Anchor cable structure with prefabricated inner anchor head for controlling grouting for many times

Abstract

The invention relates to an anchor cable structure with a prefabricated inner anchor head for controlling grouting for many times. The anchor cable structure comprises an outer anchoring end and an anchor cable main body, wherein the top end of the anchor cable main body is connected to a frame beam through the outer anchoring end; the anchor cable main body comprises a plurality of unbonded steelstrands, a primary grouting pipe and a secondary grouting pipe; the prefabricated inner anchor head is arranged at the bottom end of the anchor cable main body, a 30-50 cm range is reserved at the end, close to the cable anchor main body, of the prefabricated inner anchor head, and is not grouted, a grout stopping plug is arranged between the prefabricated inner anchor head and the anchor cable main body, and the secondary grouting pipe stretches into a position which is not grouted in the prefabricated inner anchor head through the grout stopping plug; after the prefabricated inner anchor head stretches into the bottom of an anchor cable hole, cement paste is grouted at a normal pressure through the primary grouting pipe, a curtain is formed out of a stainless steel tube in the prefabricated inner anchor head of an anchoring section, and cement paste is grouted in a splitting manner to the anchoring section through the secondary grouting pipe to reinforce rock and earth masses aroundthe anchoring section to form a tree root-shaped expanded anchoring body, so that the anchoring force is improved.

Description

technical field [0001] The invention relates to a prefabricated inner anchor head and anchor cable structure with multiple times of controlled grouting, which is suitable for side slope reinforcement projects of roads, railways, mines, municipalities and the like. Background technique [0002] The slope anchoring project is a concealed project. Its main materials, steel and concrete, are buried in various types of rock and soil. The anchoring section is in the soil layer. The bonding force between the anchoring section and the soil layer is not good. The contact of the site soil medium leads to the reduction of the physical and mechanical properties of the anchorage structure such as durability and strength. [0003] In order to improve the durability and anchoring effect of the soil anchoring project, in addition to improving the existing technology, combined with the continuous development of new technologies, new materials, and new processes, research new anchoring struct...

AI Technical Summary

Problems solved by technology

[0005] The patent of the present invention provides a prefabricated inner anchor head and anchor cable structure with multiple controlled grouting, which mainly solves the problem of insufficient anchoring force of the anchor cable in the soil layer

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