考虑土-桩筏基础-结构的共同作用的层间隔震结构地震响应.docxVIP

引用格式：房思彤，刘德稳，张亚飞，等.考虑土弛筏根底#构的共同作用的层间隔震结构地震响应[J].科学技术与工程，202X, 21(9)： Fang Silong, Liu Dewen , Zhang Yafei, et al. Seismic response of story isolation struclure considering soil pile raft foundation structure inlerac — tion[ J ]. Science Technology and Engineering, 202X , 21(9)： 3716-3722. 建筑科学 考虑土成筏根底客构的共同作用的层间 隔震结构地震响应 房思彤，刘德稳，张亚飞，雷敏2 (1.西南林业大学土木工程学院，昆明650051 ； 2.同济大学土木工程学院，上海200091 ) 摘 要 层间隔震结构是一种新型隔震体系，近年来其隔震性能受到各国学者关注。采用有限元软件ABAQUS建立了层间 隔震结构三维整体空间模型，考虑地基土待庄筏根底心部结构的共同作用(soil-structure interaction ,SSI)，进行地震作用下的非 线性动力响应分析。研究了考虑SSI前后的层间隔震结构体系振动特性及动力响应，通过改变根底底部不同土层性质、不同 桩长，探讨各因素对考虑SSI的层间隔震结构的影响规律。结果说明：不考虑SSI的层间隔震结构基底剪力、各层位移明显大 于考虑SSI的情况;基底采用硬土层时的基底剪力、各层位移大于采用软土层时的情况；深桩根底相比浅桩根底的周期小、基 底剪力、顶点位移、各层位移均增大。 关键词 桩筏根底；SSI效应；层间隔震；非线性时程分析 中图法分类号TU352. 12 P315； 文献标志码A Seismic Response of Story Isolation Structure ConsideringSoil Pile Raft Foundation Structure Interaction FANG Si-tong1 , LIU Derven * , ZHANG Ya-fei , LEI Min2 (I. School of civil engineering, Southwest Forestry University, Kunming 65005 1 ； 2. School of civil engineering, Pongji University, Shanghai 200091 ) f Abstract j Story isolation struclure is a new lype of isolation system ? In recent years, its isolation performance has been concerned by scholars all over the world. A three-dimensional global spatial model of layered isolation structure was established by using the finite element software ABAQUS ? Considering the soil-structure interaction (SSI) of the soil-pile-raft foundation and superstructure , the nonlinear dynamic response of the stmcture under seismic action was analyzed . The vibration characteristics and dynamic response of stoiy isolation structure system before and after SSI were studied . The influence of various factors on the layer isolation structure considering SSI was discussed by changing the properties of different soil layers and different pile lengths at the bottom of the foundation . The suits show that the base shear force and displacement of story without SSI are signi