考虑峰后应变软化的蓄水期坝肩岩体变形数值模拟研究  

Numerical Simulation on Rock Deformation of Dam Abutment in Water-storage Period Considering Post-peak Strain Softening

作　　者：汪维彬 Wang Weibin(Liaoning Runzhong Water Supply Co.,Ltd.,Shenyang 110166,Liaoning)

机构地区：[1]辽宁润中供水有限责任公司,辽宁沈阳110166

出　　处：《陕西水利》2020年第3期15-18,共4页Shaanxi Water Resources

摘　　要：水库蓄水期间坝肩岩体的变形较大,变形机制复杂。针对理想弹塑性本构模型的不足,根据前营子调节水库的地质勘查资料,构建起基于峰后应变软化的三维数值网络模型,对坝肩岩体的应力、位移以及塑性区的变化情况进行分析计算,结论显示该模型的预测分析结果更为准确,可为类似案例提供借鉴。During the storage period of the reservoir, the deformation of the rock mass at the abutment of the dam is large, and the deformation mechanism is complicated. Aiming at the shortcomings of the ideal elastoplastic constitutive model, a three-dimensional numerical network model based on post-peak strain softening was constructed based on the geological survey data of Qianyingzi adjusting reservoir, and the changes of stress, displacement and plastic area of rock mass at the abutment Analysis and calculation, the conclusion shows that the prediction analysis results of the model are more accurate, which can provide reference for similar cases.

关 键 词：蓄水期 峰后应变软化 岩体变形 

分 类 号：TU452[建筑科学—岩土工程]