胶凝砂砾石坝模型试验研究

摘要

The stress distribution of CSG dam was tested by hydraulic structure model test method. The stress distribution of the dam under the action of water load and the stress distribution under the influence of the weight of the dam were obtained by the integral model test of the dam and the model test of the stratified and graded loading. The experimental results are as following:under the influence of gravity, the dam and the foundation are in the compression state, and the distributed state is large in the middle of the dam, and the small value is on both sides of the dam body. Upstream water load on the dam, the dam stress distribution is changed and the maximum stress areas appear in the dam foundation in the middle and lower reaches. The radial displacement of the dam is in downstream, and the upper displacement is larger than that of the lower part. The maximum value appears in the middle part of the dam.%采用水工结构模型试验法，探求胶凝砂砾石坝应力分布情况。通过胶凝砂砾石坝整体模型试验及坝体分层分级加载模型试验，得到了坝体在水荷载作用下的应力分布情况以及在坝体自重影响下的应力分布情况：受自重影响，坝体和坝基都处于受压状态，呈中间大两边小的分布形态；上游水荷载作用在坝体上后，使得坝体应力分布发生变化，最大应力区出现在坝基面中下游部，坝体水平向位移呈下游位移，整体为上部位移大于下部位移，最大值出现在坝中部位。