Design method for tensile type anchor cable

Abstract

The invention discloses a design method for a tensile type anchor cable. In view of the uneven distribution of shearing strength on the construction site, the tensile type anchor cable is designed according to actually measured parameters, a shearing strength formula of an anchorage body of the tensile type anchor cable and a rock and earth mass interface is better matched with an actually measured formula, and the actual stress state of the anchor cable is reflected more accurately. Compared with rough even shearing strength adopted in existing standards, the derived shearing strength formula of the anchorage body of the tensile type anchor cable and the rock and earth mass interface is matched with the actually measured formula, and the actual stress state of the anchor cable can be reflected more accurately. By the design method for the tensile type anchor cable, the safe and reliable anchorage engineering can be ensured, the length of the anchor cable is shortened, construction expenses are lowered, the design method can be widely applied to design and guiding construction of the tensile type anchor cable, and the social benefits and economic benefits are remarkable.

Description

technical field [0001] The invention relates to the design field of prestressed anchor cables, in particular to a design method of tension type anchor cables. Background technique [0002] As an important active reinforcement method, the tensile anchor cable has the characteristics of safety, reliability, fast construction speed, economy and practicality, and is widely used in geological reinforcement of geotechnical engineering. A number of anchor cable holes are excavated in the rock and soil, steel strands are put into the anchor cable holes, grouting is made around the steel strands, and the grouting body and the steel strands are combined into an anchor section. The protection and reinforcement of high slope rock and soil plays an irreplaceable role. [0003] The existing anchor cable design method assumes the number of anchor cable holes based on experience, and determines the maximum anchoring force of the anchor cable and the number of steel strands of the anchor ca...

AI Technical Summary

Problems solved by technology

[0004] Existing design methods mainly rely on experience to determine the number of anchor cable holes, and assume that the shear stress and shear stress are uniformly distributed in the construction environment. Evenly distributed, the uniform shear stress method adopted by the existing codes is too rough, which is likely to cause large deviations that are difficult to conform to the actual environment and structure of the construction site. Even the shear failure of the anchorage section threatens the safety of the anchorage project

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