广东省阳江抽水蓄能电站二维工程场址对设计地震动的影响分析

Analysis of the Influence of the 2D Engineering Site at Yangjiang Storeage Energy Power Station on Designed Ground Motion

以广东阳江蓄能电站为例,通过建立可考虑二维复杂工程场地影响的显式有限元结合人工边界的计算模型,给出了二维复杂场地条件对该场地条件一维等效线性化结果的修正值。该分析模型除可以充分考虑二维复杂场地条件、计算效率非线性对场地的影响及吸能边界等多种因素外,还具有计算简单,结果合理等优点。

The typical 2D engineering site at Yangjiang storeage energy power station was chosen to analyze its ground motion parameters. Based on the explicit finite element schemes and multi-transmitting boundary condition methods, the computational models built in present analysis can give the amplified value of the ground motions parameters computed by the one dimension equivalent linear models. The computational models can take account into many factors Such as 2D site condition, computing cost, nonlinear of soil and absorbing boundary condition, etc. In addition the models are advantage in simplifying computation and giving the reasonable results. It is significant to provide the design parameters of ground motion of 2D engineering sites.