Pressure dispersion type yielding anchor cable

Abstract

The invention discloses a pressure dispersion type yielding anchor cable. The pressure dispersion type yielding anchor cable comprises an inner anchoring section, a free section and an outer anchoring section, wherein the inner anchoring section comprises multiple levels of inner anchoring bearing bodies; n is an integer not less than 2; each inner anchoring bearing body comprises a bearing plate, a sealing shell and at least two yielding anchorage devices arranged between the bearing plate and the sealing shell; and a constant-resistance body of each yielding anchorage device is connected with an inhaul cable which passes through the bearing plate. The anchor cable disclosed by the invention can prevent a single inhaul cable from being snapped efficiently when over-great bearing force is applied to the inhaul cable, the loading capability of the whole yielding anchor cable after resisting earthquake is not changed, and the yielding anchor cable can be stretched-drawn integrally for once, so that convenience is provided for construction; a dispersion type anchoring way is adopted, so that the size of a drilling hole is small and good economical efficiency is obtained; and the pressure dispersion type yielding anchor cable, disclosed by the invention, is suitable for multiple stratum conditions and in particular for the anchoring of rock soil in earthquake regions and high-pressure deformation conditions.

Description

technical field [0001] The invention relates to an anchor cable structure used for rock and soil anchoring, in particular to a pressure dispersion type yield anchor cable. Background technique [0002] One of the main means of rock and soil reinforcement is anchoring through anchor rods or anchor cables. The stress characteristics of the two anchorages are that the deformation of the anchor cables must be coordinated with the deformation of the rock and soil mass. If the deformation of the rock mass exceeds the allowable anchor cable The maximum amount of deformation, the anchor cable will be pulled off. [0003] The yield anchor or anchor cable device is a kind of anchor or anchor cable that can maintain a predetermined anchoring force and form a certain amount of "deformation" to eliminate vibration energy or adapt to deformation, also known as yield anchor (cable), constant Anti-deformation anchor (cable), pressure anchor (cable). In geotechnical engineering, yield bolt...

AI Technical Summary

Problems solved by technology

[0011] The invention provides a pressure dispersion type yielding anchor cable, which has the characteristics of constant resistance and large deformation, and can maintain the constant force plastic slip when the cable exceeds the working load, so that the anchor cable can be "lengthened", thereby improving Improve the overall ductility, energy dissipation and impact load performance of the anchor cable to solve the problem of insufficient overall ductility of the existing pressure-distributed yielding anchor cable, uneven force between the cables, and easy to be broken when the tension is too large

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