JPS6051225A - Sheathing work of concrete wall - Google Patents

Abstract

PURPOSE:To perform sheathing work without causing the deformation of sheathing walls and also of the ground's surface by a method in which an anchor-introducing hole is formed in the sheathing wall by inclining it toward the opposite side of the excavation side and an anchor is inserted into the hole. CONSTITUTION:A pipe 3 for forming an anchor-introducing hole is set in place in a concrete sheathing wall 2 by inclining it downwardly at a given angle in the opposite side of the excavation side, and two concrete sheathing walls are erected to slightly deeper depth than the position of excavation. An anchor 4 is inserted into the hole 3 and penetrated into the substratum 1, the anchor 4 is fixed to the upside of the sheathing walls 2, and the ground 1 on the opposite side is excavated to the position to be excavated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earth retaining method in which, prior to root cutting in earth retaining work, an anchor is inserted and installed in an anchor introduction hole provided in a concrete earth retaining wall, and then root cutting is performed.

Conventionally, concrete earth retaining walls in earth retaining works have been stabilized by installing struts or earth retaining anchors. However, 1.The current situation is that when installing struts or retaining anchors, the roots are cut to a position where the struts or anchors can be installed, and then the struts or anchors are installed to stabilize the retaining wall. .

In this case, there is a drawback that the soil shoals act on the concrete earth retaining wall due to root cutting, and the concrete earth retaining wall deforms until the struts or anchors are installed, resulting in large deformation of the ground surface.

This invention solves the above-mentioned drawbacks and prevents deformation of the earth retaining wall and ground surface by providing holes for introducing earth retaining anchors in the concrete earth retaining wall and inserting and installing the earth retaining anchors before root cutting. This provides a construction method for carrying out earth retaining works.

Next, embodiments of the present invention will be described based on the drawings. Fig. 1 is a plan view of the concrete earth retaining wall of the present invention;
Figures 1 to 3 show the insertion of an anchor into a concrete earth retaining wall.
This shows the construction order for installation. In the figure, a vibrator 3, which serves as an anchor introduction hole, is placed in a predetermined position inside the concrete earth retaining wall and is tilted downward at a predetermined angle in the direction opposite to the side where the roots are to be cut. Erect the anchor to a depth from the cutting position. Next, insert the anchor into the anchor introduction hole 3, press it into the ground, fix the anchor on the upper surface of the earth retaining wall λ using the fixing fitting!, and then Excavate l to the planned root cutting position.

As mentioned above, the present invention is capable of reducing deformation of the earth retaining wall and the ground surface by stabilizing the earth retaining wall by installing the concrete earth retaining wall in the ground with anchors after earth retaining and before root cutting, and making it possible to continue root cutting work. This makes it possible to carry out construction work and improve excavation efficiency.

[Brief explanation of drawings]

FIG. 1 is a plan view of the present invention, and FIGS. /: Ground 2: Concrete retaining wall 3: Anchor introduction hole: Anchor left: Anchoring fitting

Claims (1)

[Claims] After installing a concrete earth retaining wall with holes for introducing anchors in advance into the ground a little deeper than the planned root cutting position, a plurality of earth retaining anchors are installed in the concrete earth retaining wall at predetermined intervals from the ground surface prior to root cutting. An earth retaining method for a concrete wall, which is characterized by inserting and installing the concrete wall into an introduction hole and then cutting the concrete wall, leaving the concrete earth retaining wall.