中文摘要：

基于三维显式有限元算法并结合粘弹性人工边界条件,针对某岛型大型工程场地,研究了岛型地质、地形条件对地震动反应的影响,分析了该工程场地地表地震动峰值加速度的分布规律。在对该工程场地进行地震动小区划的基础上,分析了不同区的地表加速度反应谱特性。研究结果为该大型工程场地上建筑及设备布置的地震安全性评价提供参考。

英文摘要：

Based on the 3D explicit FEM and viscous.spring artificial boundary condition, the topography and soil effects on ground motion of large engineering site with islands in earthquake were investigated. The distribution of Peak Ground Acceleration over the whole engineering site was analyzed. Microzonation of ground motion parameters was done to investigate the different zone＇s seismic responsc spectrum. Results derived from this paper can provide a reference for seismic salty evaluation of large engineering sites＇ layout.