Shear and pressure type anchor pile structure and its construction method

Abstract

The invention discloses a shear-yielding and pressure-yielding cable-anchored pile structure which comprises a pressure-yielding slide-resistant pile structure and a pile block shear-yielding anchoring structure. The pressure-yielding slide-resistant pile structure comprises an slide-resistant pile, wherein a pressure-yielding layer is arranged on a side face where the slide-resistant pile is in contact with a slope; the pile block shear-yielding anchoring structure comprises a free section drill hole, and an anchoring section drill hole is formed in the bottom face of the inner side of the free section drill hole; the free section drill hole extends inward to the inner side of a potential slip face of the slope, an outer orifice of the free section drill hole is located in a contact face of the slope and the pressure-yielding layer, through holes communicating with the free section drill hole are formed in the slide-resistant pile and the pressure-yielding layer, the inner side end of an anchor bar extends inward to be located in the anchoring section drill hole, and the outer side end of the anchor bar extends outward out of the slide-resistant pile; mortar fills the anchoring section drill hole, a low compression modulus grouting material fills the free section drill hole, and an anchorage device for tensioning and fixing the anchor bar is arranged on the outer orifice of each of the through holes. The invention also provides a construction method of the shear-yielding and pressure-yielding cable-anchored pile structure.

Description

technical field [0001] The invention belongs to the technical field of slope reinforcement in geotechnical engineering, in particular to a yielding shear yielding type anchor pile structure and a construction method thereof. Background technique [0002] A bedding rock slope is a rock slope in which the inclination of the rock layer is consistent or basically consistent with the orientation of the slope surface. It is a common and easily unstable rock slope type. When performing slope cutting and excavation on bedding rock slopes, because the rock layer is usually a weak surface, if the inclination angle of the rock layer and the slope angle of the slope meet certain conditions, the slope rock mass is easy to collapse under the action of gravity. Integral or local instability and failure along the rock formation may cause losses or disasters. [0003] In order to avoid the instability and failure of bedding rock slope, it is very necessary to take reasonable support and rei...

AI Technical Summary

Problems solved by technology

As far as this construction technology is concerned, since part of the slope cutting and excavation construction has been carried out before the implementation of the anchor pile structure, it cannot be regarded as a real pre-reinforcement technology. In addition, the slope cutting and excavation construction is divided into two parts: Phase implementation is obviously uneconomical and inconvenient for construction organization

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