JPH0455089Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a structural material for inserting the horizontal pile of a main pile used in the main pile horizontal pile construction method, which is one of the pile retaining methods in civil engineering and construction work.

[Conventional technology]

Generally, in the main pile horizontal pile construction method, as shown in Fig. 5, H steel main piles 2 are embedded in soil pillars 1, and horizontal sheet piles 3 are inserted between adjacent main piles 2 to prevent the excavated soil from collapsing. It is something.

In the main pile horizontal sheet pile construction method described above, in order to insert the end of the horizontal sheet pile 3 into the back side of the main pile 2, a gap must be formed between the back surface of the main pile 2 and the soil column 1.

Conventionally, as a means for forming the above-mentioned voids, as shown in FIG. After that, during excavation work, a part of the soil column 1 is scraped off to remove the Styrofoam 4, and the end of the horizontal sheet pile 3 is inserted into the gap formed on the back side of the main column 2. As shown in Figure 5, the voids on the back side of the horizontal sheet piles 3 are filled with mortar 5 or soil.

In addition, as another example of the void forming means, as shown in FIG. 6, a square pipe 6 is fixed to the back surface of the parent pile 2, and the parent pile 2 is built inside the soil pillar 1, and when the soil is in a semi-hardened state, , it has been proposed to draw out the square pipe 6 to form a void.

[The problem that the idea aims to solve]

By the way, the former method using styrofoam has problems in that it takes time to remove and the removed styrofoam becomes industrial waste and must be disposed of off-site.

Further, when a square pipe is used, there is a problem in that it is difficult and time-consuming to attach and pull out the square pipe, and mechanical equipment is required for pulling it out.

The object of this invention is to provide a structural material for a horizontal sheet pile layer on a parent pile that allows the formation of a void on the back surface of the parent pile easily and efficiently, and that does not generate waste.

[Means to solve the problem]

In order to solve the above-mentioned problems, this invention forms three sides of a rectangular cylinder closed at both ends with hard walls, the remaining one side is formed with a cuttable wall, and the hard wall adjacent to this cuttable wall is The structure is such that an adhesive layer is provided on the outer surface for attachment to the main pile.

[Function] A rectangular cylinder is fixed to the back of the parent pile with an adhesive layer, this parent pile is built into a soil column, and after the soil has solidified, a part of the soil column is removed during excavation to make the rectangular cylinder. Expose the cut wall, make a cut line in the longitudinal direction on this cuttable wall with a cutter knife, and insert the end of the horizontal sheet pile into the rectangular cylinder so as to push open the cuttable wall at the cut line to open the space inside the rectangular cylinder. By filling the holes with mortar or soil, horizontal sheet piles can be placed between the main piles.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

As shown in FIG. 1, the structural material 11 for forming the cavity is a rectangular cylinder 12 with both ends closed, with hard walls 13, 14, and 15 on three sides, and a cuttable wall 16 on the remaining side. , the adhesive layer 17 is provided on the outer surface of the hard wall 15 adjacent to the cuttable wall 16.

In the illustrated case, the square tube body 12 includes a hard half tube body 18 formed with a U-shaped cross section using a hard synthetic resin such as vinyl chloride or an iron plate, and a hard half tube body 18 made of a soft synthetic resin such as polyethylene. A soft semi-cylindrical body 19 having a U-shaped cross section that fits inside the body 18 is combined so that the inside is hollow, and hard walls 13, 14, 15 are formed on three sides of the hard semi-cylindrical body 18, and the soft semi-cylindrical body 19 is formed into a hollow shape. A cuttable wall 16 is formed on one side of the cylindrical body 19, and both ends are closed with lids 20.

Note that the adhesive layer 17 is formed using a double-sided adhesive tape protected with release paper.

The structural material of this invention has the above structure,
The following describes how to use it.

An adhesive layer 17 is attached to the rectangular cylinder 12 along the longitudinal direction of the back side of the flange of the main pile 2 such as H steel or rail.
and then erect this parent pile 2 into the soil pillar 1 or cement milk pillar.

After the soil column 1 has solidified, a part of the soil column is scraped off during excavation to expose the cuttable wall 16 of the rectangular cylinder 12, as shown on the right side of FIG. 3.

In this state, a cut line 21 is inserted along the longitudinal direction of the cuttable wall 16 with a cutter knife, and the end of the horizontal sheet pile 3 is pushed into the rectangular tube body 12 from the cut line 21.

When the horizontal sheet pile 3 is pushed in, both sides of the cuttable wall 16 are bent inward from the part where the cut line 21 is inserted, allowing the horizontal sheet pile 3 to be inserted into the rectangular tube body 12.

After inserting the horizontal sheet piles 3, as shown on the left side of FIG. If the excavated soil is filled with soil or mortar, the horizontal piles 3 can prevent the excavated soil from collapsing, as shown in FIG.

〔effect〕

As described above, according to this invention, three sides of the rectangular cylinder are made of hard walls, the remaining one side is made into a cuttable wall, and an adhesive layer is provided on the outer surface of the hard wall adjacent to the cuttable wall. After fixing it to the back of the main pile and building it inside the soil column, if you make a cut line on the cuttable wall with a cutter knife, the end of the horizontal sheet pile can be inserted into the square tube, and the end of the horizontal sheet pile can be inserted into the square tube. A gap for inserting the horizontal sheet pile can be formed by fixing the rectangular cylinder, and the gap can be easily formed.

In addition, the void can be formed without removing the rectangular cylinder, improving work efficiency and eliminating the generation of waste.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the structural material according to this invention, Figure 2
The figure is a cross-sectional plan view showing the above in use, Figure 3 is an enlarged cross-sectional plan view of the main parts of the same, Figure 4 is a cross-sectional plan view showing the conventional structural material in use, and Figure 5 is the same as above. Fig. 6 is a cross-sectional view of another example of the conventional structural material in use. 1... Soil pillar, 2... Main pile, 3... Horizontal sheet pile,
11... Structural material, 12... Rectangular cylinder, 13, 14,
15... Hard wall, 16... Cuttable wall, 17... Adhesive layer.

Claims (1)

[Scope of utility model registration request] Three sides of a rectangular cylinder with both ends closed are formed by hard walls, the remaining one side is formed by a cuttable wall, and an adhesive layer is provided on the outer surface of the hard wall adjacent to the cuttable wall for attachment to the parent pile. Structural material for inserting horizontal sheet piles into main piles.