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基于土层集总参数模型的土-结构动力相互作用分析

Soil-structure interaction analysis based on the soil lumped parameters model

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【Author】 WANG Mansheng~ 1,2) , PAN Danguang~ 1) , ZHOU Xiyuan~ 3) 1) Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China 2) School of Engineering, University of Alaska, 3211 Providence Drive, Anchorage, AK 99508, USA 3) Earthquake Engineering and Hazard Mitigation Institute, Beijing University of Technology, Beijing 100022, China

【机构】北京科技大学土木与环境工程学院；北京工业大学抗震减灾研究所北京100083阿拉斯加大学安克雷奇分校工程学院； AK99508；美国；北京100083；北京100022；

【摘要】在土-结构动力相互作用简化分析中,基于弹性半无限地基的假定,采用双自由度集总参数模型来简化土层,建立了基于土层集总参数模型的土-结构动力相互作用的分析模型,主要研究了不同土层对上部结构地震反应的影响.分析了在中硬、中软两种场地上5层和15层结构的地震反应,并与刚性基础假定下同样结构的地震反应分析比较.结果表明,对比较刚性的结构考虑土-结构相互作用可能存在一定的有利因素;对高层建筑,土-结构相互作用可能导致结构在地震作用下的层间变形较大幅度增加,是不利因素.更多还原

【Abstract】 Based on the assumption of elastic half-space a 2D lumped parameters model was used to simplify soil foundation. An analysis model of soil-structure interaction was constructed based on the soil physical model for mainly studying the interaction between subsoil and superstructure. The seismic responses of both a 5-floors building and a 15-floors building were analyzed. The results obtained from the 2D lumped parameters model of both medium hard site and medium soft site were compared with those derived from the rigid foundation model, some valuable conclusions were obtained.更多还原

【关键词】双自由度集总参数模型；地基土；土-结构相互作用；地震反应；
【Key words】 2D lumped parameters model； soil foundation； soil-structure interaction； seismic response；

【文献出处】北京科技大学学报 ,Journal of University of Science and Technology Beijing , 编辑部邮箱 ,2007年01期

【分类号】TU43
【被引频次】14
【下载频次】403

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