摘要
采用理论模型计算了考虑土-结构相互作用(SSI)效应的框架-摇摆墙结构的地震响应。所提出的模型可以在结构初步设计完成后,进行结构响应及参数设定的分析验证。根据所提出的理论模型,对固定地基的框架结构(RF)、考虑SSI效应的框架结构(SF)、固定地基的框架-摇摆墙结构(RW)以及考虑SSI效应的框架-摇摆墙结构(SW)四种模型进行了时域分析,并考虑了5种不同的土性。结果表明,SSI效应会增大框架-摇摆墙结构的响应,框架-摇摆墙结构对土体条件变化的敏感度比框架结构更高。因此,在框架-摇摆墙结构的抗震设计中,需要考虑SSI效应。如果不能准确地确定地基特性,可能会导致对响应的错误评估。
In this paper,a theoretical model is used to calculate the seismic response of a rocking wall-frame structure considering soil-structure interaction(SSI).The proposed model can be used to analyze and verify the structural response and parameter setting after the preliminary design of the structure completed.In this paper,four models of frame structure on the fixed foundation(RF),the flexible foundation with SSI effect(RW),rocking wall-frame structure on the fixed foundation(SF)and the flexible foundation with SSI effect(SW)are analyzed in time domain.Five different soil properties are considered.The results show that SSI effect may increase the response of the rocking wall-frame structure,and with the rocking wall attached,the structure is more sensitive to soil condition changes than the frame structure.Therefore,SSI effect must be considered in the seismic design of the rocking wall-frame structure.If the foundation characteristics cannot be accurately determined,it may lead to the wrong evaluation of the response.
作者
何东毅
李培振
HE Dongyi;LI Peizhen(Department of Disaster Mitigation for Structure,Tongji University,Shanghai 200092,China;State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)
出处
《结构工程师》
2023年第3期32-38,共7页
Structural Engineers
基金
国家自然科学基金资助项目(51978524)。
关键词
土-结构相互作用
框架-摇摆墙结构
动力时程分析
soil-structure interaction
rocking wall-frame structure
dynamic time history analysis
