Rapid pre-stressed anchor cable capable of being recycled and construction method thereof

Abstract

The invention provides a rapid pre-stressed anchor cable capable of being recycled and a construction method thereof. The anchor cable comprises a steel casing pipe and an expansion structure which issymmetrically distributed; a conical head is arranged at the bottom of the steel casing pipe, openings symmetrically distributed are formed in the side walls, the expansion structure comprises a fixed pin, a fixed pulley and an expansion head, the fixed pin and the expansion head are arranged in the openings in the side wall of the steel casing pipe, the two ends of the fixed pin are fixedly connected with the steel casing pipe, the expansion head is rotatably connected with the steel casing pipe through the fixed pin, the fixed pulley is fixed to the upper end of the conical head, one end ofa stress steel strand is connected with the expansion head, the other end of the stress steel stand winds around the fixed pulley to penetrate the steel casing pipe, one end of a non-stress steel stand is connected with the conical head, and the other end of the non-stress steel stand penetrates the steel casing pipe. Grouting is not needed, after mounting in-place operation, tension is achieved,after the supporting task is finished, the cable can be completely recycled, the effect on later-period building of the surrounding buildings is avoided, the construction period can be effectively shortened, resource waste is reduced, and the cable is suitable for the soft rock area and is particularly suitable for the emergency rush repair engineering and the temporary supporting engineering with the strict time need.

Description

technical field [0001] The invention belongs to the field of engineering support, and in particular relates to a recyclable fast prestressed anchor cable and a construction method thereof, which are suitable for soft rock areas, and are especially suitable for emergency rescue projects and temporary support projects with strict time requirements. technical background [0002] my country's anchor cable support technology began in the 1970s. Since the 1980s, the anchor cable support technology has been widely used, and has become a common method in slope control and engineering protection. Anchor cable support can be used in combination with support methods such as frame beams and anti-slide piles to fundamentally improve the integrity of the slope, improve the mechanical properties of the rock and soil mass of the slope, and achieve the treatment effect. [0003] Restricted by engineering conditions and engineering construction process, it is often necessary to set up prestre...

AI Technical Summary

Problems solved by technology

This link takes about 15 days. During this period, the entire anchor cable support project will be stagnant, which greatly affects the construction period.

For some emergency treatment projects with particularly urgent time requirements, ordinary anchor cables are no longer applicable due to the construction period, and the economical, safe and mature anchor cable support technology has to be abandoned in the scheme comparison, thus adopting high investment , high-risk other solutions, greatly discounted in terms of economy and safety

Too long grouting curing time is another factor restricting the further development of anchor cable support

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