【摘要】 考虑深覆盖砂层和岩土应力-应变的非线性特征,采用剪应力对比法进行地震液化判别,并建立了地基和坝体的非线性有限元计算模型。结合两溪河联补水电站首部枢纽工程,对深覆盖砂层地基上拦河大坝的抗震液化问题进行计算分析,计算结果可供工程参考。更多还原

【Abstract】 A nonlinear finite element numerical model was established for seismic analysis of a dam and its foundation,taking into account the deep overburden layer and the nonlinear feature of the stress-strain behaviors of foundation soils.The shear-stress comparison method was used to discriminate earthquake liquefaction.In combination with the head control works of hydropower,the calculation and analysis were carried out on the seismic liquefaction of dam on the deep overburden sand layer.The calculation results could be used for reference.更多还原