Embedded recoverable expansion anchor cable and construction method thereof

Abstract

The invention discloses an embedded recoverable expansion anchor cable and a construction method thereof. The embedded recoverable expansion anchor cable comprises a grouting pipe, expansion unfolding arms, steel strand wires, a steel strand wire free sliding cabin, a fixing and bearing device, and a flexible telescopic sleeve, wherein the steel strand wire free sliding cabin is sleeved onto the upper part of the grouting pipe; the fixing and bearing device is arranged at the lower end of the grouting pipe; the expansion unfolding arms are uniformly distributed on the periphery of the grouting pipe; the upper ends of the expansion unfolding arms are fixed to the bottom of the steel strand wire free sliding cabin; the lower ends of the expansion unfolding arms are fixed to the top of the fixing and bearing device; the steel strand wire free sliding cabin can move in the axial direction with respect to the grouting pipe; the middle of each of the steel strand wires moves around the bottom of the fixing and bearing device; the two ends of each of the steel strand wires are respectively fixed onto the steel strand wire free sliding cabin and the two end parts of each of the steel strand wires respectively extend from the steel strand wire free sliding cabin; and the flexible telescopic sleeve is sleeved on the expansion unfolding arms and the steel strand wires. According to the embedded recoverable expansion anchor cable, the steel strand wires can be recovered and have higher bearing capacity.

Description

Technical field [0001] The invention relates to an anchor cable used in a rock-soil temporary anchoring project in the field of civil engineering and a construction method for anchoring rock and soil with the anchor cable. Background technique [0002] The impact of residual steel strands in the construction of deep foundation pits on the surrounding environment is one of the hot spots in geotechnical engineering research and development in the new era. In some short-term temporary construction projects, after the temporary excavation phase is over, the existing The high-strength steel strand not only affects the underground environment of this project, but also greatly affects the future development and construction of the surrounding environment. If the steel strands after the completion of the construction work of the support project are not recycled in time, the subsequent development of the surrounding environment will inevitably cause repeated construction and increase the ...

AI Technical Summary

Problems solved by technology

[0002] The influence of residual steel strands on the surrounding environment in the construction of deep foundation pit engineering is one of the hotspots in the research and development of geotechnical engineering in the new era. In some short-term temporary construction projects, after the temporary excavation stage is over, the The high-strength steel strand not only affects the underground environment of this project, but also greatly affects the future development and construction of the surrounding environment

If the steel strands after the completion of the support engineering construction are not recovered in time, the subsequent development of the surrounding environment will inevitably lead to repeated construction and increase additional processing costs for the steel strands. The mechanical removal of the twisted wire will disturb the original underground building structure, destroy the original stress balance, and bring adverse effects on the stability of the previous structure

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