近断层脉冲型地震动下基础隔震结构的碰撞响应

英文篇名：Seismic response of base-isolated structures under near-fault pulse-like ground motions considering potential pounding
中文刊名：地震工程与工程振动
英文刊名：Earthquake Engineering and Engineering Dynamics
作者：叶昆 ; 陈耀晖 ; 胡轩 ; 舒欣 ; 孙浩文
英文作者：YE Kun ; CHEN Yaohui ; HU Xuan ; SHU Xin ; SUN Haowen ; School of Civil Engineering and Mechanics ; Huazhong Universtity of Science and Technology
中文关键词：近断层脉冲型地震 ; 碰撞 ; 基础隔震 ; 弹塑性时程分析 ; 延性需求
英文关键词：near-fault pulse-like ground motion ; pounding ; base-isolation structure ; the non-liner seismic response ; ductility demand
出版日期：2014-08-15
机构：华中科技大学土木工程与力学学院;
年：2014
期：S1
出版单位：地震工程与工程振动

摘要

LRB基础隔震结构在近断层脉冲型地震下会产生较大的水平位移,甚至超出预留宽度而与周围挡墙发生碰撞。本文采用数值分析的方法,在SAP2000中建立了精细化的钢筋混凝土结构平面框架模型,通过弹塑性时程分析,研究了碰撞对基础隔震结构的影响规律,并通过参数研究进一步探究了邻近构造物与隔震基础距离、碰撞刚度、不同地震动对碰撞响应的影响。
LRB( Lead Rubber Bearing) base-isolated structure will produce a big displacement under near-fault pulse-like ground motions,which may be even beyond the width reserved and pound on its retaining walls surrounding. In this paper,numerical analysis method is used and a fine model of reinforced concrete frame is established based on Sap2000 software to study the non-linear seismic response of base-isolated structure. Parametric study on dynamic response of LRB base-isolated structure is also investigated to see how the gad width,pounding stiffness and the characters of earthquake ground motion can affect the results.

引文

[1]叶昆,李黎.LRB基础隔震结构在近断层脉冲型地震作用下的动力响应研究[J].工程抗震与加固改造,2009,31(2):32-39.YE Kun,LI Li.Study on the dynamic response of LRB base-isolated structure under near-fault pulse-like ground motions[J].Earthquake Resistant Engineering and Retrofitting,2009,31(2):32-39.(in Chinese)
    [2]叶献国,谢一可,李康宁.基础隔震结构在侧向碰撞下的地震反应分析[J].地震工程与工程振动,2008,28(4):161-167.YE Xianguo,XIE Yike,LI Kangning.Earthquake response analysis of base-isolated structure considering side impact[J].Journal of Earthquake Enigneering and Engineering Vibration.2008,28(4):161-167.(in Chinese)
    [3]Anagnostopoulos S A,piliopoulos K V.An investigation of earthquake induced pounding between adjacent buildings[J].Earthquake Engineering and Structural Dynamics.1992,21(4):289-302.
    [4]Chopra A K.结构动力学一理论及其在地震工程中的应用[M].北京高等教育出版社,2005.Chopra A K.Dynamics of Structures:Theory and applications to earthquake engineering[M].Beijing Higher Eduation Press,2005.(in Chinese)