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A kind of prestressed anchor cable and prestressed anchor cable one-time forming construction method

A technology of prestressed anchor cable and construction method, which is applied in the directions of earthwork drilling, installation of anchor rods, infrastructure engineering, etc., to save time, reduce construction steps, and avoid easy-to-collapse holes.

Active Publication Date: 2018-04-27
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies and defects of the prior art, the present invention provides a prestressed anchor cable and a one-time forming construction method of the prestressed anchor cable to solve the problems existing in the prestressed anchor cable construction method in the prior art

Method used

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  • A kind of prestressed anchor cable and prestressed anchor cable one-time forming construction method
  • A kind of prestressed anchor cable and prestressed anchor cable one-time forming construction method
  • A kind of prestressed anchor cable and prestressed anchor cable one-time forming construction method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to figure 1 with figure 2 As shown, the prestressed anchor cable of the present invention includes: an anchoring body 11 arranged inside the soil layer 10 . The anchor body 11 is formed by the cement slurry sprayed out by the rotary jet drilling machine. An anchor cable 20 is buried inside the anchor body 11 , and the tail of the anchor cable 20 protrudes from the soil layer 10 and is connected to the waist beam 12 on the surface of the soil layer 10 .

[0027] Such as figure 1 with image 3 As shown, the anchor cable 20 is sequentially divided into a tension section 21 , a free section 22 and an anchor section 23 from the tail to the front. The free section 22 and the anchor section 23 are buried inside the anchor body. The anchor cable 20 is a wire bundle composed of a plurality of steel strands 24 . In the inte...

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Abstract

The invention provides a pre-stressed anchor cable and a pre-stressed anchor cable one-time forming construction method. The method comprises the steps of: 1) providing an anchor cable and a rotary jet grouting drilling machine comprising a hollow drill stem provided with a drill bit at the front end; 2) installing the anchor cable in the hollow drill stem; 3) using the rotary jet grouting drilling machine to perform rotary jet grouting drilling in soil layers to form an anchor cable hole, the anchor cable entering the anchor cable hole along the hollow drill stem; 4) pulling the hollow drill stem out from the anchor cable hole after the drilling of the rotary jet grouting drilling machine reaches a target depth; 5) performing grouting in the anchor cable hole; 6) stretching and drawing and locking the anchor cable. The pre-stressed anchor cable one-time forming construction method enables the drilling, the anchor cable installing and the grouting to be performed simultaneously. The pre-stressed anchor cable one-time forming construction technology prevents the problem of hole collapse caused by anchor cable installation after drilling, and reduces construction steps and saves time.

Description

technical field [0001] The invention relates to an anchor cable and a construction method thereof, in particular to a prestressed anchor cable and a one-time forming construction method of the prestressed anchor cable. Background technique [0002] Anchor cable support plays an important role in the slope support process of foundation pit excavation because of its large anchoring radius, strong anchoring force, and wide reinforcement range. Anchor cable support is to install anchor cables in the surrounding rock to form an anchor body to strengthen the surrounding rock and improve the bearing capacity of the surrounding rock. Usually, the construction of anchor cables requires long-distance and ultra-long-distance support and drilling deep holes to install anchor cables. During the construction of anchor cable drilling, due to loose surrounding rock, broken, high stress and other reasons, it is easy to cause the hole to collapse after the drilling shutdown, which makes the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E21D21/00E21D20/02
Inventor 唐际宇刘军周唐阁威梁月利
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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