a of the octagon of the reinforcing bar stand 1. The first connecting member 31 and the first column member 4 are bolted together, and the second connecting member 32 and the second column member 5 are bolted together. Bolts are inserted into the holes 311 formed in the first connecting member 31 and the holes 41 formed in the first column member 4, and nuts are fastened to bolt the first connecting member 31 and the first column member 4. Bolts are inserted into the holes 321 formed in the second connecting member 32 and the holes 51 formed in the second column member 5, and nuts are fastened to bolt the second connecting member 32 and the second column member 5. Ends 31a of adjacent first connecting members 31 are joined together with a backing plate and bolts. Ends 32a of adjacent second connecting members 32 are joined together with a backing plate and bolts.

[0030] Adjacent first column materials 4 are connected by a first connecting steel material 81, with the octagonal corner 1a of the reinforcing bar frame 1 in between. Adjacent second column materials 5 are connected by a second connecting steel material 82, with the octagonal corner 1a of the reinforcing bar frame 1 in between. The first connecting steel material 81 is inserted into a hole formed in the first column material 4, and a lock nut is fastened to the first connecting steel material 81 to fix the first connecting steel material 81 to the first column material 4. The second connecting steel material 82 is inserted into a hole formed in the second column material 5, and a lock nut is fastened to the second connecting steel material 82 to fix the second connecting steel material 82 to the second column material 5.

[0031] The reinforcing bar stand unit 2 is connected to the reinforcing bar 14 provided on the outside of the reinforcing bar stand 1 by the third connecting steel material 83, and is also connected to the opposing reinforcing bar stand unit 2 through the center 1c of the octagon. The outer steel material 831 of the third connecting steel material 83 is inserted into the holes 43, 53 formed in the first column material 4 and the second column material 5, and a lock nut is fastened to the outer steel material 831 to fix it to the first column material 4 and the second column material 5. The inner steel material 832 and the outer steel material 831 are joined with a coupler 833, and the opposing reinforcing bar stand units 2 are connected to each other by the third connecting steel material 83 through the center 1c of the octagon. In this manner, the reinforcing bar stand 1 is assembled. On the assembled reinforcing bar stand 1, reinforcing bars 16 are provided as shown in FIG.

[0032] Next, the operation and effect of the reinforcing bar stand and the method for assembling the reinforcing bar stand according to this embodiment will be described. In the reinforcing bar stand 1 and the method for assembling the reinforcing bar stand according to the present embodiment, the reinforcing bar stand units 2 are connected to each other by bolting the connecting members 3 to the reinforcing bar stand units 2 to assemble the reinforcing bar stand 1. Therefore, the reinforcing bar stand units 2 are manufactured in advance in a factory or the like, transported to the site, and the reinforcing bar stand units 2 are connected and assembled at the site by the connecting members 3, so that the reinforcing bar stand 1 can be assembled at the site without welding. Therefore, the labor and time required for assembling the reinforcing bar stand 1 at the site can be reduced. Since there is no need to arrange for welding workers to assemble the reinforcing bar stand 1, process management becomes easier. Since the reinforcing bar stand 1 can be assembled in parallel with the assembly work, the construction period can be shortened.

[0033] In addition, in the above embodiment, the first connecting material 31 and the first pillar material 4 are joined by fastening nuts to bolts inserted into hole portions 311 formed in the first connecting material 31 and hole portions 41 formed in the first pillar material 4, and the second connecting material 32 and the second pillar material 5 are joined by fastening nuts to bolts inserted into hole portions 321 formed in the second connecting material 32 and hole portions 51 formed in the second pillar material 5. With this configuration, the joining of the first pillar member 4 and the first connecting member 31, and the joining of the second pillar member 5 and the second connecting member 32 can be performed easily and accurately on site.

[0034] In addition, in the above embodiment, the reinforcing bar stand unit 2 is provided with the brace material 7, so that the reinforcing bar stand unit 2 has a more stable shape, and the reinforcing bar stand unit 2 can be easily installed on site.

[0035] The above describes an embodiment of the reinforced concrete frame and the method for assembling the reinforced concrete frame according to the present invention. However, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the shape of the reinforcing bar rack in a plan view is octagonal, but the shape of the reinforcing bar rack in a plan view may be other than octagonal.

[0036] In the above embodiment, the first connecting member 31 and the first pillar member 4 are joined by fastening a nut to a bolt inserted into the hole 311 formed in the first connecting member 31 and the hole 41 formed in the first pillar member 4, and the second connecting member 32 and the second pillar member 5 are joined by fastening a nut to a bolt inserted into the hole 321 formed in the second connecting member 32 and the hole 51 formed in the second pillar member 5. In contrast, a bolt hole with a threaded portion formed on the inner circumference or a nut may be joined to one of the first connecting member 31 and the first pillar member 4, and a bolt inserted into a hole formed in the other member may be fastened to a bolt hole or a nut of one member. A bolt hole with a threaded portion formed on the inner circumference or a nut may be joined to one of the second connecting member 32 and the second pillar member 5, and a bolt inserted into a hole formed in the other member may be fastened to a bolt hole or a nut of one member.

[0037] In the above embodiment, the reinforcing bar stand unit 2 has two pillar members 4, 5, one beam member 6, and two brace members 7, but the number of each member may be set appropriately. Also, the shape and type of the steel material constituting each member of the reinforcing bar stand unit 2 may be set appropriately. The reinforcing bar stand unit 2 does not necessarily have to be provided with the brace member 7. [Explanation of symbols]

[0038] 1 Reinforced concrete stand 2 Reinforced concrete stand unit 3 Connecting material 4 1st pillar material 5 Second pillar material 6 Beam material (erecting material) 7 Brace material 31 1st connection material 32 Second connection material 41,51,311,321 Hole 42,52 Anchor bolt

Claims

1. A plurality of reinforcing bar stand units arranged at intervals from each other; A connecting member that connects the arranged plurality of reinforcing bar stand units, The reinforcing bar stand unit comprises: a first post member and a second post member spaced apart from each other; A bridging member is provided between the first pillar member and the second pillar member and joined to the first pillar member and the second pillar member, The connecting material is A first connecting member that connects the first column members of each of the plurality of reinforcing bar frame units to each other; and a second connecting member that connects the second column members of each of the plurality of reinforcing bar frame units to each other, The first connecting member and the first pillar member are connected by a bolt, The second connecting member and the second column member are connected to each other by bolts in a reinforced concrete frame.

2. The first connecting member and the first pillar member are joined by fastening a nut to a bolt inserted through a hole formed in the first connecting member and a hole formed in the first pillar member, The steel reinforced concrete frame described in claim 1, wherein the second connecting member and the second column member are joined by tightening nuts onto bolts inserted through holes formed in the second connecting member and holes formed in the second column member.

3. The reinforcing bar stand unit comprises: The reinforced concrete frame according to claim 1 or 2, further comprising a brace member provided between the first pillar member and the second pillar member and joined to the first pillar member and the second pillar member.

4. a reinforcing bar stand unit manufacturing process for manufacturing a reinforcing bar stand unit; A reinforcing bar stand unit installation process for arranging a plurality of the reinforcing bar stand units at intervals from each other; A connecting step of connecting the arranged plurality of reinforcing bar frame units with a connecting material, The reinforcing bar stand unit comprises: a first post member and a second post member spaced apart from each other; A beam member provided between the first pillar member and the second pillar member; A brace material provided between the first pillar material and the second pillar material, The connecting material is A first connecting member that connects the first column members of each of the plurality of reinforcing bar frame units; A second connecting member that connects the second column members of each of the plurality of reinforcing bar frame units, In the steel frame unit installation process, The lower end of the first pillar member and the lower end of the second pillar member are fixed to concrete provided below, In the joining process, The first connecting member and the first pillar member are joined by a bolt; A method for assembling a reinforced concrete frame by bolting the second connecting member and the second column member.

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