【摘要】 采用有限元结合三维粘弹性局部人工边界的动接触地震波动模拟方法建立拱坝-地基-库水的有限元计算模型,研究库水对结构振动频率和振型的影响。并借助APDL语言实现粘弹性人工边界、动水压力及地震波的自动输入模块,对拱坝-地基-库水联合作用下的结构进行抗震计算时程分析。计算结果为优化坝体结构的动力特性和抗震设计提供参考。更多还原

【Abstract】 In this paper,combining finite element with 3-D viscoelastic local artificial boundary of the dynamic contact seismic wave simulation methods,established the finite element model of arch dam-foundation-water to study the impact of reservior water on vibration frequency and vibration mode.The viscous-spring artificial boundaries,hydrodynamic pressure and seismic wave can be automaticly input by APDL Language.The time history analysis method is used to calculate and analyze the dynamic response of structures under combined effect of dam body,foundation and reservoir water.The research results can be supplied the theory reference for the optimization of the dam structure.更多还原