JPS6320780Y2 - - Google Patents

Description

[Detailed explanation of the invention] The present invention is a method for rationally and reliably constructing sectional defects in reinforced concrete structures or steel-framed reinforced concrete structures based on a new seismic design, by installing slit materials especially at the edges of columns and walls. This invention relates to a support device for structural slit materials.

Conventionally, this type of slit material was developed in 1983.
As described in Japanese Patent No. 123409, the main body of the shear slit making tool is integrally provided so as to protrude within the wall formwork at the gap between the column and the wall, with an appropriate interval so as to face each other.

However, in the above-mentioned form, especially in the concrete pouring process, concrete is often poured in the order of columns, descending walls, and waist walls, so the strong side pressure during concrete pouring at the columns causes There was a drawback that the main body of the shear slit making tool could be deformed or moved.

In addition, as another conventional example, when the edges are completely cut using veneer, etc., a concentrated load is applied to the column formwork.
The disadvantage is that it increases the risk of construction.

This idea was created in view of the above-mentioned drawbacks of the conventional technology.
This invention is intended to solve this problem, and the structure of the invention will be explained next with reference to the drawings of the embodiment.

Fig. 1 is a perspective view of a slit material support device showing the first embodiment of this invention, and Fig. 2 is a plan view cut away at the center of the slit material support device. A thin slit support plate having two protruding ribs 1 parallel to each other along the longitudinal direction of one side.
a, 1a are provided protrudingly, and 3 are provided in the vertical direction of the central part.
Through-holes 1b are bored at certain locations.

Reference numerals 2, 2, . . . denote support legs which are fixedly arranged in parallel on one side of the slit support plate 1 at required upper and lower positions, respectively, and are formed by bending round bars into a mountain shape.

Reference numerals 3 and 3 designate support portions fixedly disposed on the tip surfaces of each pair of support legs 2, 2, and are constructed of pipes having a required length and diameter.

As shown in FIG. 3, the support device according to the first embodiment consists of a slit material (elastite, An elastic joint material (mainly made of sponge, styrene foam, etc.) A is placed in the column formwork P1 and wall formwork P2 in a state in which it is fixed by an appropriate means such as adhesive.

Further, an appropriate double-threaded bolt B is inserted into the pipes of the supporting parts 3, 3, and inserted between the wall formwork P2, and tightened with nuts N from the outer surface of the bolt B to form the slit material A.
is installed at a predetermined position near the pillar.

In addition, when pouring concrete, concrete is poured in the order of descending walls and waist walls from within column formwork P1, and after curing, nuts N are removed and bolts B are extracted, and then wall formwork P2 and supporting parts 3 are poured. The cone C interposed between the end faces of the supporting portion 3 is removed, and the end face of the support portion 3 is filled with mortar or caulking.

M indicates a joint bar, which is removed after the concrete has cured and subjected to caulking, etc.

Note that the slit material may be attached after the slit support plate is attached to the wall formwork.

According to the first embodiment with the above structure, the slit material can be easily and reliably attached to the column edge, and the concrete is poured into the slit support plate 1 by pouring concrete into the column formwork. Through hole 1
Since it flows into the wall formwork through b..., the concentrated load on the slit material and column formwork is reduced, and there is no need to worry about construction risks, deformation, movement, etc.

In addition, the through hole 1b of this slit support plate 1
It is also possible to easily place reinforcing bars from the column side to the wall side through the column, which has the effect of preventing cracks at the edge of the column.

The shape of the support leg according to the first embodiment may be a flat plate instead of a round bar, or it may be supported by a single leg with a thicker wire diameter.

FIG. 4 is a partial front view showing the second embodiment, and FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4. In providing the through hole 21b in the slit support plate 21,
The cut-out pieces are cut along the through hole 21b and serve as a pair of support legs 22, 22.

Further, reference numerals 23 and 23 indicate hole-shaped support portions provided near the tip thereof, through which bolts B can be inserted directly to attach the support portion to the wall formwork in the same manner as in the previous stage.

According to the second embodiment, compared to the first embodiment, the support legs and the support portion are integrally cut and raised from the slit support plate, so that the through holes can be formed at the same time, fewer parts are required, and the cost is lower. It has the effect that it can provide.

Note that a separator for tightening the formwork may also be used in place of the bolt.

According to this invention as described above, it is possible to easily and reliably attach the slit material to the edge of a column in a reinforced concrete structure or a steel-framed reinforced concrete structure. The new seismic design is highly reliable and has great practical effects, as the concentrated load on the frame and slit material is reduced, and there is no risk of construction or deformation or movement of the slit material.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the central portion of the same, and FIG.
FIG. 4 is a partial front view of the second embodiment, and FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4. 1: Slit support plate, 2: Support leg, 3:
Support part, A...slit material, B...bolt, P1
...Column formwork, P2...Wall formwork.

Claims (1)

[Scope of utility model registration request] A through hole is provided in the vertical direction in the center of a slit support plate having the required size, and several support parts are installed in parallel on one side of the slit support plate for inserting and supporting bolts to be installed orthogonally to the wall formwork. A support device for structural slit materials.