大跨斜腿刚构桥地震易损性分析

英文篇名：Seismic Fragility Analysis of Long Span Continuous Rigid Frame Bridges
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：郑成龙 ; 龙晓鸿 ; 彭元诚 ; 姜维 ; 廖萍
英文作者：ZHENG Cheng-long1 ; LONG Xiao-hong1 ; PENG Yuan-cheng2 ; JIANG Wei1 ; LIAO Ping3 (1.a.School of Civil Engineering and Mechanics ; b.Hubei Key Laboratory of Contr ol Structure ; Huazhong University of Science and Technology ; Wuhan 430074 ; China ; 2.CCC Second Highway Consultants Co Ltd ; Wuhan 430056 ; China ; 3.Jangsu Pan Pacific(Maunsell) Architectural and Engineering Design Co Ltd ; Wux i 214005 ; China)
中文关键词：地震 ; 连续刚构 ; 有限元 ; 易损性曲线 ; 曲率延性
英文关键词：seismic ; continuous rigid frame bridges ; finite element ; fragility curve ; curvature ductility
出版日期：2011-09-15
机构：华中科技大学土木工程与力学学院;华中科技大学控制结构湖北省重点实验室;中交第二公路勘察设计研究院有限公司;江苏泛亚联合建筑设计有限公司;
年：2011
期：03
出版单位：土木工程与管理学报

摘要

针对北盘江预应力混凝土连续刚构桥给出了桥梁易损性曲线的系统性分析方法。采用有限元分析软件SAP2000_V14进行有限元模拟及对每个地震-桥梁样本进行非线性时程分析,建立了以PGA为变量的结构需求概率函数。根据地震作用下塑性铰的曲率延性指标进行抗震性能水准划分,给出了桥梁结构的易损性曲线,从而为桥梁结构基于性能的抗震设计提供基础,对实际工程抗震能力评价有一定的借鉴意义。
This paper presents the results of an analytical sei sm ic fragility analysis of Beipanjiang concrete continuous rigid frame bridge.A n onlinear time history response analysis by SAP2000_V14 is performed for each ear thquake-bridge sample to establish the probabilistic characteristics of structu ral demand as a function of peak ground acceleration(PGA).Furthermore,bridge d amage states are defined by curvature ductility ratio and the results are displa yed as fragility curves,thus providing a basis for performance-based seismic d esign of bridge,and has certain reference significance for the evaluation of se ismic capacity of bridges.

引文

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