JPH0327063Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a guide sheet pile for driving concrete sheet piles into the position where they are to be erected and for erecting the concrete sheet piles in the place where the concrete sheet piles are to be erected.

Problems that the invention aims to solve Concrete sheet piles are used to construct earth retaining walls, underground walls, etc. using impact force, vibration force, static load, etc. However, due to the impact during driving, especially when driving into hard ground. , and was easily damaged. As a way to solve this problem, steel guide sheet piles are driven in advance at the locations where concrete sheet piles should be erected, and then pulled out.
There is a way to erect concrete sheet piles at the site of the extraction.

The purpose of this invention is to propose a guide sheet pile for concrete sheet pile erection that can control the driving direction and driving position with high precision.

Means for Solving Problems, Embodiments This invention will be explained below with reference to guide sheets of embodiments illustrated.

In FIGS. 1 and 2, rectangular stabilizing plates 2, 2 are attached to both surfaces of a guide sheet pile 1 made of steel plates near the lower end. This stabilizing plate 2 has a side toward the lower end of the sheet pile oriented in the width direction of the sheet pile, and is pivoted to the sheet pile. Inside the sheet pile 1, two horizontal hydraulic jacks 3, 3 are arranged at the rear of the stabilizers 2, 2 and extend in the direction of the stabilizers. It is attached to the back. Stabilizer plate 2,
2 is the piston rod 4 centered on the lower side where it is pivoted.
In response to the expansion and contraction of the sheet pile, the angles θ and θ' that open toward the top of the sheet pile with the surface of the sheet pile can be adjusted freely. In addition, when the rod 4 is fully retracted, the stabilizer plate 2 comes into contact with the seat 5 attached to the opening on the back surface of the stabilizer plate 2 and becomes flush with the sheet pile surface.

The opening angle of the stabilizer plate can be adjusted by means such as a hydraulic jack or a combination mechanism of a rotating rod and a screw.

Function/Effect This guide sheet pile has the above structure, and when driving into the ground, the opening angles of the stabilizing plates on both surfaces can be adjusted at any time, and the driving direction and driving position can be controlled. Therefore, the accuracy of driving the guide sheet piles is improved, and the accuracy of driving the concrete sheet piles to be erected in the area where the guide sheet piles have been pulled out can be improved.

Example Hereinafter, an example of construction in which concrete sheet piles are erected to form a continuous wall using this guide sheet pile will be described.

In Figures 3, 4, 5, and 6, a plurality of concrete sheet piles 7 are driven into the hard ground 6, and the joint recesses 8 and joint protrusions 9 on the side end surfaces are in contact with each other, and they are connected in a straight line. be. Two guide sheet piles 1-1 and 1-2 are driven into the positions of the two concrete sheet piles to be erected continuously in contact with the existing sheet piles 7. The guide sheet pile 1 has the same outer dimensions as the concrete sheet pile 7, passes through it in the vertical direction, and has a water jet pipe 10. When driving, vibration by a vibron hammer and a water jet were used in combination, and the opening angles of the stabilizing plates 2, 2 on both surfaces were adjusted to control the driving direction and position. Of these two guide sheet piles 1-1 and 1-2, one guide sheet pile 1-1 is placed in contact with the existing concrete 7.
was pulled upward, and a new concrete sheet pile 7' was driven into the area where the concrete sheet pile had been pulled out. The new concrete sheet pile 7' has its both end surfaces connected to the existing concrete sheet pile 7 and the guide sheet pile 1- which has been placed in advance.
It is in contact with the joint concave portion 8 and convex portion 9 of No. 2, and can be built with high accuracy and low pressing force.

The guide sheet pile 1-1 that was pulled out earlier is placed in the position where the next concrete sheet pile should be erected in succession.
It is driven in contact with the guide sheet pile 1-2 that has already been driven. Thereafter, the guide sheet pile 1-2 in contact with the previously driven sheet pile 7' is pulled out and a new concrete sheet pile is driven in its place, and this process is repeated to connect the concrete sheet piles to construct a continuous wall.

[Brief explanation of the drawing]

Figures 1 and 2 are a front view and a partially sectional side view of the guide sheet pile according to this invention, Figures 3 and 4 are a longitudinal sectional view and a plan view of the two guide sheet piles driven in, and Figure 5 , Figure 6 is a longitudinal sectional view and a plan view of concrete sheet piles being erected on the site where the guide sheet piles have been pulled out. 1... Guide sheet pile, 2... Stable plate, 3... Hydraulic jack, 4... Piston rod, 5... Strike seat, 6
...Ground, 7,7'...Concrete sheet pile, 8...
...Joint recess, 9...Joint protrusion, 10...Water jet pipe.

Claims (1)

[Scope of utility model registration request] Driving concrete sheet piles at the desired locations,
This guide sheet pile is pulled out and a concrete sheet pile is erected in the place where it was pulled out. Stabilizer plates are attached to both surfaces of the guide sheet pile near the lower end, and the sides of the stabilizer plate towards the bottom end of the sheet pile are oriented in the width direction of the sheet pile. A guide sheet pile for sheet pile erection, characterized in that the guide sheet pile is attached to a shaft, and the angle of opening toward the top end of the sheet pile with respect to the surface of the sheet pile can be freely adjusted around the shaft attachment line.