JPS6117120Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a reinforcing material configured to be inserted into a perforation in a ground or the like and press-fitted to the circumferential wall of the perforation to reinforce the ground or the like.

Conventionally, this type of reinforcing material A is composed of a cylindrical member having a slit a of a constant width in the generatrix direction, a tapered part b at the tip end, and a stopper c at the base end, as shown in Fig. 1. As shown in FIGS. 2 and 3, the reinforcing material A is driven into a perforation B having a smaller diameter than the diameter of the reinforcing material A, and is elastically expanded outward due to the presence of the slit a. A frictional force is generated between the reinforcing material A and the inner peripheral wall of the perforated portion B to generate a pull-out strength. Note that d in the figure
is a plate fitted to the main body of the reinforcing material A.

However, in the conventional reinforcing material, if the inner diameter of the perforated part B is larger than the outer diameter of the reinforcing material A, the reinforcing material A does not spread, and there is no frictional force between it and the inner circumferential wall of the perforated part B. It was extremely dangerous and could not be used. Furthermore, if the inner circumferential wall of the perforated portion B became rough, the frictional force would be reduced and it could not be used. Furthermore, relying only on frictional force is not reliable in anchoring the reinforcing material to the perforated part.
The scope of use was limited.

The present invention was proposed to eliminate these drawbacks, and the diameter is gradually increased from the proximal end to the distal end, and the distal edge is cut with an inclined plane obliquely intersecting the axis. A slit 2 is cut out along the generatrix direction of the truncated cone-shaped body 1 formed in the inclined end portion 1a, the gap gradually increasing from the base end to the distal end. This relates to the characteristic reinforcing material.

In the figure, numeral 3 denotes a stopper which is fitted onto the base end of the main body 1 and has a spherical outer peripheral surface.

When reinforcing the ground with the reinforcing material according to the present invention, as shown in FIG. (See figure) A push rod 6 is driven or inserted into the main body 1 to push out the mortar 5 from the main body 1 and press it against the inner circumferential wall of the perforated part B, thereby anchoring the main body 1 in the perforated part B. (See FIG. 7) Note that the push rod 6 may be removed after the mortar 4 has properly hardened. In the figure, numeral 7 denotes a plate that is clamped to the ground around the perforation 5 via the stopper 3.

As described above, the reinforcing member according to the present invention is formed in the shape of a truncated cone whose diameter gradually increases from the base end to the distal end. When inserted, the tip of the main body 1, which has a large diameter and is expanded outward, is pressed against the inner circumferential wall surface of the perforated portion 5, causing friction with the wall surface.
It is inserted into the perforated part 5 and anchored there at the same time. At this time, as mentioned above, mortar 4
By using a hardening material in combination, filling the body 1 with the hardening material, and further inserting or driving the push rod 6 into the body 1, the hardening material is bonded to the body 1 and the perforated portion 5.
The main body 1 is reliably anchored in the perforated portion 5 by press-fitting between the inner wall surface and the inner wall surface.
The reinforcing material of the present invention is anchored without being affected by the hole diameter of the perforated part 5. At this time, the diameter of the main body 1 gradually increases as it reaches the tip, and the hardened material forms the slit 2. Since the reinforcing material of the present invention cannot be contracted, the anchoring performance of the reinforcing material to the perforated portion 5 is further improved.

Furthermore, in the reinforcing material according to the present invention, the main body 1
Since the width of the slit 2, which is provided along the generatrix direction of the slit 2, gradually increases as it reaches the tip, when the pushing rod 6 is driven or inserted into the main body 1 loaded with hardening material, the hardening material will not be hardened. The material is wide slit 2
Since the hardening material is filled into the perforated portion 5 from the tip, the filling efficiency of the hardening material is improved.

Furthermore, as described above, the width of the slit 2 gradually increases from the base end to the distal end of the main body 1, so when filling the hardening material into the main body 1, air is extracted from the slit 2. Therefore, filling of the hardening material is easily performed. Furthermore, since the width of the base end of the slit 2 is narrow, the hardening material filled in the main body 1 is less likely to overflow. Furthermore, at this time,
The leading edge of the main body 1 is formed into an inclined end edge 1a cut by an inclined surface obliquely intersecting the axis of the main body 1,
Since the cross-sectional area of the opening end surface of the main body 1 is configured to be large, the filling operation with the hardening material becomes easier.

The push rod 6 that has been driven or inserted into the main body 1 is not only recovered and reused, but also hardened reinforcing bars can be used as the push rod 6 and buried in the main body 1 to improve the strength of the ground. It can be reinforced against stress.

Furthermore, as described above, by making the outer peripheral surface of the stopper 3 disposed at the base end of the main body 1 spherical, the plate 7 can be easily adapted to the undulations of the ground, as shown in FIG. Can be tightened.

In the reinforcing material of the present invention, the tip of the body 1 may be formed into a tapered portion 1a' as shown in FIG. 9, and the stopper 3 may be fitted and welded to the body 1 (see FIG. 10). ), the surface of the main body 1 may be provided with unevenness, and furthermore, the stopper 3 may be attached to the main body 1.
When the diameter is smaller than the tip of the main body 1, a stopper ring 8 is attached to the main body 1, and the plate 7 fitted to the main body 1 is supported by the stopper ring 8. (See FIG. 11) Furthermore, a plug 9 may be fitted to the base end of the main body 1 to prevent the hardening material from flowing out when filled. (See Figure 12) As mentioned above, the reinforcing material according to the present invention has a simple structure, has excellent anchoring performance in the perforated part of the ground, and a reinforcing effect on the ground, is easy to operate, is suitable for mass production, and is economical. This proposal has many advantages.

[Brief explanation of the drawing]

Figure 1 is a plan view of a conventional hardened material, Figures 2 and 3 are longitudinal cross-sectional views and cross-sectional plane views showing its usage, Figure 4 is an oblique view of the hardened material according to the present invention, and Figure 5. 7 to 7 are vertical cross-sectional views showing construction steps using the same reinforcing material, and FIG. 8 is a vertical cross-sectional view showing other construction examples.
9 and 10 are partial plan views showing other embodiments of the hardening material according to the present invention, FIG. 11 is a plan view showing still another embodiment, and FIG. 12 shows still another embodiment. FIG. 1...Main body, 1a...Slanted edge portion, 2...Slit.

Claims (1)

[Scope of utility model registration request] The generatrix of the frusto-conical body 1 is formed at an inclined end portion 1a whose diameter gradually increases from the base end to the distal end, and where the distal end edge is cut by an inclined surface obliquely intersecting the axis. A reinforcing material characterized by having a slit 2 having a gap that gradually increases from the proximal end to the distal end along the direction.