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Cable-force-adjustable anchor pull anti-slide pile and construction method thereof

An anti-sliding pile and cable adjustment technology, which is applied in excavation, sheet pile wall, foundation structure engineering, etc., can solve problems such as non-existence, and achieve the effect of reducing pile top displacement, simple structure and convenient operation.

Inactive Publication Date: 2018-09-14
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

[0004] The current over-tensioning and compensating tensioning methods can only make up for the loss of prestress caused by the springback deformation of the anchor cable system and the deformation of the foundation under the anchor pier in a short period of time, while the prestressed anchor cable is under long-term load. The prestress loss caused by the action is restricted by the construction period and construction technology, and there is no reasonable and effective compensation measure for the time being

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  • Cable-force-adjustable anchor pull anti-slide pile and construction method thereof
  • Cable-force-adjustable anchor pull anti-slide pile and construction method thereof
  • Cable-force-adjustable anchor pull anti-slide pile and construction method thereof

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Embodiment Construction

[0038] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] Anchor-stayed pile treatment scheme is selected for this slope. Considering the deep soil slope, the bottom of the pile is not embedded in the bedrock, and the displacement of the pile top is difficult to control; the rock layer in the anchorage section of the anchor cable is a fully weathered argillaceous sandstone, which has a large loss of prestress and a long creep stability time. After the cable tensioning is completed, the anchor is sealed with concrete immediately, and the prestress loss caused by the late creep and relaxation of the rock and soil mass and the anchorage cannot be controlled at all. Therefore, the adjustable cable force anchor-tension anti-slide pile is introduced to realize multiple compensation tensions and achieve the preset reinforcement effect. Its specific design and control parame...

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Abstract

The invention discloses a cable-force-adjustable anchor pull anti-slide pile. Prestress anchor cables are additionally arranged within the range of 1.5-4.5 m below the top of the anti-slide pile, anda cable force adjusting device is additionally arranged at the anchoring end of each anchor cable, wherein each cable force adjusting device comprises a cable adjusting device, a tensioning device anda connecting device for connecting the tensioning device with the cable adjusting device. The cable adjusting devices are used for controlling the magnitude of cable force and increasing or decreasing the cable force of anchor cables according to the project needs. The tensioning devices are used for providing or releasing tensioning force for tension compensation. According to the cable-force-adjustable anchor pull anti-slide pile, the cable force of the anchor pull pile can still be adjusted after project completion and operation, so that the prestress loss of the anti-slide pile is compensated.

Description

technical field [0001] The invention relates to the technical field of landslide prevention and control, and more specifically relates to an anchor-tension anti-slide pile with adjustable cable force and a construction method thereof. Background technique [0002] The prestressed anchor cable anti-slide pile (commonly known as the anchor pile) is a composite force-bearing structure that uses the joint force of the anchor cable and the pile to resist the thrust of the landslide. It uses borehole pouring or formwork pouring into piles, and one or more rows of anchor cables are set on the piles, and tension (prestress) is applied to the anchor cables, and the piles are anchored in stable bedrock through the anchor cables. The basic principle is to rely on the embedding effect of the rock and soil around the pile on the pile, transmit the thrust of the landslide to the stable stratum, and use the anchoring effect and passive resistance of the stable stratum to stabilize the land...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D5/76
CPCE02D5/76E02D17/207E02D2250/0046E02D2600/30
Inventor 李元松姜成潼王亚军司马丹琪何泉卓浩
Owner WUHAN INSTITUTE OF TECHNOLOGY
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