Anti-seismic face plate structure for rock-fill dam with concrete face plate and method for constructing face plate anti-seismic structure

Abstract

The invention discloses an anti-seismic face plate structure for a rock-fill dam with a concrete face plate and a method for constructing the anti-seismic face plate structure. The method includes that a middle sandwich layer is laid along an area between the concrete face plate and a cushion of the rock-fill dam with the concrete face plate within the dam height range 0-H of a rock-fill dam body with the concrete face plate, and the H represents the dam height; the middle sandwich layer is an asphalt concrete face plate layer or a plastic concrete face plate layer, and perpendicular open seams are reserved in the plastic concrete face plate layer; when the middle sandwich layer is the plastic concrete face plate layer, the perpendicular open seams reserved in the plastic concrete face plate layer and perpendicular open seams reserved in the concrete face plate are staggered from one another, and a protective layer is coated on a surface layer of the middle sandwich layer. The anti-seismic face plate structure and the method have the advantages that the middle sandwich layer is laid between the original concrete face plate and the cushion, the anti-seismic face plate structure is in such a face plate structure form that stress conditions of the face plate in an operating period and an earthquake period are sufficiently improved by the aid of asphalt concrete and plastic concrete, and a project can be advantageously constructed efficiently, conveniently and quickly; the plastic concrete or the asphalt concrete is particularly laid, deformation among the original concrete face plate and cushion materials is coordinated, and leakage due to the fact that the face plate cracks in tension can be prevented.

Description

technical field [0001] The invention relates to an anti-seismic structure of a concrete face plate of a water conservancy and hydropower face face dam and a realization method thereof. In particular, the invention relates to a face plate anti-seismic structure for a concrete face rockfill dam and a construction method thereof. Background technique [0002] As the main anti-seepage structure of concrete face rockfill dam, its safety and reliability have been one of the main issues concerned by the dam industry. Under the action of self-weight and earthquake load, the panel often has a large tensile stress. Because the concrete material is weak in resisting tensile deformation, it is easy to produce structural tensile cracks penetrating the panel, which makes the anti-seepage system in this part invalid. [0003] The existing face rockfill dam design scheme is to set cushion materials with more fine grain content under the face plate to control the relatively smooth contact b...

AI Technical Summary

Problems solved by technology

However, during the operation period and the earthquake period of the face dam, there will still be a hollow phenomenon due to the difficulty in coordinating the deformation of the face plate with the rockfill body, resulting in a large stress on the face face, especially a large tensile stress, which will cause damage to the face face and affect the safety of the anti-seepage system

For example, after the Tianshengqiao face rockfill dam was completed, the face plate was separated from the rockfill body, which led to large-scale cracking of the face face

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