Novel anchor rope for treating rocky slopes and inner anchor head of novel anchor rope

Abstract

The invention discloses a novel anchor rope for treating rocky slopes and an inner anchor head of the novel anchor rope. The inner anchor head comprises a bearing plate, a plurality of draw bars, a plurality of pressure bars and a plurality of stay rope holes. The stay rope holes are penetratingly formed in the bearing plate; the draw bars and the pressure bars which are symmetrically distributed are respectively arranged at two ends of the bearing plate and are perpendicular to the two ends of the bearing plate; each stay rope hole comprises at least one main hole, and stay ropes can penetrate the main holes. An inner anchoring section of the anchor rope comprises a plurality of inner anchor heads. The inner anchor heads are arrayed in an end-to-end connected manner, first ends of the various inner anchor heads are far away from a free section, and second ends of the various inner anchor heads are close to the free section; stay ropes are penetratingly arranged in at least one of the main holes of each inner anchor head and extend to the free section and an outer anchoring section, fastening sleeves are arranged at the tail ends of the stay ropes in the various main holes instead of sleeves and are squeezing sleeves or clip type anchors or other devices in the prior art, and axial force of the stay ropes can be transmitted to bearing plates via the fastening sleeves. The novel anchor rope and the inner anchor head have the advantages that loads can be effectively scattered by the inner anchor head, and accordingly the slope anchoring safety and long-term effectiveness can be improved.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a novel anchor cable and an inner anchor head for controlling rock slopes. Background technique [0002] The following discussion of the background of the invention is intended to facilitate an understanding of the invention. It should be understood, however, that the discussion is not an acknowledgment or admission that any of the material referred to was published, known or part of the common general knowledge as at the priority date of the application. [0003] In geotechnical engineering construction, prestressed anchoring technology has become the most common rock and soil reinforcement measure. Prestressed anchor cables can actively reinforce rock and soil, effectively increase the stability and safety factor of rock mass, and ensure the safety of engineering construction and operation period. , which mainly include the following categories. ...

AI Technical Summary

Problems solved by technology

In this way, the anchor cable cannot deform with the rock mass, loses the ability to adjust freely, and reduces the effect of slope reinforcement

[0008] (3) This type of anchor cable needs to form a pre-tensioned inner anchor head, so it is difficult to arrange the inner anchor head in the upward drilled hole

Whether it is a pressure-concentrated or pressure-dispersed anchor cable structure, the bearing plate used in the anchor cable structure has the problem of stress concentration caused by too small a pressure surface, and it is easy to crush the mortar near the bearing plate.

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