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Method for efficiently recycling anchor bars

An anchor bar and high-efficiency technology, applied in construction, sheet pile walls, foundation structure engineering, etc., can solve the problems of low anchor bar recovery rate, large support deformation, low anchor force, etc., shorten the construction period, reduce project cost, Effect of Recycling Cost Reduction

Active Publication Date: 2014-03-26
SHANGHAI STRONG FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To overcome the shortcomings of low anchor bar recovery rate, high cost, large support deformation, and low anchor force in the current foundation pit support, and provide a method that can efficiently recover underground anchor bars

Method used

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  • Method for efficiently recycling anchor bars
  • Method for efficiently recycling anchor bars
  • Method for efficiently recycling anchor bars

Examples

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Embodiment Construction

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] see figure 1 and Figure 4 , the anchor body for foundation pit support is formed by the following method:

[0031] Step 1: form a jet-jet stirring pile body 200 by the jet-jet mixing method;

[0032] The second step: install the anchor bar 1 on the anchor piece 2;

[0033] The third step: use the rotary grouting drill pipe to hang the anchor piece 2, bring the anchor piece 2 and the anchor bar 1 into the rotary grouting mixing pile body, and spray cement slurry or add a reinforcing agent at the same time.

[0034] Step 4: Connect the anchor bar 2 and the crown beam 3 or the waist beam 4 through tensioning and locking with the anchor.

[0035] see in Figure 4 According to the present invention, the anchor bod...

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Abstract

The invention provides an anchoring structure of a foundation pit support capable of recycling anchor bars, and a method for efficiently recycling anchor bars. The end part, entering the innermost end, entering a soil body, of an anchoring piece is arranged as an arc-shaped end part, and the anchor bars bypasses the arc-shaped end part of the anchoring piece, so that the resistance of the anchor bars moving or sliding from the arc-shaped end part is greatly reduced, a part of one end of each anchor bar is exposed and extended out from the vertical enclosure of a foundation pit, and the anchor bars are conveniently pulled out by traction equipment through the exposed parts, so that the recycling efficiency of the recyclable anchor bars is high, the recycling cost is also reduced, and the purposes of shortening the construction period and lowering the engineering cost are achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an anchor pull structure for foundation pit support and a recovery device and method for anchor tendons. Background technique [0002] In the support structure of the foundation pit, the use of the anchor-stay structure has many advantages, but the reinforcements of these external anchors are located in the soil outside the foundation pit. After the foundation pit project is completed, their existence will form underground obstacles. It brings difficulties to the new underground buildings or structures outside the foundation pit, so it is very necessary to recover or remove the pulled anchor bars in time after the foundation pit project is completed. [0003] At present, there are many technologies and methods related to the recovery of anchor bars, mainly for the recovery of tunnel support anchors in mines, but less for the recovery of anchor bars in soft soil foundati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74
Inventor 刘全林宋伟民范君宇毕平均赵元一唐德康王冰冰
Owner SHANGHAI STRONG FOUND ENG
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