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。
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.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2008年第1期173-177,共5页
Journal of System Simulation
基金
国家自然科学基金(60273048)
关键词
地震动
地震安全性评价
显式算法
有限元
人工边界
seismic response
seismic salty evaluation
explicit method
FEM
artificial boundary condition
