深厚覆盖软土地层多向地震动力反应分析  

Plasto-elastic Dynamic Response of Horizontally Layered Sites under Multi-directional Earthquake Shaking

作　　者：蔡宏英[1] 周健[1] 李相崧[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]香港科技大学土木工程系

出　　处：《同济大学学报（自然科学版）》2000年第2期177-182,共6页Journal of Tongji University:Natural Science

摘　　要：在弹塑性边界面模型的基础上 ,通过试验 ,研究了上海地区典型粘土和砂性土的动力特性 ,取得了针对边界面模型的计算参数 ,并采用多向地震作用下的水平地层弹塑性动力反应分析程序 (SUMDES)对以深厚软土覆盖地层为特点的上海地区典型的土层断面 ,以苏南核电站为主的地震输入进行了场地反应分析 ,在加速度特性、孔压特性和动应力特性等方面取得了相应的结果 .针对上海地区厚覆盖土层 ,对不同土层厚度作了对比研究 ,进行了相应的分析比较 ,并得出了有意义的结论 .还采用多向地震作为输入 。Based on the plasto-elastic bounding surface model, the dynamic characters of typical clay and silt were studied through several types of laboratory dynamic tests. The parameters of dynamic bounding surface model were given upon the tests. By using a nonlinear procedure for response analysis of horizontally layered sites subjected to multi-directional earthquake loading, the response of acceleration, pore pressure and dynamic stress in Shanghai area under different earthquakes were studied. According to the characters of thick cover soil layer in Shanghai area, different depths of earthquake input were calculated. And dynamic responses of the multi-directional earthquake input were studied.

关 键 词：多向地震 动力反应分析 水平地层 深厚覆盖软土地层 弹塑性边界面模型 土层断面 土层参数 

分 类 号：TU411.8[建筑科学—岩土工程]