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Electric smelting type pressure type recyclable anchor rod technology

A pressure-type, anchor technology, applied in the direction of sheet pile walls, buildings, foundation structure engineering, etc., can solve the problems of insufficient pull-out resistance of anchor rods, pollution of the surrounding environment, etc., achieve simple and complete recovery, and improve the effect of pull-out resistance

Active Publication Date: 2013-05-29
WUHAN SURVEYING GEOTECHN RES INST OF MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to develop an electric fusion pressure type recyclable bolt technology that can solve the problems of safety, environmental pollution and insufficient pullout resistance of the bolt

Method used

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  • Electric smelting type pressure type recyclable anchor rod technology
  • Electric smelting type pressure type recyclable anchor rod technology
  • Electric smelting type pressure type recyclable anchor rod technology

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Embodiment Construction

[0030] An electrofusion pressure type recoverable bolt technology, the steps are as follows:

[0031] 1) Drilling and forming holes: Drilling and forming holes on the side wall of the foundation pit (following pipe technology is used in complex strata). After reaching the designed hole depth, take out the drill pipe and evacuate the drilling machine. The hole diameter and hole depth are implemented according to the design requirements;

[0032] 2) Fabrication and installation of electrofusion recyclable bolts;

[0033] 3) Anchor installation: place the prepared electrofusion pressure-type retrievable anchor in the borehole, and pull out the follow-up casing;

[0034] 4) Grouting, tensioning and locking: start the grouting pump, and grout the prepared grout to the anchorage section through the embedded grouting pipe according to the design pressure, flow rate and flow rate. After the grout reaches its age, stretch and lock it according to the design or relevant specification r...

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Abstract

Provided is electric smelting type pressure type recyclable anchor rod technology. The electric smelting type pressure type recyclable anchor rod technology is novel recyclable anchor rod technology which is applied to city foundation pit supporting. The basic implementation steps are as follows: 1) after a foundation pit is excavated, a corresponding platform is drilled to form a hole; 2) an electric smelting type pressure type recyclable anchor rod is manufactured and installed; 3) the anchor rod is placed; 4) grouting, solidification and pre-stress tensioning locking are conducted by pre-embedding a grouting pipe; 5) after the anchor rod completes a use cycle, an anchor rod material is recycled through an electric smelting model. The electric smelting type pressure type recyclable anchor rod technology has the advantages that a junction form of an anchor rod body material and a pressure type end support plate is changed, and the pulling resistance of the anchor rod is improved to a greater degree; a connection of the rod material and an end plate in an anchoring system can be easily removed through characteristics of a low melting point metal material, and the recycling of the anchor rod material can be achieved very safely; the anchor rod is recycled through an electric conduction salvation model, and no pollution is generated to city foundation pit peripheral environment; the anchor rod body material can be recycled in a safe, high-efficiency and pollution-free mode through the several kinds of modes.

Description

technical field [0001] The invention relates to the field of engineering technology, in particular to a novel recoverable bolt technology. Background technique [0002] With the further development of urban underground space utilization, the use of anchor technology is restricted by the red line of planning land use, and the detachable and recoverable anchor has become a new development direction of anchor technology. At present, there are many problems in the traditional retrievable bolt technology: 1) Mechanical retrievable bolt technology, the mechanical coupling has limited bearing capacity, resulting in limited anchoring force provided by the bolt; 2) Chemical retrievable bolt technology, recycling Insufficient part of the bolt remains in the soil, and the chemicals used in this technology pollute the surrounding environment of the foundation pit; 3) The mechanical recyclable bolt technology, the sudden fracture of the bolt during the bolt recovery process is likely to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D11/00E02D5/76C22C30/04
Inventor 凌飞张艳军余敦猛余火忠
Owner WUHAN SURVEYING GEOTECHN RES INST OF MCC
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