An anchor head for recovering prestressed anchor cables and its construction method

Abstract

An anchor head for recycling a pre-stressed anchor cable comprises a clamping piece, a movable slider, a thermoset resin ring and an anchor ring. The anchor ring is cylindrical and comprises a side wall and a bottom plate. A penetrating hole is formed in the middle of the bottom plate. The anchor ring is arranged outside the pre-stressed anchor cable in a sleeving mode. The movable slider is arranged in the anchor ring and formed by splicing a set of movable slider units. The inner end face of the movable slider makes contact with the bottom plate. A gap is reserved between the movable sliderand the side wall. A rib penetrating duct is formed in the movable slider along the long axis of the movable slider. The clamping piece is formed by splicing clamping piece units, clamps the outer side of the pre-stressed anchor cable and is inserted in a tapered portion. The gap between the side wall of the anchor ring and the movable slider is filled with the thermoset resin ring. A circle of heating belt is arranged on the outer side of the anchor ring. The heating belt is connected with a power supply through a wire. The technical problems that a traditional anchor cable cannot be detachedand is left in an original soil layer, so that material waste is caused, the development of the adjacent underground space is hindered and construction difficulty is increased are solved.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering anchor cable fixing devices, in particular to an anchor head capable of assembling and recovering prestressed anchor cables and a construction method thereof. Background technique [0002] The current urbanization is accelerating, the development of urban underground space is getting more and more attention, and the foundation pits for super high-rise building construction are getting deeper and deeper. The application of prestressed anchorage technology is increasing; the amount of steel and prestressed anchor cables as the main force-bearing components is also increasing, and its use effect is also better. However, traditional prestressed anchor cables are often used for one-time use and cannot be recycled. They will be left in the original soil layer after completing their functions, and sometimes they will invade the red line of adjacent buildings, which not only causes waste of materia...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anchor head and its construction method for reclaiming prestressed anchor cables. It is necessary to solve the problem that the traditional anchor cables cannot be disassembled, and that they are left in the original soil layer, resulting in waste of materials and the development of adjacent underground spaces. Obstacles, technical problems that increase the difficulty of construction

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