Reinforcement bar assembly support bracket for beams and columns.

Abstract

To provide a fixture capable of easily attaching and fixing a hairpin-shaped rebar on an angle column for beam reinforcement assembly of a reinforcement concrete beam.SOLUTION: In a beam assembly method comprising: horizontally attaching a hairpin-shaped rebar C on an angle column A1 of a beam reinforcement assembly column erected with intervals in a longitudinal direction of a beam to temporarily place a long beam upper main bar; attaching set-up bars D on both sides of the hairpin-shaped rebar to be arranged along both sides of the beam; and connecting consecutively with intervals lower bars of stirrup bars to hold an opening in an erected posture along the set-up bars, a fixture to attach and fix the hairpin-shaped rebar to the angle column is provided with a fixing part 15 clamping a front and rear of an edge of one flange part B of two flange parts B, B' forming the angle column by fastening with a bolt 13, and a mount part 16 on which the hairpin-shaped rebar is mounted.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] In the assembly of the beam reinforcement of a reinforced concrete beam, in order to arrange the setup bars for attaching the lower reinforcement of the stirrup bars side by side at predetermined heights on both sides in the longitudinal direction of the beam, the invention relates to a fixing fitting for attaching and fixing a hairpin bar on which the setup bars are placed to an angle support made of an angle material of a beam reinforcement assembly support.

Background Art

[0002] As an example of a method for assembling the beam reinforcement of a reinforced concrete beam, as shown in FIGS. 9(a1) and (a2), beam reinforcement assembly supports A are arranged in parallel at appropriate intervals along the longitudinal direction of the beam, and a hairpin bar C is welded and fixed to the flange portion of the angle support A1 of these beam reinforcement assembly supports so as to be horizontally arranged at a predetermined height. Also, as shown in FIGS. 10(b1) and (b2), using a ready-made metal fitting, a substantially U-shaped main body is loosely fitted onto the angle support A1 with the hairpin bar C inserted therethrough, and a bolt is tightened and fixed at an appropriate height position.

[0003] In any of the methods, next, setup bars D are placed on both sides of the hairpin bar C and tied and fixed with a binding wire or the like. The stirrup bars are arranged so as to surround the beam main reinforcement in the vertical direction. First, the lower bars of the substantially U-shaped stirrup bars divided into two parts are tied to the setup bars with a binding wire or the like in a state where the opening is upward so as to surround the beam lower main reinforcement and are arranged in a standing state. Similarly, the lower bars of a plurality of stirrup bars are continuously arranged at intervals on the setup bars provided along both sides of the beam. After the reinforcement of the pressure-resistant board around the beam is arranged, concrete is placed, and the lower sides of the beam lower main reinforcement and the lower bars of the stirrup bars are buried. After placing the beam upper main reinforcement on the angle material installed at the upper end of the angle support, the upper bars of the stirrup bars are dropped from above and tied and fixed to the lower bars with a binding wire or the like.

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, as shown in Figures 9(a1) and (a2), the method of welding and fixing the reinforcement bars to the angle supports had problems such as the effort required for welding, the effort of bringing in the welding machine during the complicated reinforcement work, and the inability to adjust the height after welding.

[0005] Furthermore, as shown in Figures 10(b1) and (b2), in the method using pre-fabricated hardware, the main body is inserted into the support portion of the angle column through the open section, and the stile is inserted into the through holes provided at both ends of the open section. The bolt at the base is then tightened, and the tip of the bolt comes into contact with the inner surface of the angle material, securing it in place by being sandwiched between the stile and the stile.

[0006] The angle support is configured to have an upper support made of reinforcing bars with angle material on the inside and a holding part for holding the reinforcing bars, which serves as a horizontal member for supporting the main reinforcement bars on the beam at the upper end. This upper support can be slid up and down to adjust the height of the main reinforcement bars on the beam.

[0007] In other words, when the reinforcing bars of the angle support and the upper support overlap, and it is necessary to attach the aforementioned prefabricated metal fittings to that location, tightening the bolts causes the bolt tips to come into contact with the arcuate surface of the outer circumference of the reinforcing bar, resulting in extreme instability and unreliability for secure fastening. Furthermore, there were problems such as the inability to adjust the height of the upper support after the bolts had been tightened.

[0008] The present invention has been made in view of the above-mentioned conventional problems, and aims to provide a fixing fitting that allows for the easy and effortless attachment and fixing of reinforced concrete beam bars to angle supports in the assembly of beam reinforcement. [Means for solving the problem]

[0009] The fixing brackets to solve the above problem are for temporarily placing long main reinforcement bars on beams. Standing set A beam reinforcement assembly support comprising an angle support and an upper support provided inside the angle support so as to be vertically slidable, wherein the angle support is Attach the hairpin horizontally. A fixing bracket for a beam reinforcement assembly support column, for fixing in place,The angle support column comprises a fixing part that clamps the front and back edges of one of the two flange parts formed by tightening a bolt, and a mounting part on which the hairpin is placed. The fixing portion includes a contact piece and a fixing piece formed by bending the substrate, and a bolt, wherein the contact piece is provided so as to be able to contact one side surface of the edge of the flange portion, the fixing piece is located on the other side surface of the edge of the flange portion and has a screw hole for screwing in the bolt, the screw hole is provided so that the bolt can move back and forth from the fixing piece side to the contact piece side, and the tip of the bolt is provided so as to be able to contact the other side surface of the edge of the flange portion. This is the gist of it.

[0010] Regarding the fixing bracket, the mounting portion described above may be provided at both ends in a direction perpendicular to the tightening direction of the clamping portion to the flange portion.

[0011] Regarding the fixing bracket, a fall prevention part may be provided in the mounting part described above to prevent the hairpin from falling off.

[0012] Regarding the fixing bracket, the anti-detachment portion may be a projection extending from the mounting portion described above.

[0013] Regarding the fixing bracket, the fall prevention part may be a concave recess provided in the mounting part described above. [Effects of the Invention]

[0014] According to the present invention, the reinforcement bars can be easily attached to a predetermined height position by tightening bolts to secure them to the end edge of the flange portion of the angle support column, placing the reinforcement bars on the mounting portion, and securing them with binding wire, without the need for welding.

[0015] Furthermore, since a bolt can be tightened to the edge of one of the two flange portions forming the angle support, it can be securely fixed without hitting the reinforcing bars of the upper support, even when the angle support and the reinforcing bars of the upper support overlap.

[0016] Because it is secured by tightening bolts, the height can be easily adjusted by loosening the bolts if necessary. [Brief explanation of the drawing]

[0017] [Figure 1] A perspective view showing Embodiment 1 of the present invention. [Figure 2]Perspective view showing the mounting state of Embodiment 1 of the present invention. [Figure 3] Perspective view showing Embodiment 2 of the present invention. [Figure 4] Perspective view showing the mounting state of Embodiment 2 of the present invention. [Figure 5] Perspective view showing Construction Procedure 1 using Embodiment 2 of the present invention. [Figure 6] Perspective view showing Construction Procedure 2 using Embodiment 2 of the present invention. [Figure 7] Perspective view showing Construction Procedure 3 using Embodiment 2 of the present invention. [Figure 8] Perspective view showing Construction Procedure 4 using Embodiment 2 of the present invention. [Figure 9] Perspective view showing a conventional method for fixing kanzashi bars. [Figure 10] Perspective view showing a conventional method for fixing kanzashi bars.

Mode for Carrying Out the Invention

[0018] Embodiments of the fixing metal fitting of the present invention will be described in detail with reference to the drawings.

[0019] The following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses in any way.

[0020] Figs. 1 - 2 show Embodiment 1 of the fixing metal fitting. The fixing metal fitting of the present invention is for attaching and fixing a kanzashi bar C in the horizontal direction to an angle support A1 erected in the vertical direction. The fixing metal fitting of the present invention is attached to one of the flange portions B, B' forming the L-shaped angle support A1.

[0021] The fixing bracket of the present invention comprises a bracket body 10 and a bolt 13. The bracket body 10 is made by bending a base plate 11 made of thin steel plate into a U-shape, with one end provided as a contact piece 12a that abuts against the flange portion B of the angle support column A1, and a fixing piece 12b on the other end so that the bolt 13 can move back and forth toward the contact piece 12a. The fixing piece 12b is provided with a screw hole 14 into which the bolt 13 is screwed. The bolt 13 is inserted from the fixing piece 12b toward the contact piece 12a.

[0022] In other words, by tightening the bolt 13 with the contact piece 12a in contact with the flange portion B of the angle support A1, a fixing portion 15 is formed that can clamp both the front and back edges of the flange portion B. The bolt 13 is inserted in the front-to-back direction of the flange portion B, and its tip abuts against one side of the edge of the flange portion B. The contact piece 12a abuts against the other side of the edge of the flange portion B.

[0023] The metal fitting body 10 is provided with mounting portions 16, 16 on which the hairpin reinforcement C is placed by bending the tip of the contact piece 12a of the base plate 11 outward again. The mounting portions 16 are provided on mounting pieces 18 that extend from the contact piece 12a in the tightening direction to the flange portion B of the fixing portion 15, that is, in the insertion direction of the bolt 13. The mounting piece 18 has mounting portions 16, 16 at both ends in a direction perpendicular to the tightening direction to the flange portion B of the fixing portion 15. In this embodiment, the mounting portions 16, 16 are provided at both the upper and lower ends of the mounting piece 18, and the hairpin reinforcement C can be placed on the upper mounting portion 16.

[0024] The mounting sections 16, 16 have concave recesses 17 into which the hairpin reinforcing bars C fit, preventing the hairpin reinforcing bars C from falling out.

[0025] Figures 3 and 4 show Embodiment 2 of the fixing bracket. Embodiment 2 differs from Embodiment 1 in the shape of the bracket body. The bracket body 20 has a base plate 21 made of thin steel plate, with the upper and lower ends bent to provide contact pieces 22a, 22a that abut against the flange portion B of the angle support A1. The base end of the base plate 21 is bent into an L shape to provide a fixing piece 22b so that a bolt 23 can move back and forth toward the contact pieces 22a, 22a, and a screw hole 24 is provided in the fixing piece 22b for screwing the bolt 23 into.

[0026] In other words, by tightening the bolt 23 with the contact pieces 22a, 22a in contact with the flange portion B of the angle support A1, a fixing portion 25 is formed that can clamp the flange portion B.

[0027] The tip portion of the substrate 21 beyond the contact pieces 22a, 22a becomes a mounting portion 26, 26 on which the hairpin reinforcement C can be placed. The mounting portion 26 extends from the contact piece 22a toward the tightening direction of the fixing portion 25 toward the flange portion B, that is, toward the insertion direction of the bolt 23, and is provided with projections 27, 27 extending vertically at its tip to prevent the hairpin reinforcement C from falling off.

[0028] 28 is an elliptical through-hole provided in the substrate 21, which serves as a catch for the binding wire when fixing the reinforcing bar C, and also promotes the filling of concrete.

[0029] Next, the method of using the fixing bracket of the present invention will be described with reference to Embodiment 2.

[0030] Figures 5-8 are perspective views showing construction steps 1-4 for beam reinforcement assembly using the fixing bracket of the present invention.

[0031] Figure 5 shows construction procedure 1, in which beam reinforcement assembly support columns A are arranged in parallel at appropriate intervals along the longitudinal direction of the beam. In Figure 5, two beam reinforcement assembly support columns A are arranged in parallel, but if the beam width is large, the number of columns may be increased as appropriate.

[0032] The front and back edges of the flange portion B of the angle support A1 of the beam reinforcement assembly support A are clamped by the fixing portion 25 of the metal fitting body 20, thereby fixing the metal fitting body 20. The mounting height of the metal fitting body 20 can be easily adjusted by loosening the bolt 23. When three or more beam reinforcement assembly support A are arranged in parallel, it is not necessary to install them in two places; they should be installed as appropriate considering the weight of the reinforcement they will support.

[0033] Next, the hairpin reinforcing bar C is placed on the mounting portion 26 of the metal fitting body 20 and secured with binding wire. At this time, the projection 27 of the metal fitting body 20 prevents the hairpin reinforcing bar C from falling off the mounting portion 26, and the hairpin reinforcing bar can be temporarily placed on the mounting portion 26,26, so the worker can use both hands to secure it with binding wire.

[0034] After fixing multiple reinforcing bars C, the setting bars D are secured with binding wire along the longitudinal direction of the beam.

[0035] Figure 6 shows construction procedure 2. Insert the lower part of the roughly U-shaped stirrup reinforcement E1 with the open end facing upwards from below the setting reinforcement D. Hook the hook portion of the lower part of the stirrup reinforcement E1 onto the setting reinforcement D and temporarily place it in position. Adjust the spacing between the lower parts of the stirrup reinforcement E1 as appropriate and secure it with binding wire. Temporarily place the main reinforcement F2 under the beam on top of the lower part of the stirrup reinforcement E1, adjust the spacing between the main reinforcement F2 as appropriate and secure it with binding wire.

[0036] Figure 7 shows construction procedure 3, in which the G1 reinforcement bars for the pressure slab around the beam are placed. By dividing the stirrup bars into upper and lower sections, the height of the beam reinforcement during the work can be reduced, thereby suppressing accidents such as the beam reinforcement tipping over or collapsing during the reinforcement work for the pressure slab.

[0037] Figure 8 shows construction procedure 4, in which the concrete for the pressure slab and the lower part of the beam is poured and hardened, and then the reinforcement work for the upper part of the beam is carried out. The height of the upper support column A2 of the beam reinforcement assembly support column A is adjusted, but since the bolt 23 of the fixing bracket does not come into contact with the reinforcement of the upper support column A2, the height of the upper support column A2 can be adjusted even after the fixing bracket is installed. An angle material is fixed to the holding part of the upper support column A2 and the main reinforcement F1 on the upper beam is temporarily placed. The spacing between the main reinforcement F1 on the upper beam is adjusted as appropriate and fixed with binding wire. The open part of the upper reinforcement E2 of the stirrup is dropped downwards from above the main reinforcement F1 on the upper beam and fixed with binding wire to the lower reinforcement E1 of the stirrup. After the reinforcement work for the beam is completed, the surrounding concrete formwork is erected and concrete is poured to form the reinforced concrete beam and pressure slab. Although this construction procedure describes the case where the pressure-resistant slab and reinforced concrete beam are formed together, the fixing bracket of the present invention can also be used when a reinforced concrete beam with a high beam depth is formed by dividing it into upper and lower sections. [Explanation of Symbols]

[0038] 10, 20 Metal fittings 11, 21 circuit boards 12a, 22a Contact piece 12b, 22b fixed piece 13, 23 volts 14, 24 screw holes 15, 25 Fixed part 16, 26 Mounting section 17. Indentation 18 mounting piece 27 Protrusion 28 Through-holes A. Beam reinforcement assembly support column A1 Angle support A2 upper support B, B' flange section C Kanzashi muscle D. Procedure E1 Stirrup lower reinforcement E2 Stirrup reinforcement upper bar F1 Main reinforcement on beam F2 Beam bottom main reinforcement G Pressure-resistant plate G1 Pressure-resistant slab reinforcement

Claims

1. A beam reinforcement assembly support comprising an angle support erected for temporarily holding long main reinforcement bars on a beam, and an upper support provided inside the angle support so as to be vertically slidable, wherein a beam reinforcement fixing fitting for a beam reinforcement assembly support is provided for horizontally attaching and fixing reinforcement bars to the angle support, A fixing part that clamps the front and back edges of one of the two flange portions forming the angle support column by tightening a bolt, It comprises a mounting section for placing the aforementioned hairpin, The fixing portion includes a contact piece and a fixing piece formed by bending the substrate, and a bolt. The abutment piece is provided so as to be able to abut against one side surface of the edge of the flange portion. The fixing piece is located on the other side of the edge of the flange portion and has a screw hole for screwing in the bolt. The screw hole is provided so that the bolt can move back and forth from the fixing side to the contact side. The bolt is provided such that its tip can abut against the other side of the edge of the flange portion. Reinforcement bar assembly bracket for beams and support columns.

2. The beam reinforcement assembly support support bracing fitting according to claim 1, wherein the mounting portion is provided at both ends in a direction perpendicular to the tightening direction of the fixing portion to the flange portion.

3. The beam reinforcement assembly support bracket for fixing reinforcement bars according to claim 1 or 2, wherein the mounting portion is provided with a fall prevention portion for preventing the reinforcement bars from falling off.

4. The beam reinforcement assembly support support fixing fitting according to claim 3, wherein the anti-detachment portion is a projection extending from the previously described mounting portion.

5. The beam reinforcement assembly support support fixing bracket according to claim 3, wherein the fall prevention part is a concave recess provided in the mounting part described above.

Images