柔性连接高层连廊结构地震响应及阻尼器配置

英文篇名：Seismic Response of the Flexible Connected High-rise Building and the Damper Arrangement
中文刊名：建筑结构
英文刊名：Building Structure
作者：杜永峰 ; 李春锋
英文作者：Du Yongfeng~(1 ; 2) ; Li Chunfeng~2 (1 Western Center of Disaster Mitigation in Civil Engineering ; Ministry of Education ; Lanzhou 730050 ; China) 2 Institute of Earthquake Protection and Disaster Mitigation ; Lanzhou University of Technology ; Lanzhou 730050 ; China)
中文关键词：高层连廊结构 ; 阻尼减震结构 ; 高层建筑 ; 结构抗震 ; 地震响应
英文关键词：high-rise connected building ; energy dissipation structure ; high-rise building ; damper connection ; seismic response
出版日期：2009-04-15
机构：西部土木工程防灾减灾教育部工程研究中心;兰州理工大学防震减灾研究所;
年：2009
期：S1
出版单位：建筑结构

摘要

针对一非对称双塔连体结构,在连廊两端采用水平柔性而竖向刚性的连接方式,并配合阻尼器减小结构地震响应。建立了串并联质点系层模型,分析了柔性连体结构对两种基本振型,即对称与非对称振型的影响。分析了非对称连体结构的振动方程,讨论了阻尼连廊位置在各楼层间发生变动时结构自振周期的变化规律,利用时程分析方法,对沿连廊设置方向施加EL Centro地震波的结构响应进行数值模拟,探讨了阻尼器的配置方式。研究结果表明,采用本文的模型可以合理分析连体结构的动力响应。引入耗能装置可以大大减小结构在地震作用下的动力响应,提高连体结构的抗震性能。
A unsymmetrical flexible connection spanning a twin-tower structure is employed to reduce the seismic response of the tower structure.A type of connectors,which are horizontally flexible while vertically rigid,are combined with dampers for adjacent tall building structures.A series-parallel particles system model is established,and is used to discuss the characteristics of vibration mode,i.e.,the symmetric and asymmetric,which are the two basic modes of flexible connected structure.The vibration equation of unsymmetrical connection structure is used to discuss the response of structure,and the vibration mode and periods are computed for different positions of the damper corridors.Time domain response is discussed by inputting El Centro seismic wave(1940) along the corridor direction,and the variation of peak response and energy dissipating ability of dampers are examined when the location of connectors changed.The results show that the model proposed in this paper is reasonable for analysis of the connected structures,and the introducing of energy dissipation devices can greatly reduce the seismic response of structures,and can improve the seismic performance of the connected structures.

引文

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