基于ABAQUS的土层地震反应分析

Seismic response analysis of soil layer based on ABAQUS

基于一维波动理论和Spring/Dashpots单元实现了ABAQUS中粘性边界条件的施加,进而对弹性半空间的波源问题进行波动数值模拟,验证了ABAQUS软件中粘性边界条件的有效性。分别采用ABAQUS软件和RSLEIBM程序计算响嘡台阵3号测井的土层地震反应,并将计算结果与实际记录进行对比分析。结果表明,在地震动不大的情况下,ABAQUS计算结果能够较好地模拟地表地震反应,较RSLEIBM程序计算结果具有更高的准确性。

Based on wave motion theories and the Spring/Dashpots elements of ABAQUS software, the development of viscous boundary condition is realized. Then the viscous boundary condition is used to analyze the wave response of source problem in elastic half space. The records of Xiangtang borebole array （ 3^# ） site are also used to validate the seismic response with the ABAQUS software and the RSLEIBM procedures, respectively. The results of this study suggest that, when the earthquake motion is not strong, the results of ABAQUS software, which can simulate seismic response of soil layer appropriately, are more accurate than the results of RSLEIBM procedures.