A self-pressurized anchor cable and its construction method

Abstract

The invention relates to a self-supercharging anchor cable and a construction method thereof. The self-supercharging anchor cable comprises an anchorage section and a free section; a plurality of cords are anchored with a surrounding rock at the anchorage section and stretch freely at the free section, and the cords are fixed at a porthole through an anchorage device; a grouting tube is parallel to the cords in arrangement; the cords and the grouting tube penetrate through a plurality of limit clamps at the anchorage section; and an air bag is arranged between the anchorage device and pothole. According to the invention, through arranging the limit clamps, the problem of the support system buckling failure due to the fact that the anchorage section and slope of the engineering slip, and then the prestress loses efficacy, or the prestress cannot reach a design value in the anchor cable tension process is solved; through arranging a polyethylene tube at the middle of the anchor cable in a penetrating manner, the conversion from the hydrostatic pressure to the hydrodynamic pressure in the slope is realized, wherein gauze packages plum blossom-shaped patching holes in the polyethylene tube; the dynamic intelligent anchor cable prestress application can be realized in a dynamic and intelligent manner through mounting the air bag between the anchorage device and the slope, and meanwhile, the air bag relieves the instant damage of impact load and earthquake load to a support structure.

Description

technical field [0001] The invention relates to a multi-stage resistance-increasing self-pressurized dynamic drainage anchor cable for slope protection and a construction method thereof, in particular to a deep foundation pit suitable for strong weathered rock or soil high and steep slopes and marine muddy strata The invention relates to an self-pressurized anchor cable for enclosure and a construction method thereof, which belong to the field of engineering support. Background technique [0002] Prestressed anchor cable reinforcement technology has been confirmed by many engineering practices as an effective reinforcement measure to improve the bearing capacity and stability of rock and soil mass. The prestressed anchor cable can fully exert the self-supporting potential of the rock and soil, adjust and improve the self-strength and self-stabilization ability of the rock and soil, reduce the self-weight of the support structure, save engineering materials, and ensure the sa...

AI Technical Summary

Problems solved by technology

[0005] 1. Only one-time prestress tension can be realized. When the prestress does not reach the design value, or when the prestress is lost, it is impossible to perform secondary tension to supplement the prestress;

[0006] 2. The static water in the reinforced surrounding rock body cannot be effectively dredged, and the hydrostatic pressure in the reinforced body gradually increases, resulting in the instability and destruction of the surrounding rock mass;

[0007] 3. The friction between the grouting body and the anchor cable is limited, which becomes the limiting factor for the anchoring force of the anchor cable, resulting in the anchoring force of the anchor cable not reaching the design value

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