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在建立碾压混凝土拱坝等效连续概化模型的基础上 ,采用压扁单元和等效连续概化模型相结合来模拟碾压混凝土坝体的方法 ,运用四参数、Mohr- Coulumb和 Drucker- Parger准则分别模拟坝体、层面和基岩 ,以及用分散式裂缝模型模拟坝体开裂状态。对沙牌碾压混凝土拱坝进行的三维弹塑性有限元分析表明 ,坝肩出现了非层面向的裂缝并危及帷幕灌浆体 ,不利于拱坝正常运行。
On the basis of establishing the equivalent continuum generalized model of RCC arch dam, a method of simulating RCC dam by combining flattening unit and equivalent continuous generalized model was established. Four parameters, Mohr-Coulumb and Drucker- The Parger criterion simulates the dam body, bedding plane and bedrock, respectively, and simulates the cracking status of the dam with a distributed crack model. The three-dimensional elasto-plastic finite element analysis of Shapai RCC arch dam shows that non-layer-oriented cracks appear on the abutment and threaten curtain grouting, which is not conducive to the normal operation of arch dam.