考虑SSSI效应的城市区域建筑群地震响应分析  

Seismic response analysis of urban building clusters on a regional scale considering structure-soil-structure interaction

作　　者：张博文 翟盼盼 吕洋 熊峰[1,3] ZHANG Bowen;ZHAI Panpan;LV Yang;XIONG Feng(College of Architecture&Environment,Sichuan University,Chengdu 610065,China;Institute of New Energy and Low-carbon Technology,Sichuan University,Chengdu 610065,China;Key Laboratory of Deep Earth Science and Engineering,Ministry of Education,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学建筑与环境学院,四川成都610065 [2]四川大学新能源与低碳技术研究院,四川成都610065 [3]四川大学深地科学与工程教育部重点实验室,四川成都610065

出　　处：《地震工程与工程振动》2020年第5期187-192,共6页Earthquake Engineering and Engineering Dynamics

基　　金：四川省国际科技创新合作项目(2019YFH0120)。

摘　　要：城市区域尺度上建筑群的地震响应分析对城市震后灾害的损失估计具有重要意义。对于建筑密集的城市区域,结构-土-结构相互作用(structure-soil-structure interaction,SSSI)在以往分析中常被忽略,然而,最近的研究发现,SSSI效应在包含大量高层建筑的区域动力分析中不可忽略。因此,本文提出了一种考虑SSSI效应的城市区域建筑群地震反应分析的简化方法,并以四川大学望江校区的建筑物为例进行了研究。结果表明,SSSI效应可以降低一部分建筑物的地震响应,但也有一部分建筑物遭受更严重的破坏,这与输入的地震动特性、场地条件和建筑物特性有关。Seismic response analysis of buildings on a city scale is important for loss estimation and disaster mitigation in cities.However,the structure-soil-structure interaction(SSSI)effect due to densely packed buildings is often neglected in most analyses.Yet,recent studies have shown that SSSI effects cannot be neglected,especially for site-city interaction analyses consisting of a large number of tall buildings.Therefore,this work proposed a simplified method for seismic response analysis of buildings on a regional scale considering SSSI effects.Then the Sichuan University campus in Chengdu is used as a case study.The results show that SSSI effects reduce the seismic response of most buildings,while some buildings suffer more severe damage,depending on the input seismic ground motions,site characteristics,and building configurations.

关 键 词：城市区域 地震响应分析 结构-土-结构相互作用 

分 类 号：TU984[建筑科学—城市规划与设计]