JPH0438030Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is based on the use of H steel for retaining walls (for example, H steel that becomes the parent pile in the horizontal sheet pile construction method, and H steel that is buried in soil piles in the soil pile construction method). The present invention relates to a handrail post mount for a retaining wall used to install a safety handrail post at the upper end.

[Conventional technology]

Conventionally, when installing a safety handrail at the upper end of the H steel of a retaining wall, as shown in Fig. A base jack c for a single pipe can be fixed with an anchor bolt d, and a single pipe e for a handrail support can be attached to this base jack c, or a steel sleeve f can be embedded in the girder concrete b as shown in Fig. 6. A single tube e for the handrail support was inserted into the holder.

[Problem that the invention attempts to solve]

In all of the above conventional examples, the safety handrail could not be installed until the girder concrete b was cast and the girder concrete b developed a predetermined strength. For this reason, if the ground excavation precedes the girder concrete b, the ground inside the retaining wall will be excavated without a safety handrail, which poses a safety problem.

The present invention was developed in view of the above-mentioned conventional drawbacks, and its purpose is to provide a handrail with a simple structure that allows safety handrails to be easily and reliably installed even before the girder concrete is poured. The purpose is to provide stanchion fittings.

[Means for solving problems]

In order to achieve the above objective, the technical measures taken by the present invention are as follows. That is, the handrail post attachment device for a retaining wall according to the present invention has a shaft body that fits the handrail post erected on the top surface of the base plate, and a plurality of locking pieces on the bottom surface, and a plurality of locking pieces between these locking pieces. T
The T-shaped groove is vertically disposed to form a groove, and the T-shaped groove is fitted into the H steel web of the retaining wall and one flange.

[Effect]

According to the above configuration, the T-shaped groove formed between the locking pieces on the lower surface of the base plate is connected to the H-shaped groove of the locking wall.
By fitting the steel web with one flange, the base plate is supported by the upper end of the H steel, and by fitting the T-shaped groove with the web and flange, the base plate and, by extension, the upper surface of the base plate is supported. Planar displacement of the installed shaft body is prevented.

In this state, the lower end of the handrail post is fitted to the shaft, and a handrail is constructed between the handrail posts to form a safety handrail.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 and 2 show a handrail post mount A for a retaining wall according to the present invention, and FIGS. 3 and 4 show the handrail post mount A in use. B is a retaining wall, C is a soil pile, D is an H steel, E is a handrail support made of a single pipe, and F is a handrail made of a single pipe.

The handrail support mount A is constructed as follows.

That is, as shown in FIGS. 1 and 2, this handrail support mount A has a cylindrical shaft 2 erected on the upper surface of the base plate 1 to fit with the handrail support E, and has at least Three locking pieces 3, 4, and 5, that is, a locking piece 3 that can come into contact with the outer surface of one flange 6a of the H steel D, and a locking piece that can come into contact with the inner surface of the flange 6a and both sides of the web 6b. Stop piece 4,
5, and a T-shaped groove 7 between these locking pieces 3, 4, 5 that fits into the flange 6a and web 6b.
Further, on the lower surface of the base plate 1, protrusions 9 with threaded holes into which the tightening bolts 8 are screwed are provided vertically.

By using the above-mentioned handrail post attachment tool A, the retaining wall B can be installed before placing the girder concrete 11.
A safety handrail can be installed at the top end of the

That is, as shown in FIGS. 3 and 4, a part of the upper end of the soil pile C is removed to expose the upper end of the H steel D, and then the above-mentioned T-shaped groove 7 is Fit the flanges 6a and webs 6b of the steel D, tighten them with the tightening bolts 8 if necessary, and attach a plurality of handrail support fixtures A to the H steel D...
Fix it to the upper end of the In this state, the lower end of the handrail support post E is fitted to the shaft body 2, and a handrail F is constructed between the handrail support posts E to constitute a safety handrail for fall prevention.

After that, the girder concrete 11 will be placed and the ground inside the retaining wall B will be excavated.

In addition, when pouring the girder concrete 11, as shown in FIG. The girder concrete 11 can be placed in this state.

In the illustrated embodiment, the base plate 1
is the upper plate 1 to which the lower end of the shaft body 2 is welded.
a and the lower plate 1b to which the upper ends of the locking pieces 3, 4, 5 are welded together with a plurality of bolts and nuts 10...
Although it is constructed by connecting the plates to each other, it goes without saying that it may be a single plate. Furthermore, in the above embodiment, the handrail support post E is fitted to the outside of the shaft body 2, but if the shaft body 2 is cylindrical as shown, the inner diameter is the outside diameter of the handrail support post E. It is also possible to set the handrail support post E to the inside of the shaft body 2 by setting it slightly larger than the above.
Furthermore, depending on the settings of the vertical dimensions of the locking pieces 3, 4, 5 (depth of the groove 7) and the spacing between the locking pieces 3, 4, 5 (width of the groove 7), the tightening bolts 8... Even if the handrail post E is not tightened and fixed to the H steel D, the handrail post E will not wobble or the handrail post attachment fixture A will not come off unexpectedly.
... are not necessarily necessary, and it is possible to omit them. Further, in the above embodiment, the retaining wall B is illustrated using a row of soil pile columns, but the handrail column attachment tool A can be similarly attached to the upper end of the H steel in the horizontal sheet pile construction method.

[Effect of idea]

Since the present invention has the above-described configuration, a safety handrail can be installed at the upper end of the H steel of the retaining wall before pouring concrete to prevent falls.

Moreover, by fitting the T-shaped groove formed between the locking pieces on the lower surface of the base plate into the web of the H steel of the retaining wall and one flange, the base plate is supported by the upper end of the H steel. In addition, the fit between the T-shaped groove and the web and flange prevents the base plate and, by extension, the shaft mounted on its upper surface from shifting in planar position, so that the safety handrail can be installed reliably. .

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention,
Figure 1 is a perspective view of the handrail post attachment for the retaining wall;
FIG. 2 is a rear view of the handrail post mount, FIGS. 3 and 4, and a schematic perspective view and longitudinal sectional view showing the handrail post mount in use. FIGS. 5 and 6 are explanatory diagrams of conventional examples. A...Handrail support mount, B...Holding wall, D
...H steel, E ... handrail support, 1 ... base plate, 2 ... shaft body, 3, 4, 5 ... locking piece, 7 ...
groove.

Claims (1)

[Scope of utility model registration request] A shaft body that fits with the handrail support is erected on the top surface of the base plate, and a plurality of locking pieces are vertically installed on the bottom surface with T-shaped grooves formed between these locking pieces, A handrail support mount for a mountain retaining wall, characterized in that the T-shaped groove is configured to fit into the H steel web of the mountain retaining wall and one flange.