In-wall bar arrangement method for construction of reinforcement concrete wall and fixation / suspension tool of in-wall bar arrangement position used therefor

Abstract

To provide an in-wall bar arrangement method for construction of a reinforcement concrete wall and a fixation / suspension tool of an in-wall bar arrangement position used therefor in order to improve workability and accuracy of the bar arrangement position for in-wall bar arrangement work upon construction of the reinforcement concrete wall.SOLUTION: An in-wall bar arrangement method for construction of a reinforcement concrete wall of the invention includes the steps of: arranging a required number of vertical bars at an installation position for constructing the reinforcement concrete wall; preparing fixation / suspension tools 10 on in-wall bar positions on which fixation fittings 17 of lateral bar positions are arranged corresponding to a pitch of a lateral bar arrangement at a different position from the installation position; placing a required number of lateral bars 2 on fixation / suspension tools for the in-wall bar positions using the lateral bar fixation fittings; lifting the fixation / suspension tools of the in-wall bar positions on which the lateral bars have been installed to set it at the installation position; binding and fixing the lateral bars on the vertical bars; and lifting and removing the fixation / suspension tools of the in-wall bar positions.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wall reinforcement construction method for constructing reinforced concrete walls and a hanging jig for fixing the wall reinforcement position used in this method. [Background technology]

[0002] The wall reinforcing bar arrangement process in the construction of a conventional reinforced concrete wall will be described with reference to Figs. 7(a)-(c). After arranging a large number of vertical bars 1, a large number of horizontal bars 2 are tied to the vertical bars 1 with tie wires and fixed in the appropriate position. Before starting the arrangement of the horizontal bars 2, it is necessary to mark the appropriate arrangement position of the horizontal bars. Also, as shown in Fig. 7(b), the reinforcing bar material of the horizontal bars 2 must be transported to the corresponding member position, stored nearby, and taken out according to the work and arranged one by one. As shown in Fig. 7(c), when the work position becomes high, a work table D1 is used and a temporary stage D2 for storing the reinforcing bar material of the horizontal bars 2 is required. Also, if the temporary stage D2 cannot be installed, work and manpower are required to hand over the reinforcing bar material of the horizontal bars 2 to the reinforcing bar worker on the work table D1 as shown by the dashed line in Fig. 7(c). In particular, when the diameter of a single reinforcing bar is large and the length of the reinforcing bar is long, as shown in Figure 7(a), reinforcing bar work M1, M2, and M3 are required at both ends and in the center of the cross bar 2 in order to lift the cross bar 2 to the correct position and secure it with tie wires.

[0003] Patent Document 1 describes that when earthquake-resistant wall reinforcement is performed between a precast concrete wall erected between reinforced concrete columns and the reinforced concrete columns, a wall formwork is assembled between the precast concrete wall and the reinforced concrete column with the earthquake-resistant wall reinforcement in between, a cast-in-place concrete wall is constructed, and the precast concrete wall and the reinforced concrete column are joined together to construct a boundary earthquake-resistant wall, the reinforcement for the cast-in-place wall is arranged by using various mechanical joints such as sleeve joints or lap joints for joining the main reinforcement of the columns, and the cross reinforcement of the cast-in-place wall is arranged so that it rests on the hoop reinforcement of the column reinforcement unit and the joint reinforcement protruding from the side of the PCa intermediate wall (paragraph 0026). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-219929 A Summary of the Invention [Problem to be solved by the invention]

[0005] Problems with the conventional work include marking work for horizontal reinforcing bar arrangement work at the relevant component position, the need for small-scale transportation of reinforcing bar material and securing a storage location (including temporary stage), and when arranging horizontal reinforcing bar, multiple reinforcing bar workers are required to lift the reinforcing bar and set it in the correct position, which increases the amount of labor, especially for thick and long reinforcing bars, and poor workability because the work is done at the relevant component position. Further problems include the large amount of labor required mainly for the work required to lift the reinforcing bar material, the installation of temporary stages, ensuring the accuracy of reinforcing bar arrangement, the risk of accidents caused by reinforcing bar slipping, and dealing with fatigue of reinforcing bar workers when transporting heavy reinforcing bars, etc. The seismic wall reinforcing bar arrangement method of Patent Document 1 does not address such problems.

[0006] In view of the problems with the conventional technology as described above, the present invention aims to provide a wall reinforcement construction method for constructing reinforced concrete walls, which improves the workability of wall reinforcement work when constructing reinforced concrete walls and improves the accuracy of the reinforcement position, and a hanging jig for fixing the wall reinforcement position used in this method. [Means for solving the problem]

[0007] A wall reinforcement construction method for building a reinforced concrete wall to achieve the above-mentioned objective includes the steps of: placing a required number of vertical reinforcements at a construction position where a reinforced concrete wall is to be constructed; preparing a wall reinforcement position fixing hanging jig with horizontal reinforcement position fixing hardware installed corresponding to a specified horizontal reinforcement arrangement pitch at a position separate from the construction position; placing the required number of horizontal reinforcements on the wall reinforcement position fixing hanging jig using the position fixing hardware; lifting the wall reinforcement position fixing hanging jig with the horizontal reinforcements placed on it and setting it at the construction position; tying and fixing the horizontal reinforcements to the vertical reinforcements; and lifting and removing the wall reinforcement position fixing hanging jig.

[0008] According to this wall reinforcement construction method for constructing a reinforced concrete wall, the wall reinforcement position fixing hanging jig prepared at a position different from the construction position where the reinforced concrete wall is constructed has horizontal reinforcement position fixing hardware installed in advance corresponding to a predetermined horizontal reinforcement arrangement pitch, so that the work of marking the horizontal reinforcement position can be reduced, and the horizontal reinforcement can be arranged simply by placing the horizontal reinforcement on the horizontal reinforcement position fixing hardware of the wall reinforcement position fixing hanging jig, so that the workability of the wall reinforcement work can be improved and the accuracy of the reinforcement position can be improved. Also, the wall reinforcement work for constructing the reinforced concrete wall can be completed by lifting the horizontal reinforcement unit with the wall reinforcement position fixing hanging jig, setting it at the construction position where the required number of vertical reinforcements are arranged, tying and fixing the horizontal reinforcements to the vertical reinforcements, and then lifting and removing the wall reinforcement position fixing hanging jig, so that the workability of the wall reinforcement can be improved.

[0009] In the above-mentioned wall reinforcement construction method for building reinforced concrete walls, it is preferable to install a retaining metal fitting for holding down the horizontal reinforcement to prevent the horizontal reinforcement placed on the position fixing metal fitting of the wall reinforcement position fixing hanging jig from falling off.

[0010] In addition, it is preferable that the wall reinforcement position fixing hanging jig has an extendable level adjustment mechanism on its legs, and the position of the cross reinforcement is pre-adjusted to an appropriate height position level by the level adjustment mechanism based on the measurement results of the floor level at the construction position.

[0011] In addition, it is preferable to fine-tune the height position level of the horizontal reinforcement by the level adjustment mechanism after setting the wall reinforcement position fixing hanging jig at the construction position.

[0012] It is also preferable that the wall reinforcement position fixing hanging jig is constructed in a planar shape from a plurality of vertical members and a plurality of horizontal members, and that the horizontal reinforcement position fixing hardware is installed on at least two of the vertical members.

[0013] It is also preferable to shorten the level adjustment mechanism after the horizontal reinforcement and the vertical reinforcement are bound together and before the wall reinforcement position fixing hanging jig is removed.

[0014] It is also preferable to release the pressure on the horizontal reinforcement by the pressure fittings after the horizontal reinforcement and the vertical reinforcement are bound together and before the wall reinforcement position fixing hanging jig is removed.

[0015] The wall reinforcement position fixing hanging jig for achieving the above-mentioned object can be used as the wall reinforcement position fixing hanging jig in the wall reinforcement construction method for building reinforced concrete walls described above.

[0016] According to this wall reinforcement position fixing hanging jig, the wall reinforcement position fixing hanging jig can be prepared at a position different from the construction position where the reinforced concrete wall is constructed, and the wall reinforcement position fixing hardware is installed in advance in accordance with the horizontal reinforcement arrangement pitch, so that the work of marking the horizontal reinforcement position can be reduced, and the horizontal reinforcement can be arranged simply by placing the horizontal reinforcement on the horizontal reinforcement position fixing hardware of the wall reinforcement position fixing hanging jig, so that the workability of the wall reinforcement work can be improved and the accuracy of the reinforcement position can be improved. Also, the wall reinforcement work for the reinforced concrete wall construction can be completed by lifting the horizontal reinforcement unit with the wall reinforcement position fixing hanging jig together with the wall reinforcement position fixing hanging jig, setting it at the construction position where the required number of vertical reinforcements are arranged, tying and fixing the horizontal reinforcements to the vertical reinforcements, and then lifting and removing the wall reinforcement position fixing hanging jig. Effect of the Invention

[0017] According to the method for constructing wall reinforcement bars and the wall reinforcement position fixing suspension jig for constructing a reinforced concrete wall of the present invention, the workability in the wall reinforcement work during the construction of a reinforced concrete wall can be improved, and the accuracy of the reinforcement position can be improved.

Brief Description of the Drawings

[0018] [Figure 1] It is a front view schematically showing the wall reinforcement position fixing suspension jig according to the present embodiment. [Diagram 2] It is a main part side view (a) of the horizontal bar position fixing hardware and the horizontal bar pressing hardware installed on the wall reinforcement position fixing suspension jig of FIG. 1 as viewed from direction A of FIG. 1, a main part side view (b) showing the released state of the horizontal bar pressing hardware, and a main part plan view (c) showing the horizontal bar pressing hardware. [Diagram 3] It is a flowchart for explaining each step of the method for constructing wall reinforcement bars in the construction of a reinforced concrete wall according to the present embodiment. [Figure 4] It is a main part side view showing the wall reinforcement position fixing suspension jig and the level adjusting mechanism for explaining step S05 of FIG. 3. [Diagram 5] It is main part side views (a) to (c) showing the wall reinforcement position fixing suspension jig and the horizontal bar unit for explaining steps S06, S07, S10, and S11 of FIG. 3. [Figure 6] It is a main part plan view similar to FIG. 2(c) showing a modified example in which the position at the time of releasing the horizontal bar pressing hardware in FIGS. 2(a) to (c) is changed. [Figure 7] It is a front view (a) showing the longitudinal and horizontal bar reinforcements for explaining the wall reinforcement work process during the construction of a conventional reinforced concrete wall, a main part side view (b) during the work, and a main part side view (c) during the high-altitude work.

Modes for Carrying Out the Invention

[0019] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a front view showing a schematic diagram of a hanging jig for fixing a wall reinforcement position according to this embodiment. Fig. 2 shows a side view (a) of the main part of the horizontal reinforcement position fixing hardware and the horizontal reinforcement pressing hardware installed in the hanging jig for fixing a wall reinforcement position shown in Fig. 1, seen from the direction A in Fig. 1, a side view (b) of the main part showing the released state of the horizontal reinforcement pressing hardware, and a plan view (c) of the main part showing the horizontal reinforcement pressing hardware.

[0020] As shown in FIG. 1, the wall reinforcement position fixing hanging jig 10 according to this embodiment is configured in a frame shape from multiple horizontal members 11, 12 and multiple vertical members 13-16. The horizontal members 11, 12 and the vertical members 13-16 are configured in a planar shape as a whole from L-shaped steel or the like, and are integrated by welding, bolts and nuts, or the like. Hook-shaped horizontal reinforcement position fixing hardware 17 is installed on each vertical member 13-16 by welding or the like in correspondence with the arrangement pitch of the horizontal reinforcement 2 in the vertical direction. Each horizontal reinforcement position fixing hardware 17 is aligned horizontally at the same height position and is positioned and installed so that it can horizontally support one horizontal reinforcement 2. The wall reinforcement position fixing hanging jig 10 only needs to have at least two vertical members, and for example, the vertical members 14, 15 may be omitted.

[0021] As shown in Fig. 2(a), each horizontal bar position fixing hardware 17 in Fig. 1 has a receiving portion 17a that receives and fixes the horizontal bars 2 in position, and a joint portion 17b that is joined to each vertical member 13-16 by welding or the like, and can be manufactured as a single unit, for example, by bending a steel plate. Also, a single piece of angle iron may be used with different angles. A horizontal bar unit 20 consisting of multiple horizontal bars 2 is constructed by placing the multiple horizontal bars 2 required for the wall reinforcement position fixing hanging jig 10 in Fig. 1 on the receiving portions 17a of each horizontal bar position fixing hardware 17 from the bottom to the top and fixing them in position.

[0022] The wall reinforcement position fixing hanging jig 10 also has a pair of left and right level adjustment mechanisms 19, 19 on the lower horizontal member 12 that serves as the legs. The level adjustment mechanism 19 is configured so that a bolt is screwed into the horizontal member 12, and can adjust its height by rotating the bolt. Before the horizontal reinforcement unit 20 is set at the construction position by the wall reinforcement position fixing hanging jig 10, the vertical position of the horizontal reinforcement 2 is adjusted in advance to an appropriate height position level by the level adjustment mechanism 19 by rotating the bolt based on the measurement result of the floor level at the construction position. Note that more than one pair of level adjustment mechanisms 19, 19 may be provided depending on the horizontal length of the wall reinforcement position fixing hanging jig 10.

[0023] The receiving portion 17a of the horizontal bar position fixing hardware 17 is inclined diagonally upwards, and when the horizontal bar 2 is placed on it, it is unlikely to come off the receiving portion 17a. However, if the wall reinforcement position fixing hanging jig 10 is inclined overall from the vertical direction or if the horizontal bar 2 is subjected to external force from an unexpected direction, there is a risk that the horizontal bar 2 will come off the receiving portion 17a and fall off. Therefore, a horizontal bar holding hardware 18 is provided to prevent such falling off.

[0024] A pair of horizontal bar pressing hardware 18, 18 for pressing each horizontal bar 2 from the bottom to the top supported by each horizontal bar position fixing hardware 17 of the wall reinforcement position fixing hanging jig 10 in Fig. 1 is installed vertically between the vertical members 13, 14 and between the vertical members 15, 16. As shown in Fig. 2(a), the horizontal bar pressing hardware 18 has a straight portion 18a extending vertically in a straight line, a horizontal portion 18b extending horizontally from the straight portion 18a perpendicularly to the horizontal bars 2 of each stage, and a pressing portion 18c protruding vertically downward from the tip of the horizontal portion 18b to press the horizontal bars 2 of each stage, and is integrally formed from, for example, a steel bar. Note that either one of the horizontal bar pressing hardware 18, 18 may be omitted.

[0025] 2(a), the pressing portion 18c presses the horizontal bars 2 placed on the receiving portion 17a toward the joint portion 17b of the horizontal bar position fixing hardware 17, so that the horizontal bars 2 do not come off the receiving portion 17a and fall off. In order to reliably maintain this state of the horizontal bar pressing hardware 18, the pressing portion 18c of the horizontal bar pressing hardware 18 is fastened to the vertical member 15 using a rope member 21 such as a rope or wire. Since the horizontal bar pressing hardware 18 is integral in the vertical direction, it is sufficient to fasten the horizontal bars 2 at any stage with the rope member 21.

[0026] The release of the horizontal bar pressing hardware 18 will now be described. As shown in Figures 2(b) and (c), a protruding portion 22 is provided on the horizontal member 12 near the bottom of the vertical member 15, and a base 23 on which the lower end 18d of the straight portion 18a of the horizontal bar pressing hardware 18 rests is provided at a predetermined height on the protruding portion 22. When the horizontal bar pressing hardware 18 is in a state of pressing the horizontal bars 2 as shown in Figure 2(a), the lower end 18d of the straight portion 18a abuts against the bottom 22a of the protruding portion 22 as shown by the dashed line in Figure 2(b). To release the horizontal bar pressing hardware 18 from pressing the horizontal bars 2 from this state, slide the straight portion 18a upward, then move it in the horizontal direction B as shown in Fig. 2(c), and slide it downward slightly so that the lower end 18d rests on the base 23, so that the pressing portion 18c of the horizontal bar pressing hardware 18 moves upward away from the horizontal bars 2 of the receiving portion 17a, and the horizontal bar pressing hardware 18 enters the released state, as shown in Fig. 2(b). To reliably maintain this released state, the horizontal portion 18b of the horizontal bar pressing hardware 18 is fastened to the vertical member 15 by tying it with a rope member 24 such as a rope or wire, as shown in Fig. 2(b).

[0027] Next, each step of the wall reinforcement construction method for constructing a reinforced concrete wall according to this embodiment will be described with reference to Figs. 1 to 5. Fig. 3 is a flow chart for explaining each step of the wall reinforcement construction method for constructing a reinforced concrete wall according to this embodiment. Fig. 4 is a side view of the main part showing the wall reinforcement position fixing hanging jig and the level adjustment mechanism for explaining step S05 in Fig. 3. Fig. 5 is side views (a) to (c) of the main part showing the wall reinforcement position fixing hanging jig and the horizontal reinforcement unit for explaining steps S06, S07, S10, and S11 in Fig. 3. Note that the number of horizontal reinforcements in Figs. 5(a) to (c) is different from that in Fig. 1 for convenience of illustration.

[0028] As shown in Figure 3, the wall reinforcement construction method for constructing a reinforced concrete wall involves preparing the wall reinforcement position fixing hanging jig 10 shown in Figure 1 in a yard separate from the construction position where the reinforced concrete wall is to be constructed (S01). As shown in Figures 1 and 2(a), horizontal reinforcement position fixing hardware 17 is installed on the wall reinforcement position fixing hanging jig 10 in accordance with the horizontal reinforcement arrangement pitch. In addition, the required number of vertical reinforcements are arranged at the construction position where the reinforced concrete wall is to be constructed (S02).

[0029] Next, the required number of horizontal reinforcement bars 2 are placed on the receiving parts 17a of the horizontal reinforcement position fixing hardware 17 in the wall reinforcement position fixing hanging jig 10 in Fig. 1 to construct the horizontal reinforcement unit 20 (S03). Note that in this step S03, the wall reinforcement position fixing hanging jig 10 can arrange the horizontal reinforcement bars 2 whether it is placed horizontally or vertically.

[0030] Next, the horizontal bar pressing hardware 18 is slid downward from the state shown in Fig. 2(b) to set it so that the pressing part 18c presses the horizontal bar 2 of the receiving part 17a as shown in Fig. 2(a) to prevent the horizontal bar 2 from falling off (S04). At this time, the pressing part 18c of the horizontal bar pressing hardware 18 is fastened to the vertical member 15 by the rope member 21, thereby fixing the horizontal bar pressing hardware 18 and reliably preventing it from falling off.

[0031] Next, the pair of left and right level adjustment mechanisms 19, 19 in Fig. 1 are expanded or contracted by rotating the bolts based on the measurement results of the floor level at the construction position, and adjusted so that the lowest position of the horizontal reinforcement 2 is at an appropriate height position level (S05). For example, as shown in Fig. 4, when only the lowest horizontal reinforcement 2A is installed in advance relative to the vertical reinforcement 1 at the construction position before the installation of the horizontal reinforcement unit 20 in Fig. 1, the level adjustment mechanism 19 adjusts the height so that the lowest horizontal reinforcement 2 of the horizontal reinforcement unit 20 is at an appropriate height position level relative to the installed horizontal reinforcement 2A. This makes it possible to accommodate cases where the interval between the lowest horizontal reinforcement is different.

[0032] Next, as shown in Fig. 5(a), the wall reinforcement position fixing hanging jig 10 with the integrated horizontal reinforcement unit 20 (Fig. 1) is lifted by a crane (S06), and as shown in Fig. 5(b), it is set at the construction position where the required number of vertical reinforcements 1 were arranged in step S02 (S07). The required number of vertical reinforcements 1 are arranged in the direction perpendicular to the paper surface of Fig. 5(b). Also, the horizontal reinforcement holding hardware 18 is not shown in Fig. 5(b).

[0033] If the wall reinforcement position fixing hanging jig 10 and the horizontal reinforcement unit 20 are installed on the floor surface S at the construction position as described above, the height of the level adjustment mechanisms 19, 19 is adjusted in step S05 to bring the horizontal reinforcement 2 to the appropriate height position, so the reinforcement position of the horizontal reinforcement 2 is also in the appropriate position. For example, as shown in Figure 4, the horizontal reinforcement 2 at the bottom of the horizontal reinforcement unit 20 is at the appropriate height position level for the horizontal reinforcement 2A already installed at the bottom of the construction position. Even if there is unevenness in the vertical direction of the paper surface of the floor surface S in Figure 4, the height of each level adjustment mechanism 19, 19 is adjusted in step S05, so no further measures against unevenness are necessary. It can also be used when the horizontal reinforcement interval at the bottom level is different.

[0034] Next, for the horizontal bar unit 20 set at the installation position, fine adjustment of the height position is performed, as necessary, by extending or contracting the level adjustment mechanisms 19, 19 (S08).

[0035] Next, in the set position shown in FIG. 5(b), each horizontal reinforcement 2 of the horizontal reinforcement unit 20 (FIG. 1) is tied and fixed to the vertical reinforcement 1 with a tie wire (S09).

[0036] Next, as shown in Figure 5(c), the level adjustment mechanism 19 of the wall reinforcement position fixing hanging jig 10 is shortened and moved away from the installed position (S10), the horizontal reinforcement holding hardware 18 is slid upward from the state shown in Figure 2(a) to the released state as shown in Figure 2(b), and the horizontal reinforcement holding hardware 18 is fastened by the rope member 24 (S11). This completes the preparation for removal of the wall reinforcement position fixing hanging jig 10, and by shortening the level adjustment mechanism 19, the wall reinforcement position fixing hanging jig 10 can be easily removed.

[0037] Next, the wall reinforcement position fixing hanging jig 10 is lifted and removed by a crane together with the horizontal reinforcement holding hardware 18 and the level adjustment mechanism 19 (S12). As a result, the horizontal reinforcement 2 of the horizontal reinforcement unit 20 in Fig. 1 becomes one with the vertical reinforcement 1 at the construction position (see Fig. 7(a)), and the wall reinforcement is completed. After the wall reinforcement is completed, the formwork is installed, concrete is poured, and the formwork is removed to construct a reinforced concrete wall.

[0038] According to the wall reinforcement construction method for constructing reinforced concrete walls according to this embodiment, the following effects are achieved. (1) Marking work can be reduced because horizontal reinforcement position fixing hardware 17 is installed in advance on the hanging jig for fixing the wall reinforcement position. (2) Reinforcement accuracy can be ensured. (3) Small transportation and storage space for reinforcing bar material can be reduced (including reduction in temporary stage D2 in Figure 7(c)). (4) Reinforcing bar lifting work when placing horizontal reinforcement at the construction position can be reduced and the labor of reinforcing bar workers can be reduced, which is particularly effective when using thick and long reinforcing bars. (5) Reinforcing bar workers' fatigue can be reduced by changing the work procedure. (6) Workability of wall reinforcement can be improved by lifting with the hanging jig for fixing the wall reinforcement position and ground assembly work. (7) Accidents caused by reinforcing bar slipping can be prevented.

[0039] It is also possible to preassemble a reinforcing bar unit (vertical and horizontal reinforcing bar unit) in which vertical and horizontal reinforcing bars are integrated in a separate yard. However, compared to this embodiment, the horizontal reinforcing bar unit as in this embodiment has higher reinforcing bar arrangement accuracy, especially when using large diameter reinforcing bars and considering the need to ensure reinforcing bar arrangement accuracy. In addition, the vertical and horizontal reinforcing bar unit has the following problems. (a) It is necessary to match the position of the reinforcing bar from the floor with the position of the vertical reinforcing bar of the pre-assembled vertical and horizontal reinforcing bar unit. (b) The floor surface where the vertical reinforcing bars are to be installed has planned level differences and actual unevenness, so a troublesome process of aligning the level of the bottom end of the vertical reinforcing bar is required, and there is a risk of the vertical reinforcing bar bending due to its own weight, causing the reinforcing bar arrangement to become distorted. (c) It is necessary to take measures in terms of safety and quality so that the vertical reinforcing bars do not fall out when lifting and moving from a separate yard. In contrast, the horizontal reinforcing bar unit of this embodiment does not have such problems.

[0040] Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to these, and various modifications are possible within the scope of the technical concept of the present invention. For example, in the wall reinforcement position fixing hanging jig 10 in Fig. 1, the horizontal reinforcement position fixing hardware 17 is installed on multiple vertical members 13 to 16, but the present invention is not limited to this, and it is sufficient to install the horizontal reinforcement position fixing hardware 17 on at least two of the vertical members, and in this case, it is preferable to determine the positions and number of vertical members on which the horizontal reinforcement position fixing hardware 17 is installed within a range in which the horizontal reinforcement 2 does not bend due to its own weight.

[0041] 2(a)-(c), the horizontal bar pressing hardware 18 may be slid upward from the state shown in FIG. 2(a) and moved in the diagonal direction C as shown in FIG. 6, so that the pressing portion 18c is also separated horizontally from the horizontal bar 2. A hook-shaped receiving hardware 26 is provided at a predetermined height on an L-shaped steel 25 fixed to the frame member 12, and the released horizontal bar pressing hardware 18 is temporarily placed on the receiving hardware 26. In this case, it is preferable to fasten the horizontal bar pressing hardware 18 with a rope member 24 as in FIG. 2(b). [Industrial Applicability]

[0042] According to the present invention, it is possible to improve the workability of wall reinforcement work when constructing reinforced concrete walls, and to improve the accuracy of the reinforcement positioning. In particular, it is possible to improve the workability of wall reinforcement work when using long, large-diameter reinforcing bars, and to reduce the work of lifting reinforcing bars when placing horizontal reinforcement at the construction position, and to reduce the labor required for reinforcing bar workers. [Explanation of symbols]

[0043] 1 Vertical Stripes 2 Horizontal Stripes 10 Wall reinforcement position fixing jig 11,12 Lateral members 13~16 Vertical members 17 Horizontal bar position fixing hardware 17a Receiving part 17b Joint 18 Horizontal bar presser 18a Straight section 18b Horizontal part 18c Presser foot 18d bottom end 19 Level adjustment mechanism 20 Horizontal Reinforcement Unit 21,24 Rope members 22 Protruding part 22a bottom 23 Pedestal S floor surface

Claims

1. A step of placing a required number of vertical reinforcements at a construction position for constructing a reinforced concrete wall; A step of preparing a wall reinforcement position fixing hanging jig on which a horizontal reinforcement position fixing hardware is installed corresponding to a predetermined horizontal reinforcement arrangement pitch, at a position different from the construction position; A process of arranging a required number of horizontal reinforcements on the wall reinforcement position fixing hanging jig using the position fixing hardware; A process of lifting the wall reinforcement position fixing hanging jig on which the horizontal reinforcement is arranged and setting it at the construction position; bundling and fixing the transverse reinforcement to the longitudinal reinforcement; and a step of lifting and removing the wall reinforcement position fixing hanging jig.

2. 2. A wall reinforcement construction method for constructing reinforced concrete walls as described in claim 1, further comprising the step of installing a pressure metal fitting for holding down the horizontal reinforcement to prevent the horizontal reinforcement from falling off the position fixing metal fitting of the wall reinforcement position fixing hanging jig.

3. The wall reinforcement position fixing hanging jig has a level adjustment mechanism that can be extended and retracted on its legs, 2. The wall reinforcement construction method for constructing reinforced concrete walls according to claim 1, wherein the position of the horizontal reinforcement is pre-adjusted by the level adjustment mechanism so as to be at an appropriate height position level based on the measurement results of the floor level at the construction position.

4. 4. The wall reinforcement construction method for constructing reinforced concrete walls according to claim 3, wherein the height position level of the horizontal reinforcement is fine-tuned by the level adjustment mechanism after the wall reinforcement position fixing hanging jig is set at the construction position.

5. The wall reinforcement position fixing hanging jig is configured in a planar shape from a plurality of vertical members and a plurality of horizontal members, 2. The wall reinforcement construction method for constructing reinforced concrete walls according to claim 1, wherein the horizontal reinforcement position fixing hardware is installed on at least two of the vertical members.

6. 4. The wall reinforcement construction method for constructing reinforced concrete walls according to claim 3, wherein the level adjustment mechanism is shortened after the horizontal reinforcement and the vertical reinforcement are bound together and before the wall reinforcement position fixing hanging jig is removed.

7. 3. A wall reinforcement construction method for constructing reinforced concrete walls as described in claim 2, wherein the pressure on the horizontal reinforcement by the pressure metal fittings is released after the horizontal reinforcement and the vertical reinforcement are bound together and before the wall reinforcement position fixing hanging jig is removed.

8. A hanging jig for fixing a wall reinforcement position that can be used as the wall reinforcement position fixing hanging jig in the wall reinforcement construction method for reinforced concrete wall construction according to any one of claims 1 to 7.

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