钢筋混凝土框架结构地震易损性分析

英文篇名：Seismic Fragility Analysis of RC Frame Structure Subjected to Earthquake
中文刊名：土木工程与管理学报
英文刊名：Journal of Civil Engineering and Management
作者：廖萍 ; 汪立生 ; 龙晓鸿
英文作者：LIAO Ping ; WANG Li-sheng ; LONG Xiao-hong ; Jiangsu Pan Pacific(Maunsell) Architectural and Engineering Design Co Ltd ; First Design and Research Institute ; Machinery Industry ; School of Civil Engineering and Mechanics ; Huazhong University of Science and Technology
中文关键词：框架结构 ; 地震需求 ; 地震易损性 ; 塑性角
英文关键词：RC frame structure ; seismic demand ; seismic fragility ; plastic hinge
出版日期：2013-12-15
机构：江苏泛亚联合建筑设计有限公司;机械工业第一设计研究院;华中科技大学土木工程与力学学院;
年：2013
期：04
出版单位：土木工程与管理学报

摘要

本文以一榀7层的钢筋混凝土框架结构为分析对象,采用SAP2000建立有限元模型,选取非线性Nlink单元来模拟梁和柱两端的塑性角,其中柱铰单元采用纤维PMM铰,梁铰单元设置弯矩铰。分别指定最大层间位移角和最大顶点位移角作为结构地震需求参数,并定义了相应的破坏状态。输入8条地震动记录进行结构地震易损性分析,得到了相应的易损性曲线。该方法可为结构的抗震性能评价提供参考。
A seven-story RC frame structure is selected as an example,the corresponding finite element model is established by SAP2000,and the nonlinear Nlink element is adopted to simulate the plastic hinges located in ends of beams and columns,fiber PMM hinge and bending moment hinge are defined as column plastic hinge and beam plastic hinge,respectively. Then the maximum inter-story displacement angle( ISDA) and maximum roof displacement angle( RDA) are selected as structural seismic demand parameters,and the corresponding damage states are defined. Furthermore,the seismic fragility analysis is conducted when the RC frame structure is subjected to eight earthquake ground motions,and the corresponding structural fragility curves are obtained. This method will provide a reference for future structural seismic performance evaluations.

引文

[1]于晓辉,吕大刚,王光远.土木工程结构地震易损性分析的研究进展[C]//第二届结构工程新进展国际论坛,2008.
    [2]H·Hwang,刘晶波.地震作用下钢筋混凝土桥梁结构易损性分析[J].土木工程学报,2004,37(6):47-51.
    [3]吕大刚,于晓辉,潘峰.基于改进云图法的结构概率地震需求分析[J].世界地震工程,2010,26(1):7-15.
    [4]吴巧云,朱宏平,樊剑.基于性能的钢筋混凝土框架结构地震易损性分析[J].工程力学,2012,29(9):117-124.
    [5]Schotanus M I J,Franchin P,Lupoi A,et al.Seismic fragility analysis of 3D structures[J].Structural Safety,2004,26(4):421-441.
    [6]Sasani M,Kiureghian A D.Seismic fragility of RC structural walls:displacement approach[J].Journal of Structural Engineering,2001,127(2):219-228.
    [7]GB 50011-2010,建筑抗震设计规范[S].
    [8]刘晶波,刘阳冰,闫秋实,等.基于性能的方钢管混凝土框架结构地震易损性分析[J].土木工程学报,2010,43(2):39-47.