深厚覆盖软土地层多向地震动力反应分析

英文篇名：Plasto-elastic Dynamic Response of Horizontally Layered Sites under Multi-directional Earthquake Shaking
中文刊名：同济大学学报(自然科学版)
英文刊名：JOURNAL OF TONGJI UNIVERSITY
作者：蔡宏英 ; 周健 ; 李相崧
英文作者：CAI Hong-ying 1 ; ZHOU Jian 1 ; LI Xiang-song 2 (1.Department of Geotechnical Engineering ; Tongji University ; Shanghai 200092 ; China ; 2.Hongkong University of Science and Technology ; Hongkong ; China)
中文关键词：多向地震 ; 弹塑性模型 ; 动力反应分析 ; 水平地层
英文关键词：multi-directional earthquake shaking ; dynamic response ; plasto-elastic model ; horizontally layered sites
出版日期：2000-04-30
机构：同济大学地下建筑与工程系!上海200092,同济大学地下建筑与工程系!上海200092,香港科技大学土木工程系!香港
年：2000
期：02
出版单位：同济大学学报(自然科学版)

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 ,分析了多向地震的反应
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.

引文

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