【摘要】 针对龙首二级(西流水)面板堆石坝工程,根据面板坝土石料的大型动三轴试验结果,确定了坝料的残余应变模式,特别是残余体应变模式。在所建立的面板坝三维非线性动力反应有限元法基础上,建立了一套同时计入残余体应变和残余剪应变的面板堆石坝地震永久变形计算方法,对龙首二级面板坝工程进行了地震永久变形的计算,分析了坝体地震永久变形的量值和分布情况,为大坝的抗震设计提供了有力的技术依据。更多还原

【Abstract】 Based on the large scale dynamic triaxial test of Longshou CFRD rockfill material,the residual strain model,especially the residual volumetric strain model is proposed.A evaluation method of the earthquake-induced permanent deformation of the CFRD is developed accordingly by adopting 3-D nonlinear seismic response analysis method of CFRD.In this method,both residual shear strain and residual volumetric strain are considered.The study on earthquake-induced permanent deformation of Longshou CFRD is performed to provide technical basis for its seismic design.更多还原