谷幅收缩与库水对溪洛渡动力响应的影响北大核心CSCD

溪洛渡水电站位于地震多发的西南地区,对其进行抗震分析评价具有重要的意义。本文采用拱坝-库水-地基系统非线性损伤分析模型,分析了不同库水位条件下谷幅收缩对溪洛渡拱坝的动力响应的影响。结果表明:库岸谷幅收缩会增大拱坝坝肩处、大坝中部靠近坝肩处及孔口附近的塑性损伤,而水位的抬升能缓解谷幅收缩的不利影响。

Effects of canyon contraction and reservoir stage on Xiluodu arch dam dynamic response

The Xiluodu arch dam is located in the earthquake-prone southwest region, and its seismic analysis and evaluation is of great significance. In this work, a nonlinear damage analysis model of the arch dam-reservoir water-foundation system is used to analyze the influence of canyon contraction on the dynamic response of this dam under different reservoir stages. The results show that the deformation will aggravate plastic damage to the dam at its abutment and in its middle part near the abutment and the orifices, while a high reservoir stage can alleviate the adverse effect of canyon contraction.