CN1081220A

CN1081220A - The anchorage method of earth anchor

Info

Publication number: CN1081220A
Application number: CN93108098A
Authority: CN
Inventors: 尾高英雄
Original assignee: Kurosawa Construction Co Ltd
Current assignee: Kurosawa Construction Co Ltd
Priority date: 1992-07-03
Filing date: 1993-07-02
Publication date: 1994-01-26
Anticipated expiration: 2013-07-02
Also published as: CN1071830C; KR0132205B1; JPH0626039A; JP2539319B2; KR940002433A

Abstract

The present invention is the fixing means (method of an-choring) of relevant dispersed compression type earth anchor (compression dis-perse type earth anchor).

The objective of the invention is in the fixing means of dispersed compression type earth anchor the gap of the shearing resistance in the leading section of each grappling body of doubtful releasing anchor body and the scope of rearward end.

Feature of the present invention is: by each the grappling body 6 that is set up with different depth in anchor body 4, to draw material 5a, 5b, 5c around fastening into U font revolution shape with a bolt or latch, and make the diameter of this traction material 5a, 5b, 5c, from the grappling body 6a in deep to grappling body 6b, the 6c of side on hand, each forms different diameters, and each comes to be fixed (grappling) after the tensioning (tension) with different pulling force.

Description

The anchorage method of earth anchor

The present invention is fixing (grappling) method about the dispersed compression type earth anchor.

To draw material in prior art makes behind the U font revolution shape around being latched on the grappling body (fixed body), again this grappling body is equipped on the anchor body in the anchor hole with different depth position, and with the end of the aforementioned traction material fixing means of the compression unit somatotype earth anchor of tensioning (tension) grappling in addition outside the opening of anchor hole, known to general.

The fixing means of this kind dispersed compression type earth anchor, still as shown in Figure 7, each grappling body 20 will be around the traction material 30 of fastening with a bolt or latch in this grappling body 20 by decentralized configuration, all make its tensioning, so the advantageous feature of equalization slightly of the shearing resistance with solid anchor body 40 with same pulling force.

The shearing resistance of the anchor body of the fixing means of this kind dispersed compression type earth anchor, with the anchor body all, though equalization slightly, but with each of grappling body, then as shown in Figure 7, to the shearing resistance between the rearward end, delicate difference takes place respectively but at the leading section of each grappling body; This is to make in the scope of each grappling body, that is the shearing resistance of the leading section of the grappling body of the shearing resistance of the grappling body rearward end in deep and pars intermedia, and between the shearing resistance of the grappling body leading section of the shearing resistance of the grappling body rearward end of pars intermedia and superficial part, great gap takes place.

The gap of this kind shearing resistance is to produce because of the leading section of each grappling body is different with the amount of movement of rearward end; Thus, will take place: working tension in the scope of the leading section of each grappling body and rearward end makes the anchor body that problems such as be full of cracks take place.

The objective of the invention is to propose the fixing means of dispersed compression type earth anchor for addressing the above problem.Quasi-solution is removed leading section and the rearward end that occurs in each grappling body, that is the shearing resistance of the leading section of the grappling body of the shearing resistance of the grappling body rearward end in deep and pars intermedia, and the difference of the shearing resistance between the shearing resistance of the grappling body leading section of the shearing resistance of the grappling body rearward end of pars intermedia and superficial part.

For the main idea of the present invention that addresses the above problem be for: in the anchor body in the anchor hole that lockhole became in ground, be equipped with the grappling body of several different depth position, also have the traction material to turn round shape around fastening with a bolt or latch on it with the U font at this each grappling body, its end then is tensioned outside aforementioned anchor hole opening and is fixed in the earth anchor:

It is characterized by: will respectively be drawn material around what fasten into U font revolution shape with a bolt or latch at aforementioned each grappling body, with in addition tensioning (tension) the back grappling of variant pulling force; And will be from the grappling body in aforementioned deep around door bolt to the diameter of the traction material of the grappling body of side on hand, respectively be set at different diameters.

So, as above-mentioned, will be at each grappling body by around the traction material of fastening into U font revolution shape with a bolt or latch, come in addition tensioning with variant pulling force; Thus, can remove in the scope of the leading section that occurs in each grappling body and rearward end, that is, the shearing resistance of the shearing resistance of the grappling body rearward end in deep and the grappling body leading section of pars intermedia, and the gap of the shearing resistance between the shearing resistance of the grappling body leading section of the shearing resistance of the grappling body rearward end of pars intermedia and superficial part, so can prevent the generation of anchor body be full of cracks.

Below, describe the embodiment of the fixing means of dispersed compression type earth anchor of the present invention in detail with reference to accompanying drawing.

The present invention is further elaborated with reference to the accompanying drawings:

Fig. 1 represents the profile of the earth anchor of fixing means of the present invention.

Fig. 2 becomes the oblique view of the earth anchor of U font revolution shape around door bolt traction material at the grappling body.

Fig. 3 will draw the profile of material around the grappling body of fastening into U font revolution shape with a bolt or latch.

Fig. 4 door bolt ends the plan view of metalwork.

Fig. 5 door bolt ends the side view of metalwork.

The plan view of Fig. 6 pressure-bearing metal spare.

The profile of the fixing means of Fig. 7 earth anchor in the past.

1 is for boring the anchor hole of pick in ground among the figure, and 2 for preventing landslide plate Chinese toon, and 3 are the traction pedestal, and 4 for injecting the anchor bodies of curing behind the cement emulsion slurry (cement milk).

In this anchor hole 1, also there are different three tractions of

diameter material

5a, 5b, 5c to be folded back, are fixed on the traction material with pedestal 3 and there is 6 derivation end to be tensioned, so that support anti-landslide with plate Chinese toon 3 in inside.

This respectively draws

material

5a, 5b, 5c, in wrap (sheath) 5d of synthetic resin type, has steel wire 5e to insert via quilts such as butter and wears to become to slide freely the what is called of the state wirerope (unburned cable) that do not burn; Each draws

material

5a, 5b, 5c and is also become U font revolution shape around 3 the grappling

body

6a, 6b, the 6c that fasten with a bolt or latch in being provided in different depth in the anchor body 4, and between each grappling

body

6a, 6b, 6c, the arrangement of reinforcement as the reinforcing bar 8 of reinforcing body 7 is also arranged.

The diameter of this

traction material

5a, 5b, 5c, deep is to be 15.2mm, and pars intermedia is 12.7mm, and superficial part then is 12.7mm.

And aforementioned reinforcing bar 8 its ends also join with each grappling

body

6a, 6b, the 6c of adjacency, and by the suitable sept 8a that is equipped with at interval.Therefore, anchor body 4 is to become high persons of rigidity on all by grappling

body

6a, 6b, 6c and reinforcing bar 8.

Grappling body

6a, 6b, 6c are as shown in Figure 3, and the door bolt that is formed the U word shape by the chase 9a around door

bolt traction material

5a, 5b, 5c ends metalwork 9, reach hookup cylindraceous (coupler) etc. and constitute.

And, distolateral after door bolt ends metalwork 9, also, be formed with flange as Fig. 4 and shown in Figure 5; There is the road ditch 11a that angles door bolt to draw

material

5a, 5b, 5c to form radial configuration and concave indentation shape 11 of this flanges.This guide channel 11a also forms the traction material 5a of same anchor hole 1, the above number of derivation number of 5b, 5c at least, then is 8 at present embodiment.

And, be based in door bolt and end the metalwork 9 projection 9b of end face afterwards, the also chimeric front end that hookup 10 is arranged; , and fixed then along being provided with by around being latched in

traction material

5a, 5b, the 5c that ends metalwork 9 in the periphery of this hookup 10 with wire 12.

And in the rear end of hookup 10, also chimeric have a pressure-bearing metal spare as shown in Figure 6 13; There is the guide channel 11a that ends metalwork 9 with aforementioned door bolt form radial and concave indentation 13 of this pressure-bearing metal spares, and has

traction material

5a, 5b, 5c to insert wherein with the guide channel 13a of number.

During fixing (grappling) this kind earth anchor, be as shown in Figure 1, the traction material 5a of variant diameter, 5b, 5c around the grappling

body

6a, 6b, the 6c that fasten into U font revolution shape with a bolt or latch, are equipped on different depth locations at anchor hole 1.

Secondly, this anchor hole 1 in, inject cement emulsion slurry, treat that sclerosis forms anchor body 4 after, from around fastening with a bolt or latch, in turn with the in addition tensioning (tension) of different pulling force in the grappling body 6a of the extremely superficial part of traction material 5a of the grappling body 6a in deep.

This pulling force is to be configured in advance: the boundary portion of each grappling

body

6a, 6b, 6c, that is the shearing resistance of the grappling body 6b leading section of the shearing resistance of the grappling body 6a rearward end in deep and pars intermedia, and the shearing resistance of the shearing resistance of the grappling body 6b rearward end of pars intermedia and the grappling body 6c leading section of superficial part etc. respectively becomes same value, and the shearing resistance of anchor body 4 integral body can be evenly; And be 21tf with the pulling force of the grappling body 6a in deep, the pulling force of the grappling body 6b of pars intermedia is 18tf, the pulling force of the grappling body 6c of superficial part is 15tf, comes each in addition tensioning grappling (fixing).

Then, as above-mentioned, between the grappling body 6c from the grappling body 6a in deep to superficial part, come in addition tensioning grappling with the corresponding pulling force of diameter with each

traction material

5a, 5b, 5c; Thus, can be as shown in Figure 1, remove the gap of the shearing resistance in the scope of each grappling

body

6a, 6b, 6c, eliminate the difference of the shearing resistance in grappling body 4 total lengths, and make in addition serialization of integral body.

It is identical that the 2nd embodiment then makes and respectively draws

material

5a, 5b, 5c becomes diameter, and come tensioning in addition with variant pulling force; With aforementioned same, between the grappling body 6c from the grappling body 6a in deep to superficial part, the pulling force that diminishes with order comes in addition tensioning.

In the case, be 18ft with the pulling force of the grappling body 6a in deep, the pulling force of pars intermedia 6b is 15ft, the pulling force of the grappling body 6c of superficial part is that 12ft comes tensioning; Thus, can be as described above, separate the gap of the shearing resistance in the scope of disappear each grappling

body

6a, 6b, 6c, eliminate the difference of the shearing resistance of anchor body 4 total lengths, make in addition serialization of integral body.

In addition, at present embodiment, Figure 1 and Figure 2 is to be set at 3 with

grappling body

6a, 6b, 6c as the aforementioned; Only this also needn't be defined in 3 certainly, can correspondingly with pulling force select its number arbitrarily.

In addition, at present embodiment also with pulling force from around fastening with a bolt or latch in the traction material 5a of the grappling body 6a in deep to around fastening with a bolt or latch in the traction material 5c of the grappling body 6c of superficial part, diminished in turn; Have only can be on the contrary from around fastening with a bolt or latch in the traction material 5a of the grappling body 6a in deep to around fastening with a bolt or latch in the traction material 5c of the grappling body 6c of superficial part, is become in turn greatly, come in addition tensioning grappling (fixing), also be feasible.

Because of each grappling body that will set with different depth is respectively drawn material around what fasten into U font revolution shape with a bolt or latch, come in addition tensioning grappling with variant pulling force in the anchor body; Can separate the gap of the shearing resistance in the scope of each grappling body of the anchor body that disappears thus, so can prevent anchor body generation crack performance.

Also because of the difference of the shearing resistance that can eliminate anchor body 4 total lengths, with integral body serialization in addition; So can improve the reliability of the grappling (tightness) of earth anchor.

The explanation of numbering in the accompanying drawing

1 ... retouch the hole, 2 ... prevent the landslide plate Chinese toon of using,

3 ... traction material pedestal, 4 ... the anchor body,

5a, 5b, 5c ... the traction material,

6a, 6b, 6c ... grappling body (fixed body).

Claims

1, a kind of fixing means of earth anchor, wherein: in the anchor body in the anchor hole that become of in ground, holing, be equipped with the grappling body of several different depth position, also there is the traction material to turn round shape around fastening with a bolt or latch on it at this each grappling body with the U font, its end then is tensioned outside the opening of aforementioned anchor hole in the fixing means of (tension) the fixing earth anchor that is become: it is characterized by: will respectively be drawn material around what fasten into U font revolution shape with a bolt or latch at aforementioned each grappling body, with in addition tensioning (tension) the back grappling (fixing) of variant pulling force.

2, in the fixing means of earth anchor as claimed in claim 1; Will around fasten with a bolt or latch in from the grappling body in aforementioned deep to the diameter of the traction material of the grappling body of side on hand, so be decided to be variant diameter.