JPH0220264Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to the dismantling block of mountain retaining shoring.

(Conventional technology) Conventional methods for dismantling mountain retaining shoring include scraping off the concrete backfill between the uprise and sheet piles, cutting off struts, etc., or expanding and contracting hydraulic jacks, etc. It was hot.

However, scraping backfill material is accompanied by vibration and noise.
Cutting struts etc. damages expensive steel materials, and extending/contracting hydraulic jacks etc. requires control of their strokes and is accompanied by problems such as time-consuming assembly and disassembly.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems and aims to provide a dismantling block that can extremely easily dismantle mountain retaining supports without damaging the steel materials.

(Means for solving problems) The description of the scope of claims for utility model registration shall apply mutatis mutandis.

(effect) The description of the effect in the example applies mutatis mutandis.

(Embodiments of the invention) A dismantling block for mountain retaining shoring according to the present invention (hereinafter referred to as a dismantling block according to the present invention) will be described below according to an embodiment shown in the drawings.

Figure 1 shows a mountain retaining shoring using the demolition block of the present invention.
The sheet pile 1 is supported through the .

A demolition block 5 (see FIG. 2) is interposed on the strut 3 at its middle or end.

As shown in FIGS. 3 and 4, the demolition block 5 has a main body 6 of a concrete block with connecting bolts 9 protruding from each of a pair of opposing surfaces.

A blind or penetrating hole 7 is provided on at least one surface of the main body 6, and the illustrated hole 7 has four notches extending toward the corners of the main body 6 and has a substantially circular cross section.

Returning to FIG. 2, the dismantling block 5 is inserted into the strut 3 by being fixed to the end plate 4 provided at the middle or end face of the strut 3 by the connecting bolt 9 with a nut 10.

The method of using the demolition block of the present invention shown in the above embodiments will be described below.

In other words, the mountain retaining support is dismantled block 5 on strut 3.
It is assembled and used by interposing it.

Next, upon completion of use, the holes 7 of the dismantling block 5 are filled with a liquid expanding crushing agent 11 that generates a large expansion pressure when hardened, such as a lime-based silicate compound.

By leaving this state for a predetermined period of time, the liquid expanding crushing agent 11 hardens and expands in the hole 7, and due to the expansion pressure, a crack 12 is created in the main body 6 of the dismantling block 5, as shown in FIG. will be destroyed.

As a result, the large compressive force applied to the strut 3 is released, and the mountain retaining support can be dismantled extremely easily.

In the above embodiment, the hole 7 of the disassembly block 5
is one piece, but may be made of a plurality of pieces, and its cross-sectional shape, presence or absence of notches, etc. will be determined as appropriate.

(Effects of the invention) The embodiments of the dismantling block of the invention are as described above, and the effects thereof are listed below.

(1) The dismantling block for mountain retaining shoring according to the present invention has the structure described in the claims for utility model registration, and in particular, since a hole is provided on at least one side of the main body, the hole must be filled with an expanding crushing agent. The mountain retaining shoring is crushed and dismantled extremely easily and without vibration or noise.

(2) The dismantling block for mountain retaining shoring according to the present invention has the same structure as above, and in particular, because it is only crushed itself, the steel materials such as struts that make up the mountain retaining shoring are not damaged, and as a result, This method is extremely inexpensive compared to the previous method.

[Brief explanation of drawings]

Figure 1 is a perspective view of a mountain retaining support using the demolition block of the present invention, Figure 2 is an enlarged view of part A in Figure 1, and Figure 3 is an enlarged view of part A in Figure 1.
The figure is a perspective view of the demolition block of the present invention, FIG. 4 is a plan view of the same disassembly block, and FIG. 5 is a plan view of the same disassembly block in a crushed state. 1...Sheet pile, 2...Slapboard, 3...Strut beam, 4...
End plate, 5...disassembly block, 6...main body, 7...
Hole, 9... Connection bolt, 10... Nut, 11...
...Expansion crushing agent, 12...Crack.

Claims (1)

[Scope of utility model registration request] Consisting of a main body of a concrete block, a connecting bolt protruding from each of a pair of opposing faces of the main body and fixed to the middle or end of the strut, and a hole provided in at least one face of the main body. Dismantling block of mountain support.