JP2023175115A - Wall reinforcement arrangement method - Google Patents

Abstract

To ensure pre-assembling a wall reinforcement used for a reinforced concrete wall in which a plurality of facility openings are formed as a three-dimensional preassembly unit in which the plurality of facility openings are properly provided while improving workability, and ensuring easy installation of the three-dimensional preassembly unit in a wall construction position of an erection site in a state in which the plurality of facility openings are properly provided.SOLUTION: A wall reinforcement arrangement method comprises: a three-dimensional pre-assembly unit assembly step in which multiple wall reinforcements 10 are assembled in a grid pattern at a predetermined reinforcement pitch on the wall side of a reinforcement assembly frame 20 temporarily fixed in an installed position at a wall reinforcement installation position Pa of a pre-assembly construction site Sb with multiple facility frames 24 that form a facility opening 1, to pre-assemble a three-dimensional pre-assembly unit U in the installed position; and a pre-assembled three-dimensional unit installation step for releasing the temporary fixing of the reinforcement assembly frame 20 at the wall reinforcement assembly position Pa and installing the three-dimensional pre-assembly unit U at a wall construction position Pb of an erection site Sa after the pre-assembly.SELECTED DRAWING: Figure 11

Description

The present invention relates to a wall reinforcing bar arrangement method for arranging wall reinforcing bars in a reinforced concrete wall in which a plurality of equipment openings are formed.

As a background technology of the present invention, for example, a reinforcing bar assembly frame made of steel is temporarily installed, an internal scaffold is constructed around it, and then vertical reinforcement is placed on the side of the reinforcing bar assembly frame using the internal scaffold. , Next, temporarily place the horizontal reinforcements from below on the horizontal reinforcement receivers provided on the reinforcement assembly frame, and then connect the horizontal reinforcements to the vertical reinforcements with binding wires. There is on-site assembly work for the reinforcing bars to be assembled.

However, in such on-site assembly of reinforcing bars, the reinforcing bars are assembled after a reinforcing bar assembly frame is temporarily installed and an internal scaffold is constructed, which leads to a decrease in work efficiency and a rise in costs.

Therefore, as a technology to solve the above problem, reinforcing bars are assembled horizontally (lying down) into a lattice shape at a reinforcing bar assembly site near the construction site, and the assembled lattice-shaped reinforcing bars are assembled into multiple There is a reinforcing bar work using a reinforcing bar assembly jig that pre-assembles a three-dimensional reinforcing bar unit (three-dimensional pre-assembly unit) in a horizontal state by connecting the reinforcing bar assembly vertically via a reinforcing bar assembly jig (for example, Patent Document 1 reference).

Japanese Patent Application Publication No. 2004-150099

By the way, if the reinforcing bars pre-assembled three-dimensionally as a three-dimensional pre-assembled unit are wall reinforcing bars used in a reinforced concrete wall in which multiple equipment openings are formed, many wall reinforcing bars are separated by multiple equipment openings. This makes it difficult to ensure the rigidity required to form a three-dimensional pre-assembled unit. Therefore, if such wall reinforcing bars are pre-assembled as a three-dimensional pre-assembled unit in a horizontal position as described above, many of the wall reinforcing bars will shift position when the pre-assembled three-dimensional pre-assembled unit is raised from a horizontal position. Therefore, when the three-dimensional pre-assembled unit is installed at the construction site, a plurality of equipment openings are not properly provided in the three-dimensional pre-assembled unit. As a result, in order to prepare multiple equipment openings in the three-dimensional pre-assembled unit in the proper condition, after installing the three-dimensional pre-assembled unit at the construction site, many of the wall reinforcing bars that have been displaced must be returned to their proper positions. Rework will be required.
In other words, improvements can be made in pre-assembling wall reinforcing bars used in reinforced concrete walls with multiple equipment openings into three-dimensional pre-assembled units that are properly equipped with multiple equipment openings, while improving workability. There's room.

In view of this situation, the main problem of the present invention is to improve the workability of wall reinforcing bars used in reinforced concrete walls in which a plurality of equipment openings are formed, while also providing a three-dimensional concrete wall that is properly equipped with a plurality of equipment openings. The object of the present invention is to enable pre-assembly as an assembled unit, and to easily install the three-dimensional pre-assembled unit at a wall construction position at a construction site with a plurality of equipment openings properly provided.

A first characteristic configuration of the present invention is a wall reinforcing bar arrangement method for arranging wall reinforcing bars in a reinforced concrete wall in which a plurality of equipment openings are formed,
A reinforcing bar assembly frame, which is provided with a plurality of equipment frames that form the equipment opening, is temporarily fixed in the installation position at the wall reinforcing bar assembly position of the pre-assembled construction site, and is installed on the wall side of the reinforcing bar assembly frame, which is provided with a plurality of equipment frames forming the equipment opening. a three-dimensional pre-assembled unit assembly step of pre-assembling the three-dimensional pre-assembled unit in an installation posture by assembling the plurality of wall reinforcing bars cut into predetermined lengths in a lattice shape at a predetermined reinforcement pitch;
After the three-dimensional pre-assembled unit is pre-assembled, a lifting machine is used to release the temporary fixing of the reinforcing bar assembly frame at the wall reinforcing bar assembly position, and the three-dimensional pre-assembled unit is installed on the wall at the construction site. The method includes a step of installing a three-dimensional pre-assembled unit at the location.

According to this configuration, by assembling the wall reinforcing bars on the wall side of the reinforcing bar assembly frame equipped with multiple equipment frames and pre-assembling the three-dimensional pre-assembled unit, each wall reinforcing bar can be installed in an appropriate position avoiding equipment openings. Reinforcement can be easily placed in position.
Even if many of the wall reinforcing bars are separated by multiple equipment openings, for example, wall reinforcing bars assembled in a lattice pattern can be connected three-dimensionally via multiple reinforcing bar assembly jigs. Compared to the case where the three-dimensional pre-assembled unit is pre-assembled using the three-dimensional pre-assembled unit, high rigidity can be ensured as the three-dimensional pre-assembled unit. This prevents the displacement of wall reinforcing bars caused by the rocking of the three-dimensional pre-assembled unit during the time when the three-dimensional pre-assembled unit is installed from the pre-assembled construction site to the wall construction position at the construction site using a lifting machine. can be effectively suppressed.
Moreover, by pre-assembling the three-dimensional pre-assembled unit in the installation position, for example, when pre-assembling the three-dimensional pre-assembled unit in the lying position, the pre-assembled three-dimensional pre-assembled unit can be changed from the lying position to the installation position. It is possible to eliminate the trouble of standing up the unit, and also to avoid the displacement of the wall reinforcing bars that is likely to occur when the three-dimensional pre-assembled unit is stood up from a lying position to an installation position.
As a result, wall reinforcing bars used in reinforced concrete walls with multiple equipment openings can be pre-assembled into three-dimensional pre-assembled units that are properly equipped with multiple equipment openings, while improving workability. In addition, the three-dimensional pre-assembled unit can be easily installed at the wall construction position at the construction site with a plurality of equipment openings properly provided.

A second characteristic configuration of the present invention is that the pre-assembly construction site is divided into a pre-assembly yard for pre-assembling the reinforcing bar assembly frame,
Prior to the three-dimensional pre-assembly unit assembly process, a reinforcing bar assembly pedestal pre-assembly step of pre-assembling the reinforcing bar assembly pedestal in a lying position with the equipment frame provided in the pedestal pre-assembly yard;
a step of arranging a reinforcing bar assembly frame, using the lifting machine to raise the previously assembled reinforcing bar assembly frame in a lying position to an installation position, and arranging the raised reinforcing bar assembly frame at the wall reinforcing bar assembly position;
The present invention includes a reinforcing bar assembly frame temporary fixing step of temporarily fixing the reinforcing bar assembly frame disposed at the wall reinforcing bar assembly position to the wall reinforcing bar assembly position.

According to this configuration, by pre-assembling the reinforcing bar assembly frame in the frame pre-assembly yard, the assembly of the reinforcing bar assembly frame and the assembly of the three-dimensional pre-assembled unit can be performed in parallel. Manufacturing can be done rationally and efficiently.
Moreover, in the frame assembly yard, by assembling the reinforcing bar assembly frame in a lying position, there is no need to assemble scaffolding, unlike when assembling a reinforcing bar assembly frame in the installed position, and the work on the scaffold is less efficient. This makes it possible to assemble the reinforcing bar assembly frame rationally and efficiently.
Then, the reinforcing bar assembly frame assembled in the lying position is raised to the installation position using a lifting machine, and then placed at the wall reinforcing bar assembly position and temporarily fixed. It becomes easier to arrange reinforcing bars.
As a result, the three-dimensional pre-assembled unit can be manufactured more effectively and efficiently.

A third characteristic configuration of the present invention is that the vertical bars of the wall reinforcing bars include dual-purpose vertical bars that are also used for attaching a bracing member that supports the reinforcing bar assembly frame in an installed posture,
a dual-purpose vertical reinforcement pre-assembly step of assembling the dual-purpose vertical reinforcement at a predetermined position with respect to the reinforcing bar assembly frame in a lying position in the pedestal pre-assembly yard;
Prior to the step of temporarily fixing the reinforcing bar assembly frame, a step of attaching the bracing member to the dual-purpose longitudinal reinforcement to support the reinforcing bar assembly frame in an installed posture is included.

According to this configuration, when the reinforcing bar assembly frame that has been raised to the installation position is temporarily fixed at the wall reinforcing bar assembly position using the temporary fixing fixture, the dual-purpose longitudinal bars that have been previously assembled on the reinforcing bar assembly frame are attached to By attaching the retaining member, the reinforcing bar assembly frame can be supported in the installed position, and this makes it possible to temporarily fix the reinforcing bar assembly frame at the wall reinforcing bar assembly position of the reinforcing bar assembly frame using a lifting machine. The lifting machine can be used for the above-mentioned three-dimensional pre-assembled unit installation process.
In addition, by attaching the brace members to the dual-purpose vertical reinforcement, there is no need to assemble special steel materials for attaching the brace members to the reinforcing bar assembly frame, thereby reducing the number of steel materials used and the number of assembly steps. I can do it.
As a result, the three-dimensional pre-assembled unit can be manufactured more effectively and efficiently while reducing the cost of steel materials.

A fourth characteristic configuration of the present invention is that the three-dimensional pre-assembled unit assembling step includes a plurality of vertical reinforcement through-holes through which the vertical reinforcements of the wall reinforcing bars are passed, and the longitudinal reinforcement conveyance is formed at a reinforcement pitch of the vertical reinforcements. It includes a vertical reinforcement work of arranging the vertical reinforcement on the wall side of the reinforcing bar assembly frame using a jig,
In the vertical reinforcement work, a mechanical fixing section is removably attached to one end of the vertical bars, and a predetermined number of the vertical bars are arranged so that the mechanical fixing section is received by the vertical bar conveying jig. After passing the vertical reinforcement through the vertical reinforcement hole, the lifting machine is used to lift a predetermined number of the vertical reinforcement together with the vertical reinforcement transport jig, and the lifted vertical reinforcement is placed on the wall surface of the reinforcement assembly frame. The mechanical fixing part is arranged at a predetermined position on the side, and the mechanical fixing part is removed from one end of the arranged longitudinal bar, and the mechanical fixing part is recovered together with the longitudinal bar conveying jig.

According to this configuration, in the vertical reinforcement work, by using the vertical reinforcement transport jig, multiple vertical reinforcements can be vertically moved to the wall side of the reinforcing bar assembly frame in one lifting process using a lifting machine. Reinforcement can be easily arranged at the reinforcement pitch.
The vertical reinforcement conveying jig and the plurality of mechanical fixing units used in this vertical reinforcement work can be rationally reused in subsequent vertical reinforcement work.
As a result, the three-dimensional pre-assembled unit can be manufactured more effectively and efficiently while further reducing the cost of steel materials.

A fifth characteristic configuration of the present invention is that the wall surface side of the reinforcing bar assembly frame is provided with a plurality of horizontal bar receiving metal fittings that receive and support the horizontal bars of the wall reinforcing bars at a reinforcement pitch of the horizontal bars,
The three-dimensional pre-assembled unit assembly step includes a horizontal reinforcement work in which the horizontal reinforcement is received by the horizontal reinforcement receiving metal fittings in order from the bottom using the lifting machine, and the reinforcement is arranged on the wall side of the reinforcing bar assembly frame. The point is that it is included.

According to this configuration, by lifting each horizontal reinforcement using a lifting machine and receiving and supporting it on the horizontal reinforcement receiving bracket, it is possible to hold the horizontal reinforcement on the wall side of the reinforcing bar assembly frame at the reinforcement pitch of the horizontal reinforcement. Assembling each horizontal reinforcement to the wall side of the assembly frame can be easily performed without using a lifting machine, and the lifting machine can be used for the above-mentioned three-dimensional pre-assembly unit installation process, vertical reinforcement work, etc. can.
As a result, the three-dimensional pre-assembled unit can be manufactured more effectively and efficiently.

A sixth characteristic configuration of the present invention is that a lower frame supporting the three-dimensional pre-assembled unit is installed at the wall construction position,
The present invention includes a three-dimensional pre-assembled unit installation step of joining the lower part of the three-dimensional pre-assembled unit installed at the wall construction position to the lower frame and install the three-dimensional pre-assembled unit at the wall construction position.

According to this configuration, the lower part of the three-dimensional front assembly unit, which is installed in the installation position at the wall construction position at the construction site using a lifting machine, is connected to the lower frame installed at the wall construction position. The assembly unit can be easily installed in a wall construction position.
As a result, the three-dimensional pre-assembled unit can be efficiently installed at the wall construction position.

Flowchart showing the construction procedure using the wall reinforcing bar arrangement method A front view of the horizontal reinforcement support frame, etc., showing the horizontal reinforcement support frame installation process and the reinforcing bar assembly frame pre-assembly process. A plan view of the reinforcing bar assembly frame showing the horizontal bar support frame installation process and the reinforcing bar assembly frame pre-assembly process. A side view of a reinforcing bar assembly frame showing a dual-purpose vertical bar pre-assembly process and a reinforcing bar assembly frame arrangement process A side view of the reinforcing bar assembly frame showing the work of pulling up the reinforcing bar assembly frame in the reinforcing bar assembly frame placement process. Side view of the reinforcing bar assembly frame showing the reinforcing bar assembly frame arrangement work in the reinforcing bar assembly frame placement process Side view of the reinforcing bar assembly frame showing the retaining member attachment process and the reinforcing bar assembly frame temporary fixing process Side view of the reinforcing bar assembly frame showing the vertical reinforcement work in the three-dimensional pre-assembled unit assembly process Front view of the reinforcing bar assembly frame showing the state in the middle of vertical reinforcement work in the three-dimensional pre-assembled unit assembly process Front view of the reinforcing bar assembly frame showing the completed state of vertical reinforcement work in the three-dimensional pre-assembled unit assembly process Front view of the reinforcing bar assembly frame showing horizontal reinforcement work in the three-dimensional pre-assembled unit assembly process Side view of the reinforcing bar assembly frame showing the three-dimensional pre-assembled unit assembly process and the three-dimensional pre-assembled unit installation process Side view of a three-dimensional pre-assembled unit, etc. showing a three-dimensional pre-assembled unit installation process and a three-dimensional pre-assembled unit installation process Front view of a three-dimensional pre-assembled unit, etc. showing a three-dimensional pre-assembled unit installation process and a three-dimensional pre-assembled unit installation process

Hereinafter, as an example of a mode for carrying out the present invention, the wall reinforcing bar arrangement method according to the present invention will be described. An embodiment applied to the case of arranging wall reinforcing bars for a reinforced concrete inner wall where it is necessary to form many equipment openings among thick reinforced concrete walls (for example, a reinforced concrete wall with a wall thickness of 1 m or more) will be explained based on drawings. do.
Note that the wall reinforcing bar arrangement method according to the present invention can be applied to the case of arranging wall reinforcing bars in a reinforced concrete wall where a plurality of equipment openings are formed, regardless of wall thickness or internal and external walls. I can do it.

To explain the wall reinforcing bars of the reinforced concrete internal wall to which the wall reinforcing bar arrangement method according to the present invention is applied, as shown in FIGS. 11 and 14, the wall reinforcing bars 10 of the reinforced concrete internal wall exemplified in this embodiment are It consists of a plurality of vertical bars 11 and horizontal bars 12 cut into predetermined lengths according to the arrangement of a plurality of equipment openings 1 formed in the wall, and is secured around the construction site Sa (see Figs. 13 and 14). At the pre-assembled construction site Sb (see Figs. 2 to 12), each wall surface side of the reinforcing bar assembly frame 20 temporarily fixed to the wall reinforcing bar assembly position Pa (see Figs. 6 to 12) of the pre-assembled construction site Sb By arranging reinforcement in a lattice shape at a predetermined reinforcement pitch, it is pre-assembled three-dimensionally as a three-dimensional pre-assembled unit U (see FIGS. 11 to 14).

Threaded reinforcing bars are used for the vertical bars 11 and horizontal bars 12 of the wall reinforcing bars 10, which can be connected by mechanical joints 2 (see Figs. 13 to 14) and which can be attached and detached by mechanical fixing parts 3 (see Figs. 8 to 9). ing. The plurality of vertical reinforcements 11 include a predetermined number of dual-purpose vertical reinforcements 11A that are also used for attaching a brace member 4 (see FIGS. 7 to 11) made of a single tube that supports the reinforcing bar assembly frame 20 in an installed posture. .

To explain the configuration of the reinforcing bar assembly frame 20, as shown in FIGS. 2 to 5, the reinforcing bar assembly frame 20 is installed at a manufacturing factory or at a pre-assembly construction site Sb in a pre-assembly yard Y divided into a pre-assembly construction site Sb. A plurality of horizontal reinforcement support frames 21 manufactured in a divided production yard (not shown), a plurality of vertical reinforcement support members 22 and 23 made of L-shaped steel or channel steel, and a plurality of horizontal reinforcement support frames 21 that form the equipment opening 1 The equipment frame 24 (see FIGS. 3, 9 to 11, and 14) and the like are placed at predetermined positions and welded together to form a three-dimensional shape having an internal space 25. Each wall side of the reinforcing bar assembly frame 20 is provided with a plurality of horizontal bar receiving fittings 26 that receive and support the horizontal bars 12 at the reinforcement pitch of the horizontal bars 12. Each horizontal reinforcement support metal fitting 26 is made of a reinforcing bar bent in an L-shape, and the bent side that receives and supports the horizontal reinforcement 12 protrudes outward from each horizontal reinforcement support frame 21 toward the wall side. are welded together.

To explain the structure of the horizontal reinforcement support frame 21, as shown in FIGS. 2 to 14, each horizontal reinforcement support frame 21 is made of L-beams arranged at predetermined intervals set according to the wall thickness of the reinforced concrete internal wall. A pair of horizontal reinforcement support members 21A and a plurality of connection members 21B made of L-shaped steel that connect them across the pair of horizontal reinforcement support members 21A are welded together to form a ladder shape. A predetermined number of horizontal reinforcement fittings 26 are welded and joined to each horizontal reinforcement support member 21A at the reinforcement pitch of the horizontal reinforcement 12. The upper end of each horizontal reinforcement support member 21A has a through hole for slinging to a lifting machine (not shown) such as a tower crane via a wire rope 5 (see FIGS. 4 to 6 and 12 to 13). 21A is provided.

To explain the structure of the equipment frame 24, as shown in FIG. 3, FIGS. 9 to 11, and FIG. As a result, it is formed into a rectangular shape with a size depending on the installation position. A plurality of arm members 24A extending from the equipment frame 24 and joined to the horizontal reinforcement support frame 21 or the vertical reinforcement support members 22 and 23 are welded to each equipment frame 24.

As shown in FIGS. 6 to 12, a temporary fixing frame 30 is constructed at the wall reinforcing bar assembly position Pa of the pre-assembly construction site Sb to enable temporary fixing of the reinforcing bar assembly frame 20 at the wall reinforcing bar assembly position Pa. It's included. The temporary fixing frames 30 are H-shaped and are arranged in a line at predetermined intervals so as to be located in the internal space 25 of the reinforcing bar assembly frame 20 when the reinforcing bar assembly frame 20 is temporarily fixed at the wall reinforcing bar assembly position Pa. A plurality of support members 31 made of steel, a pair of lower construction members 32 made of L-beams installed in two rows at the lower ends of the support members 31 arranged in a row, and a temporary structure such as a clamping fitting. A plurality of upper construction members 33 made of channel steel are provided, which are removably installed between the upper portions of the respective pillar members 31 using fasteners (not shown). The lower construction member 32 is welded to the lower end of each column member 31 so as to receive and support each connecting member 21B located at the lower end of the reinforcing bar assembly frame 20 placed at the wall reinforcing bar assembly position Pa. There is. Each upper construction member 33 is connected to each connecting member located at the upper end of the reinforcing bar assembly frame 20 so as to be located between the upper parts of each column member 31 with respect to the reinforcing bar assembly frame 20 arranged at the wall reinforcing bar assembly position Pa. 21B, their both ends are temporarily fixed to the upper part of each column member 31 using a temporary fixing fixture, so that they are installed between the upper parts of each column member 31, and this construction The upper end portion of the reinforcing bar assembly frame 20 is temporarily fixed to the upper construction member 33 in this state using a temporary fixing device.
Note that the configuration of the temporary fixing frame 30 and the type of shaped steel used for the temporary fixing frame 30 can be changed in various ways. A pair of L-beams adjacent to each strut member 31 and spanning a plurality of strut members 31 may be used.

As shown in FIGS. 11 to 14, the three-dimensional pre-assembled unit U is pre-assembled at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb, and then lifted by a lifting machine to the wall of the construction site Sa. It is installed at construction position Pb. At the wall construction position Pb of the construction site Sa, a lower pedestal 40 that supports the three-dimensional pre-assembled unit U is installed, and after the three-dimensional pre-assembled unit U is installed at the wall construction position Pb, the three-dimensional pre-assembled unit The lower part of U is welded and joined to the lower frame 40, so that it is installed at the wall construction position Pb. At this time, as shown in FIG. 14, if the current three-dimensional pre-assembled unit U is installed adjacent to the three-dimensional pre-assembled unit U that was previously installed at the wall construction position Pb, each horizontal strip of the three-dimensional pre-assembled unit U is 12 are connected to each horizontal reinforcement 12 of an adjacent three-dimensional pre-assembled unit U via a mechanical joint 2. After the series of three-dimensional pre-assembled units U are installed at the wall construction position Pb in this way, the series of three-dimensional pre-assembled units U and the lower frame 40 form a pouring area for wall concrete (not shown). The wall is surrounded by formwork (not shown) and pour lath (not shown), etc., and wall concrete is poured within the pouring area, so that the wall is placed at the wall construction position Pb at the construction site Sa. A reinforced concrete internal wall is constructed, which includes therein a three-dimensional pre-assembled unit U consisting of reinforcing bars 10 and a reinforcing bar assembly frame 20, and a lower frame 40.

To explain the structure of the lower frame 40, as shown in FIGS. 13 and 14, the lower frame 40 includes a plurality of ladder-shaped supports 41 arranged in a line at predetermined intervals at the wall construction position Pb of the construction site Sa. A pair of lower connecting members 42 made of L-shaped steel connect the lower ends of the plurality of columns 41 arranged in a row in two rows, and a pair of lower connecting members 42 are installed in two rows at the upper ends of the plurality of columns 41 arranged in a row. A pair of upper end construction members 43 made of channel steel, a plurality of brace members 44 constructed on adjacent columns 41, etc. are bolted together to have high rigidity. Each support 41 includes a pair of support members 41A made of L-shaped steel arranged at a predetermined interval set according to the wall thickness of the reinforced concrete internal wall, and an L-shaped steel that connects them across the pair of support members 41A. The upper and lower connecting members 41B are welded together to form a ladder shape. The lower frame 40 is installed at the wall construction position Pb of the construction site Sa by fixing the lower end of each support member 41A with a construction anchor (not shown).
Note that the configuration of the lower frame 40 and the type of shaped steel used for the lower frame 40 can be changed in various ways. For example, channel steel may be used as the column member 41A of each column 41, and each upper end construction member 43 may be made of channel steel. Alternatively, L-beam steel may be used.

To explain the wall reinforcing bar arrangement method according to the present invention, as shown in FIG. ), the reinforcing bar assembly frame pre-assembly process as the second process S2 (see Figures 2 to 3), the combined longitudinal bar pre-assembly process as the third process S3 (see Figure 4), and the fourth process S4 Reinforcing bar assembly frame placement process (see Figures 4 to 7), retainer member attachment process as the fifth process S5 (see Figure 7), and reinforcing bar assembly frame temporary fixing process as the sixth process S6 (see Figures 7 to 8) The three-dimensional pre-assembled unit assembly process as the seventh process S7 (see FIGS. 8 to 12), the three-dimensional pre-assembled unit installation process as the eighth process S8 (see FIGS. 12 to 14), and the ninth process S9 This includes a three-dimensional pre-assembly unit installation process (see FIGS. 13 and 14).

In the horizontal reinforcement support frame installation step of the first step S1, as shown in FIGS. The horizontal reinforcement support frame 21, which has been lifted into the gantry pre-assembly yard Y, is installed in the gantry pre-assembly yard Y in a sideways posture with a pair of transverse reinforcement support members 21A arranged vertically.

Therefore, the frame pre-assembly yard Y is equipped with a plurality of support frames 8 and 9 that support each of the plurality of horizontal reinforcement support frames 21 used in the reinforcing bar assembly frame 20 in the above-mentioned sideways posture. Among the plurality of support frames 8 and 9, the lower end support frame 8 that supports the lower end of the horizontal reinforcement support frame 21 has a hinge plate 8A fixed to the gantry 50 in the yard Y where the frame is assembled, and a hinge plate 8A. A strut member 8C is connected to the strut member 8C via a connecting pin 8B so as to be able to swing up and down, and the lower end portion of a horizontal reinforcement support frame 21 extending perpendicularly from both ends of the strut member 8C is temporarily fixed with a temporary fixing fixture. A pair of support arms 8D are provided. The support frame 9 that supports the parts other than the lower end of the horizontal reinforcement support frame 21 includes a base member 9A that is H-shaped in plan view and supported by the gantry 50 of the yard Y before the frame is assembled, and a pair of strut members that extend upward from the base member 9A. 9B, and a support member 9C that receives and supports the horizontal reinforcement receiving fitting 26 of the horizontal reinforcement support frame 21 between the pair of support members 9B.

Then, in the horizontal reinforcement support frame installation process, the horizontal reinforcement support frame 21, which has been lifted in the installed position to the pre-assembly yard Y by a lifting machine, is moved to the support frame 8 for the lower end with the strut member 9B switched to the lodging position. The work of arranging the horizontal reinforcement support frame placed above (see the broken line arrow in Fig. 5) and the horizontal reinforcement support frame 21 placed on the support pedestal 8 for the lower end using a lifting machine while maintaining that state. 21 is temporarily fixed to each support arm 8D of the support pedestal 8 using a temporary fixing tool, and the horizontal bar support frame 21 whose lower end is temporarily fixed to each support arm 8D is Using a lifting machine, use the connecting pin 8B of the support pedestal 8 as a fulcrum to switch from the installed position to the sideways position, and move the horizontal bar receiving metal fittings 26 at predetermined positions on the horizontal bar support frame 21 to the support pedestals 9 other than those for the lower end. A horizontal reinforcement support frame installation work in which the horizontal reinforcement support frame 21 is received and supported by the support member 9C and installed in a horizontal position at a predetermined position in the pre-assembly yard Y (see broken line arrows in FIGS. 4 and 5, and FIGS. 2 and 3). It is included.

That is, in the horizontal reinforcement support frame installation process, by sequentially performing the above operations on the plurality of horizontal reinforcement support frames 21 used in the reinforcement assembly frame 20, the plurality of horizontal reinforcement support frames 21 used in the reinforcement assembly frame 20 are In the above-mentioned horizontal position, the frames can be installed in the pre-assembly yard Y in a parallel arrangement at a predetermined interval according to the reinforcing bar assembly frames 20 to be pre-assembled (see FIG. 3).

In the reinforcing bar assembly frame pre-assembly process of the second process S2, as shown in FIGS. Using the support frame 21, a reinforcing bar assembly frame 20 in a lying position with a plurality of equipment frames 24 is pre-assembled in a pre-assembly yard Y.

Therefore, in the reinforcing bar assembly frame pre-assembly process, a plurality of vertical bar support members 22, 23 used for the reinforcing bar assembly frame 20 are attached to a plurality of horizontal bar support frames 21 arranged in parallel at predetermined intervals in a horizontal position. are placed at predetermined positions on both the upper and lower end sides (each wall surface side) of the plurality of transverse reinforcement support frames 21 in a horizontal position orthogonal to each transverse reinforcement support frame 21 so as to cover a predetermined number of transverse reinforcement support members 21A. A frame forming operation in which the frame of the reinforcing bar assembly frame 20 is formed by bolting to the transverse reinforcement support member 21A, and a plurality of equipment frames 24 provided on each wall side of the reinforcing bar assembly frame 20 are carried out at both upper and lower ends of each transverse reinforcement support frame 21. While placing the arm member 24A of the equipment frame 24 in a predetermined position and posture with respect to the plurality of horizontal reinforcement support members 21A and vertical reinforcement support members 22 and 23 provided on the side (each wall surface side), the arm member 24A of the equipment frame 24 is attached to the horizontal reinforcement support member 21A or The work includes assembling the equipment frame to bolt the reinforcement support members 22 and 23.

In other words, in the reinforcing bar assembly frame pre-assembly process, by performing the above operations, the reinforcing bar assembly frame 20, which is in a lying position with a plurality of equipment frames 24 provided at predetermined positions on each wall side, is Pre-assembly can be carried out in the assembling yard Y in a state with high rigidity.

In the third step S3, which is a dual-purpose vertical reinforcement pre-assembly step, as shown in FIG. The vertical reinforcement 11A is assembled at a predetermined position on the previously assembled reinforcing bar assembly frame 20 in a lying position.

Specifically, after arranging a predetermined number of dual-purpose vertical bars 11A at predetermined positions of the vertical bar support members 22 and 23 on the reinforcing bar assembly frame 20 in a lying position, using U bolts (not shown) or the like, Assemble.

In the fourth step S4, the reinforcing bar assembly pedestal arrangement step, as shown in FIGS. The assembly frame 20 is lifted from the pre-assembly yard Y and placed at the wall reinforcing bar assembly position Pa at the pre-assembly construction site Sb.

Therefore, in the reinforcing bar assembly frame placement process, a lifting machine is used to raise the reinforcing bar assembly frame 20 in the lying position to the installation position using the connecting pins 8B of each support frame 8 as fulcrums. (Refer to the practical arrows in Figures 4 and 5) and while maintaining the raised reinforcing bar assembly frame 20 in the installation position using a lifting machine, the temporary fixing work performed in the horizontal reinforcement support frame temporary fixing work in the previous horizontal reinforcement support frame installation process was performed. A work to release the temporary fixing of the horizontal bar support frame 21 between the lower end of the horizontal bar support frame 21 and each support arm 8D of the support pedestal 8 using a fastening fixture, and a reinforcing bar assembly pedestal in the installation position with the temporary fixation released. 20 using a lifting machine from the pre-assembled yard Y of the pre-assembled construction site Sb toward the wall reinforcing bar assembly position Pa, and each of the temporary frames 30 erected at the wall reinforcing bar assembling position Pa. Each connecting member (hereinafter referred to as a lower end connecting member) 21B at the lower end of the reinforcing bar assembly frame 20 connects each lower end of the temporary frame 30 so that the column member 31 is located in the internal space 25 of the reinforcing bar assembly frame 20. The reinforcing bar assembly frame is placed at the wall reinforcing bar assembly position Pa so as to be received and supported by the construction member 32 (see FIGS. 6 and 7), and each lower end of the reinforcing bar assembly frame 20 is placed using temporary fixing fixtures. This includes a work of temporarily fixing the lower part of the gantry to temporarily fix the connecting member 21B to each lower construction member 32 of the temporary fixing frame 30.

In other words, in the reinforcing bar assembly frame placement process, by performing the above operations, the reinforcing bar assembly frame 2, which was preassembled in the lying position in the preassembled yard Y of the preassembled construction site Sb, is changed to the installation position. It is possible to appropriately arrange the wall reinforcing bars at the pre-assembly construction site Sb at the wall reinforcing bar assembly position Pa.

In the retaining member attachment step of the fifth step S5, as shown in FIG. The reinforcing bar assembly frame 20 placed at the assembly position Pa is supported in the installation posture.

Therefore, as shown in FIGS. 7 to 12, the gantry 52 of the pre-assembly construction site Sb is placed at a predetermined distance from each dual-purpose vertical reinforcement 11A of the reinforcing bar assembly pedestal 20 placed at the wall reinforcing bar assembly position Pa. A plurality of single tube fixing members 53 made of L-shaped steel are fixed. One end of a single pipe 54 extending between these single pipe fixing members 53 and the lower construction member 32 of the temporary fixing frame 30 is fixed to each single pipe fixing member 53 via a single pipe fixing device 55 such as a catch clamp. has been done. The other end of each single through tube 54 is fixed to a location adjacent to each double-duty vertical reinforcement 11A in the lower construction member 32 via a single tube fixture 55.

As a result, in the retaining member installation process, one end of each retaining member 4 is passed through and attached to one end of the single pipe 54 via the single pipe clamp 56, and an aerial work vehicle (not shown) is used. By attaching the other end of each restraint member 4 to the upper part of the dual-purpose vertical reinforcement 11A via the single pipe clamp 56, each restraint member 4 is passed through and spanned between one end of the single pipe 54 and the upper part of the dual-purpose vertical reinforcement 11A. The reinforcing bar assembly frame 20 placed in the installation attitude at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb can be maintained in that attitude by the plurality of retaining members 4 stretched over in this way, It is possible to release the suspended support of the reinforcing bar assembly frame 20 in the installed posture by the lifting machine.

In the reinforcing bar assembly pedestal temporary fixing step of the sixth step S6, as shown in FIGS. Temporarily fix it at the assembly position Pa.

Therefore, in the reinforcing bar assembly frame temporary fixing process, a lifting machine and an aerial work vehicle are used to connect each upper construction member 33 of the temporary fixing frame 30 to each connecting member (hereinafter referred to as the upper end) of the upper end of the reinforcing bar assembly frame 20. Upper construction member temporary fixing work of temporarily fixing both ends of each upper construction member 33 to the upper part of each column member 31 using a temporary fixing tool, and reinforcing bar assembly frame 20 This includes a work for temporarily fixing the upper end of the gantry to temporarily fixing each upper end connecting member 21B to each upper construction member 33 using a temporary fixing tool.

In other words, in the reinforcing bar assembly frame temporary fixing process, by performing the above operations, both the upper and lower parts of the reinforcing bar assembly frame 20 placed in the installation posture at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb can be fixed to the wall reinforcing bar assembly. It can be temporarily fixed to the temporary fixing frame 30 installed at the mounting position Pa using a temporary fixing fixture, thereby temporarily fixing the reinforcing bar assembly frame 20 in the installation posture to the wall reinforcing bar assembly position Pa with good stability. be able to.

In the seventh step S7, the three-dimensional pre-assembled unit assembly process, as shown in FIGS. A plurality of wall reinforcing bars 10 cut to a predetermined length according to the arrangement of the equipment opening 1 are gridded at a predetermined reinforcement pitch on each wall side of the reinforcing bar assembly frame 20 which is temporarily fixed in the installation position Pa at the installation position. The three-dimensional pre-assembled unit U in the installed position is pre-assembled.

Therefore, in the three-dimensional pre-assembled unit assembly process, a vertical bar conveying jig 60 (FIGS. 8 to 9 ) and a lifting machine to arrange a predetermined number of vertical bars 11 on each wall side of the reinforcing bar assembly frame 20, and using a lifting machine and an aerial work vehicle, This includes a horizontal reinforcement work in which a predetermined number of horizontal reinforcements 12 are sequentially received by the horizontal reinforcement receiving fittings 26 from the bottom and arranged on each wall surface side of the reinforcing bar assembly frame 20.

Specifically, as shown in FIGS. 8 to 10, in the vertical reinforcement work, first, the mechanical fixing section 3 is removably attached to one end of each vertical reinforcement 11, and the mechanical fixing section 3 is After passing a predetermined number (six in FIGS. 8 and 9) of vertical bars 11 through the vertical bar through hole 60a so that they can be received by the vertical bar transport jig 60, each vertical bar 11 is Each vertical reinforcement 11 is lifted by a lifting machine and placed at a predetermined position on the wall side of the reinforcing bar assembly frame 20, and each vertical reinforcement 11 is fixed to each vertical reinforcement support member 22, 23 with a U bolt to form a reinforcing bar. Reinforcements are arranged on each wall surface side of the assembly frame 20 at a predetermined reinforcement pitch. Next, the mechanical fixing section 3 is removed from one end of the arranged vertical reinforcement 11, and the mechanical fixing section 3 is recovered together with the vertical reinforcement conveying jig 60. Then, such operations are repeated until each vertical reinforcement 11 is disposed at a predetermined position on each wall surface side of the reinforcing bar assembly frame 20.

After that, as shown in FIGS. 11 and 12, in the horizontal reinforcement work, a lifting machine and an aerial work vehicle are used to receive a predetermined number of horizontal reinforcements 12 in the horizontal reinforcement receiving bracket 26 in order from the bottom. , a predetermined number of horizontal reinforcements 12 are arranged at a predetermined reinforcement pitch on each wall surface side of the reinforcing bar assembly frame 20 by fixing with wires (not shown). Then, such operations are repeated until each horizontal reinforcement 12 is disposed at a predetermined position on each wall surface side of the reinforcing bar assembly frame 20.

That is, in the three-dimensional pre-assembled unit assembly process, by performing the above operations, the reinforcing bar assembly frame 20 temporarily fixed in the installation posture at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb is placed on both wall sides. A plurality of wall reinforcing bars 10 cut to a predetermined length according to the arrangement of the equipment opening 1 can be assembled in a lattice shape at a predetermined reinforcement pitch, and the three-dimensional pre-assembly in the installation posture can be performed at the wall reinforcing bar assembly position Pa. Unit U can be assembled first.

In the eighth step S8, the three-dimensional pre-assembled unit installation process, as shown in FIGS. 12 to 14, after pre-assembling the three-dimensional pre-assembled unit U in the installation posture at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb, Using a lifting machine and an aerial work vehicle, the temporary fixation of the reinforcing bar assembly frame 20 at the wall reinforcing bar assembly position Pa is released, and the three-dimensional pre-assembly unit U is moved to the wall construction position Pb at the construction site Sa. Install.

Therefore, in the installation process of the three-dimensional pre-assembled unit, an aerial work vehicle is used to temporarily fix each upper end connecting member 21B of the reinforcing bar assembly frame 20 to each upper construction member 33 of the temporary fixing frame 30 using a temporary fixing fixture. After releasing the temporary fixing on the top of the pedestal frame 30 and releasing the temporary fixing of each upper construction member 33 to each support member 31 in the temporary frame 30 by the temporary fixing device, a lifting machine is used to assemble the reinforcing bars on the pedestal 20. The upper construction member removal work involves removing each of the upper construction members 33 (see Fig. 12), and the single pipe clamp 56 is removed using an aerial work vehicle while maintaining the three-dimensional pre-assembled unit U in the installed position using a lifting machine. Release the attachment of each brace member 4 to the dual-purpose longitudinal reinforcement 11A via the single pipe clamp 56, and release the attachment of each brace member 4 to the through single pipe 54 via the single pipe clamp 56, and remove each brace member 4. (see FIG. 12), and temporary fixing of the lower end of each lower end connecting member 21B of the reinforcing bar assembly frame 20 to each lower construction member 32 of the temporary frame 30 by the temporary fixing tool. The fixation release work and the three-dimensional pre-assembled unit U whose temporary fixation of the reinforcing bar assembly frame 20 by the retainer member 4 and the temporary fixing device have been released by these operations are lifted by a lifting machine and transported to the construction site Sa. This includes the work of installing three-dimensional pre-assembled units on each upper end construction member 43 of the lower frame 40 installed at the wall construction position Pb (see FIGS. 13 and 14).

That is, in the three-dimensional pre-assembled unit installation process, by performing the above operations, the three-dimensional pre-assembled unit U, which has been pre-assembled in the installation posture at the wall reinforcing bar assembly position Pa of the pre-assembled construction site Sb, can be attached to the wall reinforcing bar assembly. After releasing the temporary fixation at the position Pa, it can be installed in the installation posture on the lower frame 40 installed at the wall construction position Pb at the construction site Sa.

In the ninth process S9, the three-dimensional pre-assembled unit installation process, as shown in FIGS. 13 to 14, the lower part of the three-dimensional pre-assembled unit U installed at the wall construction position Pb of the construction site Sa is installed at the wall construction position Pb. The three-dimensional pre-assembled unit U is installed at the wall construction position Pb by joining it to the lower pedestal 40.

Therefore, in the installation process of the three-dimensional pre-assembled unit, the lower end of the unit temporarily fixes each lower end connecting member 21B of the three-dimensional pre-assembled unit U to each upper end construction member 43 of the lower frame 40 using a temporary fixing fixture. and a retaining member installation work in which the above-mentioned retainer members 4 are attached to the respective vertical bars 11A of the three-dimensional pre-assembled unit U, and the three-dimensional pre-assembled unit U installed on the lower pedestal 40 is supported in the installation posture (FIG. 13). ) and each lower end connecting member 21B of the three-dimensional pre-assembled unit U is welded to each upper end construction member 43 of the lower frame 40, and the three-dimensional pre-assembled unit U is installed at the wall construction position Pb of the construction site Sa. Installation work of the three-dimensional front assembly unit, and retainer member removal work of removing the retainer members 4 from each dual-purpose vertical reinforcement 11A of the three-dimensional front assembly unit U to release the support of the three-dimensional front assembly unit U by each retainer member 4 (see FIG. 14) ), and a gantry lower temporary fixing release operation for releasing the temporary fixing of the three-dimensional pre-assembled unit U to the lower pedestal 40 by the temporary fixing tool.

In order to enable the above-mentioned retaining member installation work and retaining member removal work, as shown in FIG. A plurality of single tube fixing members 57 made of single clips are fixed at positions spaced apart from each dual-purpose vertical reinforcement 11A of the three-dimensional pre-assembled unit U at a predetermined distance. One end portion of a single tube 58 extending between the single tube fixing members 57 and the lower frame 40 is fixed to each single tube fixing member 57 via a single tube fixing device 59 such as a catch clamp. The other end of each single through tube 58 is fixed to a location adjacent to each double-duty vertical reinforcement 11A in the lower connecting member 42 via a single tube fixture (not shown).

As a result, in the above-mentioned bracing member installation work, one end of each bracing member 4 is passed through and attached to one end of the single pipe 54 via the single pipe clamp 56, and the other end of each bracing member 4 is By attaching a single pipe clamp (not shown) to the upper part of the dual-purpose vertical reinforcement 11A using a work vehicle or the like, one end of the single pipe 58 and the upper part of the dual-purpose vertical reinforcement 11A are connected through each retaining member 4. The plurality of retaining members 4 stretched in this way can support the three-dimensional pre-assembled unit U installed in the installation posture on the lower frame 40 in that posture, and Suspension support in the installed posture of the pre-assembled unit U can be released.

In addition, in the work of removing the retaining members, use an aerial work vehicle to release the attachment of each retaining member 4 to the dual-purpose longitudinal reinforcement 11A via the single pipe clamp 56, and to remove each retainer member 4 via the single pipe clamp 56. By releasing the attachment of the retainer members 4 to the single through pipe 58, each retainer member 4 can be removed from the dual-purpose longitudinal reinforcement 11A and the single through pipe 58, and the support of the three-dimensional pre-assembled unit U by each retainer member 4 can be removed. Can be canceled.

That is, in the three-dimensional pre-assembled unit installation process, by performing the above operations, the lower part of the three-dimensional pre-assembled unit U, which was installed in the installation posture at the wall construction position Pb at the construction site Sa, can be installed at the wall construction position Pb. It can be welded and joined to the lower frame 40, and the three-dimensional pre-assembled unit U in the installed position can be reliably installed at the wall construction position Pb.

13 to 14 show each vertical strip 11 of the lower floor three-dimensional pre-assembled unit U extending upwardly through the slab 51 at the wall construction position Pb. When each vertical reinforcement 11 of the three-dimensional pre-assembled unit U extends upward from the slab 51, each of these vertical reinforcements 11 is located at the wall construction position Pb in the three-dimensional pre-assembled unit installation process shown in FIGS. It is connected via mechanical joints 2 to each vertical reinforcement 11 of the three-dimensional pre-assembled unit U installed in the.

In short, according to the wall reinforcing bar arrangement method exemplified in this embodiment, the wall reinforcing bars 10 are assembled on each wall side of the reinforcing bar assembly frame 20 provided with a plurality of equipment frames 24, and the three-dimensional pre-assembled unit U is pre-assembled. By doing so, each wall reinforcing bar 10 can be easily arranged at an appropriate position avoiding the equipment opening 1.

Even if most of the wall reinforcing bars 10 are arranged in a state where they are separated by a plurality of equipment openings 1, for example, the wall reinforcing bars 10 assembled in a lattice shape can be assembled into a three-dimensional structure using a plurality of reinforcing bar assembly jigs. Compared to the case where the three-dimensional pre-assembled unit U is pre-assembled by connecting to the three-dimensional pre-assembled unit U, high rigidity can be ensured as the three-dimensional pre-assembled unit U. As a result, the wall caused by the swinging of the three-dimensional pre-assembled unit U during the time when the three-dimensional pre-assembled unit U is installed from the pre-assembled construction site Sb to the wall construction position Pb of the construction site Sa using a lifting machine. Displacement of the reinforcing bars 10 can be effectively suppressed.

Moreover, by pre-assembling the three-dimensional pre-assembled unit U in the installed position, for example, when pre-assembling the three-dimensional pre-assembled unit U in the lying position, the pre-assembled three-dimensional pre-assembled unit U can be moved from the lying position. It is possible to eliminate the trouble of raising the three-dimensional pre-assembled unit U from a lying position to the installation position, and to avoid displacement of the wall reinforcing bars 10 that is likely to occur when raising the three-dimensional pre-assembled unit U from a lying position to the installation position.

Furthermore, by pre-assembling the reinforcing bar assembly frame 20 in the frame pre-assembly yard Y, the assembly of the reinforcing bar assembly frame 20 and the assembly of the three-dimensional pre-assembly unit U can be performed in parallel. The U can be manufactured rationally and efficiently.

Furthermore, in the frame assembly yard Y, by assembling the reinforcing bar assembly frame 20 in the lying position, there is no need to assemble scaffolding, unlike when assembling the reinforcing bar assembly frame 20 in the installed position, and the scaffolding is inefficient. As a result, the reinforcing bar assembly frame 20 can be assembled rationally and efficiently.

Then, the reinforcing bar assembly frame 20 assembled in the lying position is raised to the installation position using a lifting machine, and then placed at the installation position of the wall reinforcing bars 10 and temporarily fixed with a temporary fixing fixture. It becomes easier to arrange the wall reinforcing bars 10 on the reinforcing bar assembly frame 20 in the posture.

In addition, when temporarily fixing the reinforcing bar assembly frame 20 that has been raised to the installation position to the wall reinforcing bar 10 assembly position using a temporary fixing fixture, the dual-purpose vertical bars that have been previously assembled on the reinforcing bar assembly frame 20 at the pre-assembly yard Y are used. By attaching the retainer member 4 to 11A, etc., the reinforcing bar assembly frame 20 can be supported in the installed posture, and thereby the reinforcing bar assembly frame 20 can be temporarily fixed at the installation position of the wall reinforcing bars 10 using the temporary fixing device. This can be easily carried out without using a lifting machine, and the lifting machine can be used for the above-mentioned three-dimensional front assembly unit U installation process.

Moreover, by attaching the brace members 4 to the dual-purpose vertical reinforcements 11A, there is no need to assemble special steel materials for attaching the brace members 4 to the reinforcing bar assembly frame 20, which reduces the number of steel materials used and the number of assembly steps. reduction can be achieved.

Furthermore, in the vertical reinforcement work, by using the vertical reinforcement transport jig 60, a plurality of vertical reinforcements 11 can be placed on both wall sides of the reinforcing bar assembly frame 20 in one lifting process using a lifting machine. Reinforcements can be easily arranged at the reinforcement pitch of the vertical reinforcements 11. Moreover, the vertical reinforcement conveying jig 60 and the plurality of mechanical fixing units 3 used in this vertical reinforcement work can be rationally reused in the subsequent vertical reinforcement work.

In addition, in the horizontal reinforcement work, each horizontal reinforcement 12 is lifted by a lifting machine and received and supported by the horizontal reinforcement receiving bracket 26, so that it is held at the reinforcement pitch of the horizontal reinforcement 12 on both wall sides of the reinforcing bar assembly frame 20. As a result, each horizontal reinforcement 12 can be easily assembled to both wall surfaces of the reinforcing bar assembly frame 20 without using a lifting machine, and the lifting machine can be used in the above-mentioned three-dimensional pre-assembly unit installation process. It can be used for vertical reinforcement work, etc.

In the three-dimensional pre-assembled unit installation process, the lower part of the three-dimensional pre-assembled unit U, which was installed in the installation posture at the wall construction position Pb at the construction site Sa, is installed at the wall construction position Pb using a lifting machine. By welding and joining to the lower frame 40, the three-dimensional pre-assembled unit U can be easily installed at the wall construction position Pb.

As a result, the wall reinforcing bars 10 used in the reinforced concrete wall W in which the plurality of equipment openings 1 are formed can be used as a three-dimensional pre-assembled unit U having the plurality of equipment openings 1 properly, while improving workability. In addition, the three-dimensional pre-assembled unit U can be easily installed at the wall construction position Pb at the construction site Sa with the plurality of equipment openings 1 properly provided.

[Another embodiment]
Another embodiment of the present invention will be described.
Note that the configurations of the different embodiments described below are not limited to being applied individually, but can also be applied in combination with the configurations of the above embodiments or other separate embodiments.

(1) In the above embodiment, as a wall reinforcing reinforcement construction method, a part of the vertical reinforcement 11 is used as the dual-purpose vertical reinforcement 11A that also serves for attaching the retainer member 4, and the reinforcement is assembled in a lying position in the yard Y where the frame is assembled. Although the example includes the step of assembling the dual-purpose vertical reinforcement 11A at a predetermined position with respect to the pedestal 20, the present invention is not limited to this. It is also possible to omit the dual-purpose vertical reinforcement pre-assembly process.

(2) In the above embodiment, as a wall reinforcing bar arrangement method, the lower pedestal 40 that supports the three-dimensional pre-assembled unit U is installed at the wall construction position Pb, and the three-dimensional pre-assembled unit U is attached to the wall in the three-dimensional pre-assembled unit installation process. After being installed on the lower frame 40 at the construction position Pb, the lower part of the three-dimensional pre-assembled unit U is welded to the lower frame 40 in the three-dimensional pre-assembled unit installation process, and the three-dimensional pre-assembled unit U is installed at the wall construction position Pb. However, the present invention is not limited to this, and for example, after the three-dimensional pre-assembled unit U is installed on the slab 51 at the wall construction position Pb in the three-dimensional pre-assembled unit installation process, the three-dimensional pre-assembled unit U is installed in the three-dimensional pre-assembled unit installation process. may be installed on the slab 51 at the wall construction position Pb using anchor bolts or the like.

1 Equipment opening 3 Mechanical fixing part 4 Bracing member 10 Wall reinforcing bars 11 Vertical bars 11A Dual-purpose vertical bars 12 Horizontal bars 20 Reinforcement assembly frame 24 Equipment frame 26 Horizontal bar receiving bracket 40 Lower frame 60 Vertical bar transport jig 60a Vertical bar through hole Pa Wall reinforcing bar assembly position Pb Wall construction position Sa Erecting site Sb Pre-assembly construction site U Three-dimensional pre-assembly unit Y Frame pre-assembly yard

Claims (6)

A wall reinforcing reinforcement method for arranging wall reinforcing bars in a reinforced concrete wall in which a plurality of equipment openings are formed,
A reinforcing bar assembly frame, which is provided with a plurality of equipment frames that form the equipment opening, is temporarily fixed in the installation position at the wall reinforcing bar assembly position of the pre-assembled construction site, and is installed on the wall side of the reinforcing bar assembly frame, which is provided with a plurality of equipment frames forming the equipment opening. a three-dimensional pre-assembled unit assembly step of pre-assembling the three-dimensional pre-assembled unit in an installation posture by assembling the plurality of wall reinforcing bars cut into predetermined lengths in a lattice shape at a predetermined reinforcement pitch;
After the three-dimensional pre-assembled unit is pre-assembled, a lifting machine is used to release the temporary fixing of the reinforcing bar assembly frame at the wall reinforcing bar assembly position, and the three-dimensional pre-assembled unit is installed on the wall at the construction site. A wall reinforcing bar arrangement method that includes the installation process of three-dimensional pre-assembled units that are installed at specific locations. The pre-assembly construction site is divided into a pre-assembly yard for pre-assembling the reinforcing bar assembly frame,
Prior to the three-dimensional pre-assembly unit assembly process, a reinforcing bar assembly pedestal pre-assembly step of pre-assembling the reinforcing bar assembly pedestal in a lying position with the equipment frame provided in the pedestal pre-assembly yard;
a step of arranging a reinforcing bar assembly frame, using the lifting machine to raise the previously assembled reinforcing bar assembly frame in a lying position to an installation position, and arranging the raised reinforcing bar assembly frame at the wall reinforcing bar assembly position;
The wall reinforcing bar arrangement method according to claim 1, further comprising a step of temporarily fixing the reinforcing bar assembly frame placed at the wall reinforcing bar assembly position to the wall reinforcing bar assembly position. The vertical bars of the wall reinforcing bars include dual-purpose vertical bars that are also used for attaching a retaining member that supports the reinforcing bar assembly frame in an installed posture,
a dual-purpose vertical reinforcement pre-assembly step of assembling the dual-purpose vertical reinforcement at a predetermined position with respect to the reinforcing bar assembly frame in a lying position in the pedestal pre-assembly yard;
3. The wall reinforcing bars according to claim 2, further comprising, prior to the reinforcing bar assembly pedestal temporary fixing step, a bracing member attaching step of attaching the bracing member to the dual-purpose longitudinal reinforcement to support the reinforcing bar assembly pedestal in an installed posture. Reinforcement method. In the three-dimensional pre-assembled unit assembly process, a vertical reinforcement conveying jig is used, in which a plurality of vertical reinforcement through holes through which the vertical reinforcement of the wall reinforcing bars are passed are formed at the reinforcement pitch of the vertical reinforcement. This includes the vertical reinforcement work of arranging the vertical reinforcement on the wall side of the assembly frame,
In the vertical reinforcement work, a mechanical fixing section is removably attached to one end of the vertical bars, and a predetermined number of the vertical bars are arranged so that the mechanical fixing section is received by the vertical bar conveying jig. After passing the vertical reinforcement through the vertical reinforcement hole, the lifting machine is used to lift a predetermined number of the vertical reinforcement together with the vertical reinforcement transport jig, and the lifted vertical reinforcement is placed on the wall surface of the reinforcement assembly frame. The wall according to claim 1, wherein reinforcement is arranged at a predetermined position on the side of the wall, the mechanical fixing section is removed from one end of the arranged vertical reinforcement, and the mechanical fixing section is recovered together with the longitudinal strip conveying jig. Rebar arrangement method. The wall surface side of the reinforcing bar assembly frame is provided with a plurality of horizontal bar receiving metal fittings that receive and support the horizontal bars of the wall reinforcing bars at a reinforcement pitch of the horizontal bars,
The three-dimensional pre-assembled unit assembly step includes a horizontal reinforcement work in which the horizontal reinforcement is received by the horizontal reinforcement receiving metal fittings in order from the bottom using the lifting machine, and the reinforcement is arranged on the wall side of the reinforcing bar assembly frame. The wall reinforcing bar arrangement method according to claim 1. A lower frame supporting the three-dimensional pre-assembled unit is installed at the wall construction position,
Claims 1 to 3, further comprising a three-dimensional pre-assembled unit installation step of joining the lower part of the three-dimensional pre-assembled unit installed at the wall construction position to the lower pedestal and install the three-dimensional pre-assembled unit at the wall construction position. The wall reinforcing bar arrangement method described in any one of 5.

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