桩-土-结构相互作用分析中土动力模型的修正  

Modification of Soil Dynamic Constitutive Model in Pile-soil-structure Interaction Analysis

作　　者：邓浩昀 金新阳[2] 顾明[1] 黄吉锋[2] DENG Haoyun;JIN Xinyang;GU Ming;HUANG Jifeng(State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Institute of Building Structures,China Academy of Building Research,Beijing 100020,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]中国建筑科学研究院建筑结构研究所,北京100020

出　　处：《同济大学学报（自然科学版）》2018年第11期1473-1478,1574,共7页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(90715040;91215302);土木工程防灾国家重点实验室基金(SLDRCE15-A-04)

摘　　要：提出桩-土-结构体系等效线性模型的修正方法.确定了近场区域的范围,并将该区域土的剪切模量乘以修正系数,得到修正等效线性模型.分析大量模型并求出相应修正系数,然后对所有修正系数进行回归分析,得到经验拟合算式.结果表明:强震作用下,土体采用等效线性模型能大幅提高桩-土-结构体系动力分析的精度.The modified method of equivalent linear model was proposed when performing pile-soil-structure interaction.The dimension of near region was solved and the modified equivalent linear model was obtained.Then,the extensive numbers of the models were analyzed and the modified parameters were solved.Finally,the regression analysis was performed to obtain the empirical equation based on the extensive modified parameters.It is shown that the accuracy of pile-soil-structure interaction analysis under strong earthquake is improved with the modified method.

关 键 词：桩-土-结构相互作用 等效线性 近场区域修正法 动力响应 

分 类 号：TU435[建筑科学—岩土工程]