KR20090042212A

KR20090042212A - Slope reinforcement clutch seth anchoring systems and the construction method

Info

Publication number: KR20090042212A
Application number: KR1020090014503A
Authority: KR
Inventors: 윤정배; 윤홍기
Original assignee: 윤정배
Priority date: 2009-02-20
Filing date: 2009-02-20
Publication date: 2009-04-29

Abstract

The present invention relates to a system for reinforcing a slope (or retaining wall) generated by roads or other civil works, and more specifically, inserting a wedge-shaped anchor into a hole drilled in the slope and then tensioning a steel wire connected to the anchor. In the anchor system which expands the anchor to secure the inside of the hole and then fills the cement or grout with the inside of the hole, it is configured to have elasticity to expand the wedge blades of the wedge body, After the insertion is provided with a configuration that maintains the elastic force until pulling the strand, characterized in that to unfold the wedge blades of the wedge base body by removing the force suppressing the elasticity before the tensioning action.

Description

Slope reinforcement clutch seth anchoring systems and the construction method

The present invention relates to a clutch set anchoring system and a construction method for reinforcing a slope (or retaining wall) generated by roads or other civil works, and more specifically, by inserting a wedge-shaped anchor into a hole drilled in a slope. In an anchor system in which an anchor is extended to be secured inside a hole by tensioning a steel wire connected to the next anchor, and then cemented or grouted and solidified in the hole, an expansion is made to some extent before tensioning the wire to expand the anchor. It is to solve the disadvantage that the anchor comes out of the section in the tensioning process.

As is well known, the slope reinforcement method is performed as a stabilization method to reinforce slopes and retaining walls to suppress collapse or sliding. Civil slope work is performed according to the purpose of construction. It is divided into various types such as surface protection method, and among these, a representative method of increasing resistance is rock bolt, earth anchor, small nail, stepped retaining wall, and the like.

Among these, the earth anchor is used not only as ground reinforcement but also as a reinforcement for supporting a structure such as a building bridge.In detail, a wedge base body is formed at the tip of the tension member embedded in the ground by the injection of cement paste or grouting. An anchor is a state that is dynamically connected to the structure through the head of the wedge basic body, and the force applied to the tension member uses the principle that is transmitted to the base through the wedge basic body and grouting.

An example of a conventional configuration of such an earth anchor is disclosed in Korean Patent Publication No. 2008-112559 as in the example of FIG. Wedge body 200 is formed is connected by the connecting plate 301, the wedge body 200 is divided into several. In addition, the inclined head 100 is inserted into the wedge body 200 so as to open the wedge body 100 by being connected by the stranded wire 101 and pulling it.

Looking at the construction process and action of the conventional earth anchor having such a configuration, the inclined head 100 is inserted into the wedge body 200 to the inner end of the drilling hole in the state deeply inserted inside the wedge body 200, the insertion is When completed, pull the strand 101, the inclined head 100 is pulled out by pulling the strand to open the wedge body 200 by the wedge blade 201 is fixed to the inner wall of the drilling hole.

After the grouting in the drilling hole, the construction is completed by installing a protective cap at the end of the strand exposed to the outside of the drilling hole.

According to the conventional earth anchor construction, the wedge body of the wedge body does not fully extend during a certain period in the process of tensioning the stranded wire to open the wedge body, so that the wedge body is completely extended until the wedge body starts to be completely caught in the drilling hole. If the separation distance of the wedge body due to this tension is increased, it is not possible to make a full slope reinforcement, which may lead to collapse. And the cost is to have a significant increase.

The present invention devised in view of the above-described problem is that the wedge base body is inserted into the drilling hole and then the wedge base body is expanded in advance before pulling the tension wire so that the wedge blade is in close contact with the inner wall of the hole, so that the wedge base body is tensioned. It is intended to allow expansion to take place without moving.

The present invention for achieving the above object is configured to have the elasticity that the wedge blades of the wedge base body is to be unfolded, and after the wedge base body is inserted into the drill hole, such elastic force is maintained until pulling the strands, It is characterized in that the wedge blades of the wedge body are unfolded by removing the force that suppresses the elasticity before the tensioning action.

According to the present invention, the wedge blade is expanded and fixed in the drilled hole before the wedge base is tensioned in advance, so that the wedge base remains in place even when the wire is pulled and tensioned. Is always able to maintain accurate and strong reinforcement function, and it is not necessary to form a deeper drilling hole in advance in consideration of the wedge base body to reduce the air and reduce the construction cost.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an anchoring system, FIG. 2 is a main sectional view of the anchoring system, FIG. 3 is a first expanded state sectional view of the anchoring system, FIG. 4 is a tension sectional view of the anchoring system, FIG. 6 is a construction completion state diagram of the anchoring system.

The anchoring system according to the present invention has a plurality of wedge blades (11) on the outer circumference divided into two or more wedge base body 10, the guide 20 connected to the tip of the wedge base body (10), and the wedge base body (10) The inside of the strand is installed in a state in which the strand 35 is connected and has an inclined surface 31 is composed of an expansion head 30 that serves to open the wedge base body 10 while moving backward.

In particular, the anchoring system of the present invention to configure the connecting plate 25 for connecting the guide 20 and the wedge base body 10, so that the connecting plate 25 has an elasticity to open to the outside, more preferably Preferably, the connecting plate 25 is formed separately from the elastic plate 26 fixed to the guide 20 and the connecting plate 27 fixed to the wedge base body 10, and then combined to form the connecting plate 25. And, the elastic plate 26 is configured such that the side to which the connecting plate 26 is coupled to have a force to open in the circumferential direction from the center.

And at the rear end of the wedge base body 10, each of which protrudes in an arc shape to form a support part 12 which forms a circle when the whole is gathered. 15, the fixing ring 15 is connected to the wire 16 by pulling the wire 16 is to allow the fixing ring 15 to be separated from the support (12).

Look at the operation of the anchoring system of the present invention by the construction method.

The anchoring system according to the present invention starts by inserting the wedge base body 10 in which the guide hole 20 and the expansion head 30 are coupled to the inside of the drilling hole 1 formed on the slope as in a known construction method. , Insertion is made enough to the depth of the drill hole (1), and then first pull the wire (16).

As a result, the fixing ring 15 connected to the wire 16 is separated from the supporting part 12 at the rear end of the wedge basic body 10, and by this action, the wedge basic body 10 is opened, which is connected to the connection plate 25. A force acts to prevent the wedge base body 10 from being opened by collecting and holding the support 12 in a state in which a part of the elastic plate 26 is elastically coupled and held therein. By removing the 15), the wedge base body 10 is opened by the force of the elastic plate 26, and the wedge blades 11 of the wedge base body 10 are caught by the inner wall of the drilling hole 1 by this action.

After pulling the extension head 30 by pulling the strand 35, the inclined surface 31 of the extension head 30 is firmly fixed to the inner wall of the drilling hole 1 while further extending the wedge base body 10, When the operation occurs, the wedge base body 10 is caught in the inner wall of the drilling hole 1 to some extent by the above-described process, and thus the wedge base body 10 is expanded at the position where the wedge base body 10 is not attached. .

The process of tensioning the stranded wire 35 is performed by placing the support plate 38 at the inlet of the drilled hole 1 and rotating the finishing cap 36 at the rear end of the stranded wire 35 to reverse the tension head 37. 35) is pulled and thereby the wedge base 10 is extended as the extension head 30 runs out.

After complete fixing, the grouting operation is performed to fill the grout in the drilling hole 1 so that the anchoring system is completely fixed inside the drilling hole, thereby completing the construction.

According to the anchoring system and the construction method of the present invention,

Before the wedge basic body 10 is opened so that the wedge blade 11 can be completely engaged with the inner wall of the drilling hole 1, the wedge basic body 10 is expanded in advance by the elastic plate 26 to make the wedge blade 11 ) Is made to expand to some extent, so that even after pulling the strand (35) to complete tension, the wedge base body 10 will be expanded while maintaining its position without movement.

Accordingly, the construction of the slope reinforcement structure is to always have an accurate, uniform and powerful reinforcement function, and it is not necessary to form a deeper drilling hole in advance in consideration of the wedge base body coming out.

1 is a perspective view of an anchoring system according to the present invention;

2 is a cross-sectional view of main parts of the anchoring system according to the present invention.

Figure 3 is a cross-sectional view of the primary expansion of the anchoring system according to the present invention

Figure 4 is a tension cross-sectional view of the anchoring system according to the present invention

5 is an exploded perspective view of main parts of the anchoring system according to the present invention;

Figure 6 is a construction completion state diagram of the anchoring system according to the present invention

7 is a schematic diagram of a conventional anchoring system

*** Description of the symbols for the main parts of the drawings ***

1: drilling hole

10: base 11, wedge blade

12: support

15: retaining ring 16: wire

20: Information

25: connecting plate 26: elastic plate

27: connecting plate

30: expansion head 31: slope

35: stranded line 36: closing cap

37: tension head

Claims

Wedge main body 10 having a plurality of wedge blades 11 on the outer circumference and divided into two or more, a guide 20 connected to the tip of the wedge main body 10, and the strands 35 inside the wedge main body 10 In the anchoring system consisting of an expansion head (30) which is installed in a state connected to and has a role of opening the wedge base body (10) while moving backward with the inclined surface (31),

In configuring the connecting plate 25 for connecting the guide 20 and the wedge base body 10, the connecting plate 25 to have an elastic to open to the outside and

At the rear end of the wedge basic body 10, each protrudes in an arc shape to form a support part 12 that forms a circle when the whole is gathered,

Wraps the entire support 12 to form a fixing ring 15 to prevent the wedge base body 10 from opening,

Slope reinforcement clutch set anchoring system, characterized in that the fixing ring 15 is connected to the wire 16 to pull the wire 16 so that the fixing ring 15 can be separated from the support 12.

The method of claim 1,

The connecting plate 25 is formed separately from the connecting plate 27 fixed to the elastic plate 26 and the wedge base body 10 fixed to the guide 20 to combine to form a connecting plate 25, Resilient plate 26 is a clutch set anchoring system for slope reinforcement, characterized in that the side to which the connecting plate 26 is configured to have a force to open in the circumferential direction from the center.

After inserting the wedge base body 10 in a state where the guide hole 20 and the expansion head 30 are coupled to the inside of the drilling hole 1 formed on the slope as in a known construction method,

First, the wedge base 10 is opened by pulling the wire 16 so that the fixing ring 15 connected to the wire 16 is separated from the support 12 at the rear end of the wedge base 10.

This causes the force to act so that the wedge base body 10 does not open by holding and holding the support portion 12 while engaging the elastic plate 26 which is a part of the connecting plate 25 to have elasticity to open.

By removing the fixing ring 15, the wedge base body 10 is opened by the force of the elastic plate 26, and the wedge blades 11 of the wedge base body 10 are caught by the inner wall of the drilling hole 1,

Then, when the extension line 30 is pulled by pulling the strand 35, the inclined surface 31 of the extension head 30 is firmly fixed to the inner wall of the drilling hole 1 while further extending the wedge base body 10. Slope reinforcement clutch set anchoring construction method.