Double-defense-line flexible anchoring structure of dam body core wall geomembrane and foundation concrete structure

Abstract

The invention relates to a double-defense-line flexible anchoring structure of a dam body core wall geomembrane and a foundation concrete structure. According to the double-defense-line flexible anchoring structure of the dam body core wall geomembrane and the foundation concrete structure, a geomembrane in a dam body can be fixed to foundation concrete below the geomembrane. According to the technical scheme of the double-defense-line flexible anchoring structure, an anchoring groove is formed in the top face of the foundation concrete, the interior of the anchoring groove is divided into a plastic deformation area located on the upstream side and formed by filling plastic filler and an anchoring mechanism located on the downstream side, and the geomembrane penetrates through the plasticdeformation area to be fixed to the downstream side in the plastic deformation area through the anchoring mechanism. The double-defense-line flexible anchoring structure is suitable for engineering adopting the geomembrane as the middle anti-seepage core wall of the dam body.

Description

technical field [0001] The invention relates to a double-defense flexible anchoring structure of a dam body core wall geomembrane and a foundation concrete structure. It is suitable for projects using geomembrane as the anti-seepage core wall in the middle of the dam body. Background technique [0002] Putting the geomembrane in the middle of the dam body to form a geomembrane core wall rockfill dam can effectively isolate ultraviolet rays, prolong the life of the geomembrane, and at the same time avoid external damage such as rolling stones and organisms during the operation of the geomembrane. However, the research results show that the geomembrane core wall will generate a large tensile stress during the operation of the anchorage part between the bottom and the concrete structure, which will lead to the failure of the connection part. The main reason is that the anti-seepage body moves downstream due to the thrust of the water load after water storage, and the displacem...

AI Technical Summary

Problems solved by technology

However, the research results show that the geomembrane core wall will generate a large tensile stress during the operation of the anchorage part between the bottom and the concrete structure, which will lead to the failure of the connection part

The main reason is that the anti-seepage body moves downstream due to the thrust of the water load after water storage, and the displacement of the anchorage part occurs. The geomembrane is affected by the "clamp effect", and a large tensile deformation occurs locally, resulting in the concentration of tensile stress. Case

Local tensile stress concentration may cause geomembrane tear damage or anchorage failure

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