JP2514088Y2 - Concrete wall slitting material mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a slit material mounting device for mounting a slit material inside a concrete wall that is cast in situ.

[Prior Art] In a concrete structure cast in-situ, like a pillar and a waist wall, a pillar and a sleeve wall, if the pillar and the wall part are integrated, the wall part will be deformed in the event of vibration such as an earthquake. As the rigidity of the column becomes weaker because it hinders the
As shown in the figure, the pillar portion between the pillar portion 11 and the wall portion 12 should be
The slit structure S is provided vertically at a position close to 11, and the slit structure S absorbs the stress of the wall 12 and the pillar 11 at the time of vibration.

The slit structure S basically has a slit member 13 made of a flexible foam made of synthetic resin or the like in the wall portion 12. However, the slit member is simply embedded in a part of the wall portion 12. In the event of an emergency, a cross-section defect type that induces cracks in the wall 12 or a slit material is spread over the entire width of the wall 12 and joints are formed vertically on the outer wall surface or the inner and outer wall surfaces. For example, there is a complete slit type that forms 14. In addition, the form of the joint part 14 is a case where caulking is performed on joints formed by arranging ordinary joint bars having a trapezoidal cross section, and a synthetic resin cross section “M” or “co” so that coking is not required. In some cases, a joint material such as a character is buried.

At the time of construction, the slit material is placed between the formwork of the wall part 12 near the pillar part 11, and usually concrete is poured into the pillar part.
Although it is performed from the 11 side, since the slit material is a flexible material, it is necessary to securely hold this slit material.

Therefore, conventionally, in the case of the cross-section loss type, the slit material support member is nailed to the form of the wall portion 12, and in the complete slit type, a separator for holding the space between the form of the wall portion 12 is used. The discarding separator, which is not originally required, is placed near the pillar, and the slits are supported by the supporting metal fittings locked to this discarding separator, or supported by the reinforcing bars located near this. It was.

[Problems to be solved by the invention] However, when it is difficult to place nails or dispose of separators on the formwork due to the large number of rebars and formwork support fittings, etc., that are close to this area near the pillar 11. However, there is a problem that the slit material cannot be surely attached at a predetermined position due to poor workability.

Moreover, since the conventional means only partially supports the slit material, there is a risk that the flexible slit material may be arranged in a distorted state, and further, a discard separator may be arranged corresponding to the position of the slit material. However, there is a drawback that workability is significantly deteriorated.

The object of the present invention is to eliminate the above-mentioned conventional drawbacks, to eliminate the need for nailing or disposing of a separator, which can be attached by using a separator arranged at a normal position, and which ensures a slit material. It is an object of the present invention to provide a slit material attaching device which can be arranged and can cope with the case where the distance between the slit material and the pallet is not uniform.

[Means for Solving the Problem] A slit material attaching device for a concrete wall according to the present invention is a slit material (13) for forming a slit structure portion (S) on a wall portion (12) of a concrete structure cast in situ. A holding plate (2) having a slit material (13) attached to the front side and opposing engagement grooves (3, 3) formed in the vertical direction on the back side.
And a support bar (4) provided with an engaging portion (6) for engaging with the engaging groove (3) at the tip of the screw rod (5), and being screwed to the support bar (4). It is composed of a tightening fixture (7) adapted to be tightened and fixed by a tightening screw (7b) to a separator (8) which is passed over to maintain a space between the molds (15, 15). .

[Operation] The holding plate (2) is set so that the slit material (13) on the front surface side is arranged at a predetermined position, and the engaging portion at the tip of the support bar (4) is fitted in the engaging groove (3) on the rear surface side. (5) is engaged, and the fastening fixture (7) screwed to the support bar (4) is rotated to position the fastening fixture (7) and the separator (8), The tightening fixture (7) is fitted into the separator (8) and is tightened and fixed by the tightening screw (7b).

A plurality of separators (8) are arranged in the height direction of the wall portion (12), but the support bars (4) are arranged on the respective separators (8), so that the slit material (12) is arranged at a plurality of positions. Supported by. In this case, when the height of the slit material (13) and the height position of the separator (8) do not correspond to the optimum position, the support bar (4) is slid up and down with respect to the holding plate for positioning. To do. The positional relationship between the separator (8) and the slit material (13) is also set at a predetermined position by rotating the tightening fixture (7) and adjusting the movement forward and backward.

[Embodiment] An embodiment of the slit material attaching device for a concrete wall according to the present invention will be described with reference to FIGS.
The same parts as those in the conventional example described in the figure are designated by the same reference numerals.

In the figure, 1 is the wall portion 12 of the concrete structure,
In particular, a slit material attaching device for attaching the slit material 13 to form the slit structure S in the wall portion close to the pillar portion 11, wherein the slit material 13 is attached to the front surface side with an adhesive or the like and the rear surface side is provided. A holding plate 2 in which opposed engaging grooves 3, 3 are formed in the vertical direction, and a support bar 4 in which an engaging portion 6 that engages with the engaging grooves 3, 3 is provided at the tip of a screw rod 5. ,
It is constituted by a fastening fixture 7 adapted to be fastened by a screw 7b to a separator 8 which is screwed to the support bar 4 and is inserted to maintain the space between the molds 15 and 15. .

Although the width of the slit material 13 differs depending on whether it is a cross-section slit material or a complete slit material, the height thereof is the height corresponding to the height of the wall portion 12 to be arranged. Further, the height of the holding plate 2 corresponds to this, but the cross-sectional shape of the holding plate 2 is arbitrary and various types can be used. For example,
In the case of attaching the wall portion 12 to the outer surface side or the inner / outer surface side, the holding plate 2 may be formed in an L-shape and one side surface thereof may be brought into contact with the mold 15.

The holding plate 2 is made of synthetic resin, but the front side is flat and the rear side is a "U" shaped fitting groove.
3, 3 are formed to face each other in the vertical direction, and the slit material 13 is attached to the front surface side with an adhesive or the like. Further, in the embodiment, the bent portions are provided at both ends in order to obtain strength with a thin plate material.
2a is formed.

The support bar 4 is formed by attaching an engaging portion 6 to the tip of a threaded rod 5, and the engaging portion 6 extends outwardly on both sides of an attaching portion 6a having a substantially U-shaped cross section. As a result, the engaging piece 6b is formed, and the engaging piece 6b is formed into the engaging grooves 3, 3
Is adapted to be engaged with.

The tightening fixture 7 is provided with a narrowed portion 70 in the middle of a clip portion 7a having a substantially U-shaped cross section.
Through the screw hole formed at the upper part of 7a, the above-mentioned screw rod 5
The clip portion 7a is screwed in and the opening portion of the clip portion 7a is fitted in the separator 8 and is fixed by tightening with a tightening screw 7b. Tighten the tightening screw 7b with the separator 8
When it is screwed so as to be pressed against the side surface of the separator 8, the separator 8 is clamped by the narrowed portion 70 and the clip portion 7a is firmly fixed to the separator 8 and can be held without rotating with respect to the separator 8.

Next, to describe an attachment example, in a state where the pillar 11 and the wall 12 are used as a formwork, the holding plate 2 having the slit material 13 attached to the front side is arranged as close to the pillar 11 as possible. Engage the engagement piece 6b of the engagement portion 6 at the end of the support bar with the engagement groove 3, 3 on the back side of the holding plate 2 and rotate the tightening fixture 7 screwed to the support bar 4. The clamp fixture 7 and the separator 8 to be positioned, and the clip portion of the clamp fixture 7
7a is fitted into the separator 8 and is tightened and fixed by the tightening screw 7b.

The separator 8 arranged to set and hold the space between the molds 15 of the wall portion 12 is usually arranged at a height interval of 500 mm to 600 mm, although it depends on the height of the wall portion (12). Because
The support bar (4) is arranged on each separator (8), so that the slit material (13) is supported at a plurality of locations. In this case, even when the height of the slit material 13 and the position where the separator 8 is arranged do not correspond to the optimum position, the support bar 4 is slid up and down with respect to the holding plate 2 to optimize the slit material 13. It can be supported at a position, and the positional relationship between the separator 8 and the slit material 13 can be set to an optimum position by rotating the tightening fixture 7 and moving it back and forth. If necessary, the reinforcing bar 9 can be erected in the supporting portion 6a to make the holding state more reliable. The support bar 4, the tightening fixture 7, and the separator 8 in the slit material attaching device 1
Is embedded in the wall by concrete pouring of the wall 12.

FIGS. 2 and 4 show an example in which the slit material is arranged in a complete slit type, but the structure for attaching the slit material as described above can of course be applied to the case of mounting in the cross-section defect type. Further, although a joint bar 10 having a trapezoidal cross section is used for forming joints and a caulking process is shown, a joint material made of synthetic resin which does not require caulking can be arranged. Of course.

[Advantage of the Invention] According to the slit material attaching device for the concrete wall according to the present invention, the slit material is attached to the front surface side of the holding plate to dispose the holding plate, and the holding plate is supported by the support bar. Since this is a form, there is no fear that the slit material is arranged in a partially distorted state.

Further, unlike the conventional case, it is not necessary to dispose a discarded separator in the vicinity of the pillar portion, and since it is possible to surely mount using the separator arranged at the normal position, workability at the time of mounting the slit material is improved. It can be significantly improved.

Since the support bar can be slid up and down with respect to the holding plate, it is possible to arbitrarily change the position where the slit material should be supported in relation to the height position of the separator, and when fixing the support bar to the separator. Since the length can be adjusted by rotating the tightening fixture, it can be securely fixed even if the gap between the slit material and the separator is not uniform. No need to prepare.

Since the support bar is clamped and fixed to the separator, the holding plate with the slit material supported by this can be arranged in a self-supporting manner, and even in the case of the cross-section loss type, the slit material or the holding plate was brought into contact with the formwork. The slit material holding member does not need to be nailed to the frame unlike the conventional case.

[Brief description of drawings]

1 to 4 show an embodiment of a device for attaching a slit material to a concrete wall according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a perspective view showing a mounting state, and FIG. 3 is a fastening fixture. And FIG. 4 is a plan view showing the positional relationship between the slit material and the slit material attaching device. FIG. 5 is a plan view for explaining the slit structure portion of the concrete wall. 11; pillar portion, 12; wall portion, 13; slit material, 15; formwork 1; slit material attaching device, 2; holding plate, 3; engagement groove 4; support bar, 5; screw rod, 6; engagement Part, 7; tightening fixture 8; separator, 11; pillar part, 12; wall part

Claims (1)

(57) [Scope of utility model registration request] 1. A device for mounting a slit material (13) at a predetermined position when forming a slit structure portion (S) on a wall portion (12) of a concrete structure to be cast in situ, the slit being provided on the front side. A holding plate (2) to which a material (13) is attached and on the back side of which engaging grooves (3, 3) facing each other are formed in the longitudinal direction, and the engaging groove at the tip of a screw rod (5). Support bar (4) provided with engaging part (6) for engaging with (3)
And the support bar (4) is screwed together with the form (15, 1
A slit in a concrete wall, characterized in that it comprises a tightening fixture (7) adapted to be tightened and fixed by a tightening screw (7b) to a separator (8) passed over to hold the space of 5). Material mounting device.