JP2023172647A - Reinforcement bar mount and construction method of wall - Google Patents

Abstract

To provide a reinforcement bar mount that facilitates easy placement of transverse reinforcement bars in a wall.SOLUTION: A reinforcement bar mount 10 is used for arranging transverse reinforcement bars 4 to be embedded in a reinforced concrete wall 1. The reinforcing bar mount 10 comprises: at least a pair of pillars 20 which are arranged separately at a predetermined distance on a floor surface 2; a horizontal connecting member 21 which connects the pillars 20 to each other, and diagonal braces 12. Each of the pillars 20 comprises: a channel steel 23 which extends upward from the floor surface 2; and a plurality of reinforcement bar supports 24 which are provided alongside the channel steel 23 in a vertical direction and to which transverse reinforcement bars 4 are locked. The reinforcement bar supports 24 are hook-shaped to prevent the transverse reinforcement bars 4 from falling off.SELECTED DRAWING: Figure 4

Description

The present invention relates to a reinforcing bar frame for arranging horizontal reinforcement in a reinforced concrete wall, and a method of constructing a wall using this reinforcing bar frame.

Conventionally, a reinforcing bar frame for arranging reinforcing bars has been proposed (see Patent Documents 1 to 3).
Patent Document 1 discloses a scaffold for assembling reinforcing bars, a pair of mesh reinforcing bars installed on a slide ruler of this scaffolding for assembling reinforcing bars, joint material and horizontal vertical braces attached between the mesh reinforcing bars, A three-dimensional unit reinforcing bar is shown that includes a width adjustment/hanging jig fixed to the lower end of a scaffold for assembling reinforcing bars.

Patent Document 2 discloses a mesh panel that includes a frame material and reinforcing bars arranged vertically and horizontally on the receiving members of the frame material and tied together with wire. The mesh panels are lined up on site, and the ends of the reinforcing bars that meet are tied together with wire to arrange the reinforcing bars for the wall.
Patent Document 3 describes a reinforcing bar that includes a column that is an angle material, a short reinforcing bar that is orthogonally welded to the lower part of the column, and a short reinforcing bar that is combined in a V shape and welded in an angular shape to the upper part of the column. A trestle is shown. The short reinforcing bars at the bottom of this reinforcing bar frame are tied together along the main bars of the lower reinforcing bars and the distribution bars, and the short reinforcing bars at the top support the upper reinforcing bars.

Japanese Patent Application Publication No. 5-321467 Japanese Patent Application Publication No. 6-81473 Japanese Patent Application Publication No. 2012-7330

SUMMARY OF THE INVENTION An object of the present invention is to provide a reinforcing bar frame that can easily arrange horizontal reinforcement in a wall, and a method for constructing a wall.

The present inventors have developed a reinforcing bar frame for arranging transverse reinforcement of a reinforced concrete wall, which includes at least a pair of columns placed a predetermined distance apart on a floor surface, horizontal connecting members and diagonal connecting members connecting these columns. The present invention was developed by focusing on the fact that by providing a plurality of reinforcing bar receiving members on the support column, horizontal reinforcements can be locked to the reinforcing bar receiving members, and reinforcement can be easily arranged.
The reinforcing bar frame of the first invention (for example, the reinforcing bar frame 10 described below) is a reinforcing bar for arranging horizontal reinforcement (for example, horizontal reinforcement 4 described below) embedded in a reinforced concrete wall (for example, wall 1 described below). The frame includes at least a pair of pillars (for example, pillars 20 described below) arranged a predetermined distance apart on a floor surface (for example, floor surface 2 described below), and a horizontal connecting member (for example, , a later-described horizontal connecting member 21) and a diagonal brace (e.g., the later-described diagonal brace 12); ), and a plurality of reinforcing bar receiving members (for example, reinforcing bar receiving members 24 to be described later) that are provided in a plurality of rows in the vertical direction on the section steel and to which the horizontal reinforcements are locked, and the reinforcing bar receiving members are provided with a plurality of reinforcing bar receiving members arranged in the vertical direction on the shaped steel, and the reinforcing bar receiving members are provided with a plurality of reinforcing bar receiving members (for example, reinforcing bar receiving members 24 to be described later). It is characterized by a hook-like shape to prevent it from falling off.

According to this invention, the transverse bars are arranged at predetermined intervals in the vertical direction by locking the transverse bars to the hook-shaped (L-shaped) reinforcing bar receiving member of the reinforcing bar frame, and then the transverse bars are brought into contact with the transverse bars. The vertical reinforcements are arranged by placing the vertical reinforcements and temporarily fixing them with binding wires, etc. Therefore, even if the horizontal reinforcement of the wall has a large diameter, the horizontal reinforcement can be easily arranged.
Further, by using a plurality of reinforcing bar receiving members arranged in the vertical direction on the shaped steel constituting the support column, the horizontal reinforcement can be arranged at a predetermined height position. Furthermore, since the reinforcing bar receiving material is shaped like a hook (L-shape), it is possible to prevent the horizontal bars from falling off.
Further, the reinforcing bar frame was configured to include at least one pair of columns, and a horizontal connecting member and a diagonal brace that connect these columns. Therefore, the reinforcing bar frame has a simple configuration, and the reinforcing bar frame can be easily manufactured at low cost.

In the reinforcing bar frame of the second invention, the reinforcing bar receiving material is formed of a reinforcing bar material or a shaped steel, and includes a horizontal part (for example, a horizontal part 30 described later) whose base end side is fixed to a column, and a horizontal part (for example, a horizontal part 30 described later). It is characterized by comprising a vertical portion (for example, a vertical portion 31 described below) extending upward from the tip of the portion.

Here, examples of the reinforcing bar receiving material include reinforcing bars bent into a hook shape (L-shape) and angle steel.
According to this invention, the reinforcing bar receiving member provided on the column includes a horizontal portion whose base end side is fixed to the column, and a vertical portion extending upward from the tip of the horizontal portion. Therefore, by simply inserting the horizontal reinforcement into the reinforcing bar receiving member from above and placing it on the horizontal portion, the horizontal reinforcement is supported by the horizontal portion, and the vertical portion easily prevents the horizontal reinforcement from falling off.

A second method of constructing a wall according to the invention is a method of constructing a reinforced concrete wall using the above-mentioned reinforcing steel frame, the step of installing the reinforcing steel frame at a position on the floor surface where the wall is to be constructed ( For example, step S1) described below, a step of locking the horizontal reinforcement of the wall to a reinforcing bar receiving member of the reinforcement frame (for example, step S2 described later), and placing the vertical reinforcement of the wall in contact with the horizontal reinforcement A step of temporarily fixing the vertical reinforcement to the horizontal reinforcement (for example, step S3 described later), a step of leaving or removing the reinforcing bar frame (for example, step S4 described later), and a step of temporarily fixing the vertical reinforcement to the horizontal reinforcement a step of erecting a pair of wall forms (for example, wall form 8 described below) in the step 1 and pouring concrete inside the pair of wall forms (for example, step S4 described below). Features.

According to this invention, the horizontal reinforcement of the wall is arranged using a reinforcing bar frame, and in this state, the vertical reinforcement is arranged in contact with the horizontal reinforcement. Therefore, even if the horizontal and vertical reinforcements have large diameters, the horizontal and vertical reinforcements can be easily arranged and construction costs can be reduced.
Furthermore, since the reinforcing bar frame is installed at the location where the wall will be constructed, there is no need for space to unitize the horizontal reinforcement, and even if the construction site is narrow, the horizontal reinforcement can be easily arranged.

Advantageous Effects of Invention According to the present invention, it is possible to provide a reinforcing bar frame capable of easily arranging horizontal reinforcement in a wall, and a method for constructing a wall.

FIG. 1 is a front view of a wall constructed using a reinforcing bar frame according to an embodiment of the present invention. FIG. 3 is a sectional view taken along line AA and sectional view taken along line BB according to the embodiment. FIG. 2 is a front view of the reinforcing bar frame according to the embodiment. FIG. 2 is a front view and a CC sectional view of a pedestal unit that constitutes a reinforcing bar pedestal according to an embodiment. It is a flowchart of the procedure of constructing a wall using the reinforcing bar frame concerning an embodiment. FIG. 2 is an explanatory diagram of the wall construction procedure according to the embodiment (part 1, a state in which horizontal reinforcement is arranged on the reinforcing bar frame). FIG. 2 is an explanatory diagram of the wall construction procedure according to the embodiment (part 2, a state in which the vertical reinforcements are temporarily fixed to the vertical reinforcement lifting jig). FIG. 3 is an explanatory diagram of the wall construction procedure according to the embodiment (Part 3, a state in which vertical reinforcements are attached to horizontal reinforcements using a vertical reinforcement lifting jig). FIG. 4 is an explanatory diagram of the wall construction procedure according to the embodiment (No. 4, a state in which the wall formwork is erected and a concrete body is constructed); FIG.

The present invention is a reinforcing bar frame for arranging transverse reinforcement in a reinforced concrete wall, and a method for constructing a reinforced concrete wall using this reinforcing bar frame. Specifically, the reinforcing steel frame includes at least a pair of columns, a horizontal connecting member and a diagonal brace that connect these columns, and each column has a shaped steel installed on the floor and extending upward, and It is constructed by including a plurality of steel reinforcing bar receiving members arranged vertically on a shaped steel and to which horizontal bars are locked (FIGS. 1 to 4).
Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a wall 1 constructed using a reinforcing bar frame 10 according to an embodiment of the present invention. FIG. 2(a) is a cross-sectional view of the wall 1 taken along the line AA. FIG. 2(b) is a BB arrow view of the wall 1. FIG. 3 is a front view of the reinforcing bar frame 10.
The wall 1 is constructed on a floor surface 2, and includes a concrete body 3, and horizontal reinforcements 4 and vertical reinforcements 5 embedded in the concrete body 3 and double reinforced. The horizontal reinforcements 4 are reinforcing bars with a large diameter (for example, D25 or more and D41 or less), and are arranged at predetermined intervals p ₁ in the vertical direction. The vertical reinforcements 5 are arranged at predetermined intervals _p2 in the horizontal direction.

The reinforcing bar frame 10 is for arranging the horizontal reinforcements 4 of the reinforced concrete wall 1.
The reinforcing bar frame 10 includes a plurality of frame units 11 arranged on the floor surface 2 at a predetermined distance L in the wall length direction, and a diagonal brace 12 that extends obliquely with respect to the horizontal and connects the frame units 11 to each other. and.

4(a) is a front view of the gantry unit 11, and FIG. 4(b) is a view of the gantry unit 11 taken along the line CC.
The gantry unit 11 includes a pair of columns 20 that are disposed apart from each other by a predetermined distance D and extend upward, and a horizontal connecting member 21 that extends in the horizontal direction and connects the columns 20 to each other.
The pillars 20 each include a pair of base plates 22 fixed on the floor surface 2, a pair of channel steels 23 provided on these base plates 22, and a _{predetermined} interval p every other channel steel 23 in the vertical direction. The reinforcing bar receiving member 24 is provided at the horizontal bar 4 and the horizontal bar 4 is locked therein, and the brace connecting piece 25 is provided at the channel steel 23.

A through hole (not shown) is formed in the base plate 22, and an anchor bolt 6 buried in the floor surface 2 is inserted into the through hole, and a nut 7 is tightened.
The diagonal brace 12 is connected to the brace connecting piece 25 . This diagonal brace 12 is provided with a turnbuckle 13, and by rotating this turnbuckle 13, the length of the diagonal brace 12 can be adjusted.
The reinforcing bar receiving material 24 is formed by bending reinforcing bar material into a hook shape (L-shape). This reinforcing bar receiving member 24 includes a horizontal portion 30 whose base end side is welded and fixed to the channel steel 23, and a vertical portion 31 extending upward from the tip of the horizontal portion 30.

The procedure for constructing the reinforced concrete wall 1 using the above-mentioned reinforcing bar frame 10 will be explained with reference to the flowchart in FIG. 5.
In step S1, as shown in FIG. 6, a reinforcing bar frame 10 is installed at a position on the floor 2 where the wall 1 is to be constructed. Specifically, the anchor bolts 6 are buried in the wall 1 on the floor 2 in advance, and the frame unit 11 is assembled. The frame unit 11 is lifted up by a lifting machine, lowered to the position of the wall 1 on the floor surface 2, and fixed to the anchor bolt 6. Next, the gantry units 11 are connected to each other by diagonal braces 12.
In step S2, as shown in FIG. 6, the horizontal reinforcements 4 are arranged using the reinforcing bar frame 10. Specifically, the horizontal reinforcement 4 is inserted into the reinforcing bar receiving member 24 of the reinforcing bar frame 10 from above and locked therein. At this time, for the portion of the wall 1 below the predetermined height h from the ground surface, the worker manually lifts the horizontal reinforcement 4 and inserts it into the reinforcing bar receiving material 24. On the other hand, for the portion of the wall 1 exceeding the predetermined height h, the horizontal reinforcement 4 is lifted using an aerial work vehicle, a crane, etc., and inserted into the reinforcing bar receiving material 24.

In step S3, the vertical reinforcements 5 are arranged using the vertical reinforcement lifting jig 40. Specifically, first, as shown in FIG. 7, a vertical reinforcement lifting jig 40 is prepared. The vertical reinforcement lifting jig 40 has through holes 41 formed at predetermined intervals p ₂ through which the vertical reinforcements 5 (threaded reinforcing bars) are inserted. On the floor surface 2, the vertical bars 5 are inserted into the through holes 41 of the vertical bar lifting jig 40 and temporarily fixed with a reinforcing bar fixing tool (for example, a plate nut manufactured by Tokyo Tekko Co., Ltd.). In this state, as shown in FIG. 8, the vertical bar lifting jig 40 is lifted up by the lifting machine 42 so that the vertical bar 5 temporarily fixed to the vertical bar lifting jig 40 contacts the inside of the horizontal bar 4. Take it down. In this way, the vertical strips 5 of the wall 1 are placed in contact with the inside of the horizontal strips 4. Next, the vertical reinforcements 5 are arranged by temporarily fixing them to the horizontal reinforcements 4 using binding wires (not shown) or the like. Thereafter, the vertical reinforcement lifting jig 40 is removed from the vertical reinforcement 5 and removed.
In step S4, as shown in FIG. 9, a pair of wall forms 8 are erected with the horizontal reinforcements 4 and vertical reinforcements 5 in between, with the reinforcing steel frame 10 left in place, and concrete is placed inside the pair of wall forms 8. Concrete body 3 is constructed by pouring.

According to this embodiment, there are the following effects.
(1) By locking the horizontal reinforcements 4 to the reinforcing bar receivers 24 of the reinforcing bar frame 10, the horizontal reinforcements 4 are arranged vertically at predetermined intervals p _every other time, and then the vertical reinforcements are brought into contact with these horizontal reinforcements 4. The vertical reinforcements 5 are arranged by arranging the vertical reinforcements 5 and temporarily fixing them with binding wires or the like. Therefore, the horizontal reinforcements 4 and the vertical reinforcements 5 can be easily arranged.
Further, the reinforcing bar frame 10 is configured to include a plurality of columns 20, and a horizontal connecting member 21 and a diagonal brace 12 that connect these columns 20 to each other. Therefore, the reinforcing bar frame 10 has a simple configuration, and the reinforcing bar frame 10 can be easily manufactured at low cost.

(2) The reinforcing bar receiving member 24 provided on the column 20 is configured to include a horizontal portion 30 whose base end side is fixed to the column 20, and a vertical portion 31 extending upward from the tip of this horizontal portion. Therefore, by simply inserting the horizontal reinforcement 4 into the reinforcing bar receiving member 24 from above and placing it on the horizontal section 30, the horizontal reinforcement 4 is supported by the horizontal section 30, and the vertical section 31 easily prevents the horizontal reinforcement 4 from falling off. .
(3) The horizontal reinforcements 4 of the wall 1 are arranged using the reinforcing bar frame 10, and in this state, the vertical reinforcements 5 are arranged in contact with the horizontal reinforcements 4. Therefore, even if large-diameter reinforcing bars are used for the horizontal reinforcements 4, the horizontal reinforcements 4 and the vertical reinforcements 5 can be stably arranged, and construction costs can be reduced.
Further, since the reinforcing bar frame 10 is installed at the position where the wall 1 is constructed, there is no need for space to unitize the horizontal reinforcements 4, and even if the construction site is narrow, the horizontal reinforcements 4 can be easily arranged.

Note that the present invention is not limited to the above-described embodiments, and any modifications, improvements, etc. that can achieve the purpose of the present invention are included in the present invention.
For example, in the above-described embodiment, the reinforcing bar receiving material 24 is a reinforcing bar bent into a hook shape (L-shape), but the material is not limited to this, and may be made of angle-shaped steel.
Further, in the above-described embodiment, the wall formwork 8 is built in step S4 with the reinforcing bar frame 10 left in place, but the present invention is not limited to this. The reinforcing bar frame 10 is removed and the wall formwork 8 is built in this state. You can build it in.

1... Wall 2... Floor surface 3... Concrete body 4... Horizontal reinforcement 5... Vertical reinforcement 6... Anchor bolt 7... Nut 8... Wall formwork 10... Reinforced frame 11... Frame unit 12... Diagonal brace 13... Turnbuckle 20... Support column 21 ...Horizontal connecting member 22... Base plate 23... Channel steel 24... Rebar receiving material 25... Brace connecting piece 30... Horizontal part 31... Vertical part 40... Vertical bar lifting jig 41... Through hole 42... Lifting machine

Claims (3)

A reinforcing bar frame for arranging horizontal bars embedded in a reinforced concrete wall,
At least a pair of pillars arranged a predetermined distance apart on a floor surface, and a horizontal connecting member and a diagonal brace that connect the pillars,
Each of the columns includes a shaped steel extending upward from above the floor surface, and a plurality of reinforcing bar receiving members provided vertically in line on the shaped steel and to which the horizontal reinforcement is locked,
The reinforcing bar frame is characterized in that the reinforcing bar receiving material has a hook shape to prevent the horizontal reinforcing bars from falling off. The reinforcing bar receiving material is formed of reinforcing bar material or shaped steel, and includes a horizontal part whose base end side is fixed to a column, and a vertical part extending upward from the tip of the horizontal part. The reinforcing bar frame according to claim 1. A method of constructing a reinforced concrete wall using the reinforcing frame according to claim 1 or 2, comprising:
installing the reinforcing steel frame at a position on the floor where the wall is to be constructed;
a step of locking the horizontal reinforcement of the wall to a reinforcing bar receiving member of the reinforcing bar frame;
arranging the vertical reinforcements of the wall in contact with the horizontal reinforcements, and temporarily fixing the vertical reinforcements to the horizontal reinforcements;
a step of retaining or removing the reinforcing steel frame;
A method for constructing a wall, comprising the steps of: erecting a pair of wall forms with the horizontal reinforcement and the vertical reinforcement in between, and pouring concrete inside the pair of wall forms.

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