JPH0738370Y2 - Concrete sheet pile joint device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a joint device for concrete sheet piles.

[Prior art]

When placing a sheet pile in the ground for earth retaining, etc., if there is a gap between the sheet piles, it may not be able to support the earth and sand completely,
In addition, the load may collect on one sheet pile and the sheet wall may collapse.

For this reason, in order to improve the connection of the sheet piles, a hook-shaped joint portion is provided in the steel sheet pile, and the joint portions of the adjacent sheet piles are hooked and connected.

Since it is difficult to form a hook-shaped joint with concrete sheet piles, a convex projection is formed on the end surface of one concrete sheet pile and a concave groove is formed on the end surface of the other concrete sheet pile.

[Problems to be solved by the present invention] However, in the case of a joint device that merely fits the above-mentioned projection into the groove, the connection between the two is insufficient, and the connection between the two is disconnected due to earth pressure. Resulting in. In addition, if the projections and grooves are small when driving the subsequent concrete sheet pile, it will not serve as a guide and accurate placement will not be possible.

The present invention has been made to solve the above problems, and provides a jointing device for concrete sheet piles, which does not easily come off the connection and can also serve as a guide when placing the following concrete sheet piles. The purpose is to do.

[Means for Solving the Problems]

The concrete sheet pile joint device according to the present invention has flat walls on both sides in the width direction and projecting walls in the center, and these two walls are connected to each other by a side wall intersecting with both walls at an obtuse angle. In the concrete sheet pile, the end surface of the flat wall on one side of the sheet pile is the abutting surface, and the length is about half the length of the flat wall having the same thickness as the flat wall projecting from the abutting surface to form the abutting surface. Is integrally formed on the back surface of the flat wall, and a corner-shaped fitting portion consisting of two surfaces, the abutting surface and the abutting surface, is provided, and concrete is placed adjacent to the fitting portion. This is a structure in which concrete sheet piles arranged side by side are connected by abutting two surfaces of one end portion of the sheet pile.

〔Example〕

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the figure, A is a concrete sheet pile according to the present invention, which has flat walls 1 and 1 forming both sides in the width direction thereof.
And a protruding portion B forming the central portion thereof.

The projecting portion B is composed of side walls 3 and 3 that intersect the flat walls 1 and 1 at an obtuse angle from opposite end surfaces of the flat walls 1 and 1 on both sides in the width direction, and a projecting wall 2 that connects the side walls 3 and 3. Has been done. The flat walls 1, 1 and the protruding wall 2 are parallel.

The end face of the flat wall 1 on either side of the width direction of the concrete sheet pile A is an abutting surface 6 facing the subsequent concrete sheet pile A, and a flat surface projecting from the abutting surface to form an abutting surface 5. A guide piece 7 having substantially the same thickness as the wall 1 and having a length that is approximately half the length of the flat wall is integrally formed on the back surface of the flat wall 1, and the abutting surface 6 and the contact surface 5 are formed.
And an angled fitting portion composed of and.

The operation of placing the concrete sheet pile A as described above into the ground will be described.

The sheet pile A is placed by a placing device, and the sheet pile A is placed next to the existing sheet pile A. At this time, the existing sheet pile A
The two faces of the one end of the sheet pile A which is being driven are brought into contact with the angled fitting part 4 and the driving is performed along the fitting part 4. That is, since the two surfaces of the fitting portion 4 are used as guides for driving, the sheet pile A can be accurately driven.

As described above, the two faces of the fitting portion 4 of the sheet pile A are adjacent to each other.
When they come into contact with the end portions of the sheet piles, even if earth pressure is applied, the end portions are overlapped with each other face to face, and no gap is created between the sheet piles A and A. Further, the connection between the sheet piles A and A is not easily disconnected.

[Effect of device]

The present invention has the above-described structure, and the two surfaces of the end portions of the adjacent sheet piles are brought into contact with the two surfaces of the angled fitting portion formed by the guide piece having the same thickness as the flat wall. As a guide when placing sheet piles, it can be placed accurately.

Further, the joint portions do not easily come off the joints of both sheet piles due to the surfaces overlapping with each other, and no gap is created.

[Brief description of drawings]

FIG. 1 is a perspective view of a state where concrete sheet piles are cast, and FIG. 2 is a plan view thereof. A ... Concrete sheet pile, B ... Projection part 1 ... Flat wall, 2 ... Projection wall, 3 ... Side wall, 4 ... Fitting part,
5 ... abutting surface, 6 ... abutting surface, 7 ... guide piece.

Claims (1)

[Scope of utility model registration request] 1. A concrete sheet pile having flat walls on both sides in the width direction and projecting walls in the central portion, and connecting both of these walls with side walls intersecting both walls at an obtuse angle. The end surface of the flat wall on one side is the abutting surface,
A guide piece that is approximately half the length of the flat wall that has the same thickness as the flat wall that projects from the abutment surface and forms the abutment surface is integrally formed on the back surface of the flat wall and abuts the abutment surface. Providing an angled fitting part consisting of two surfaces
A jointing device for concrete sheet piles, characterized in that two sides of one end of a concrete sheet pile placed adjacent to the fitting portion are brought into contact with each other to join the concrete sheet piles arranged side by side.