作　　者： (吴文朋）; (李立峰）; (胡思聪）; (徐卓君）;

机构地区： 湘潭大学土木工程与力学学院,湖南湘潭411105 湖南大学土木工程学院,湖南长沙410082 工程结构动力学与可靠性分析湖南省高等学校重点实验室,湖南湘潭411105

出　　处： 《地震工程与工程振动》 2017年第4期85-96,共12页

摘　　要： 为了促进桥梁结构地震易损性分析在我国的发展和应用,详细论述了公路桥梁地震易损性分析方法在国内外的研究现状、存在的问题和发展方向。首先,对国内外常用的桥梁地震易损性分析方法进行分类,归纳了每种方法的适用性,总结了桥梁地震易损性研究在我国的发展历程和研究现状;其次,根据采用的参数估计方法的不同,将理论地震易损性函数分为四种类型,介绍了每种易损性函数的建立过程和优缺点。最后,指出了该领域尚且存在的一些问题和有待研究的方向。研究结果表明,易损性分析能很好地考虑桥梁抗震设计中存在的不确定性问题,对基于性能桥梁抗震设计的发展具有重要的意义。 To improve the development and application of the seismic fragility analysis for the highway bridges m China, the research status of the fragility analysis methods, the issues that still unsolved and the potential directions for future research were summarized in detail. Firstly, the fragility analysis methods which were widely adopted around the world were classified, in order to conclude the applicability of each method. Meanwhile, the development process and research status of the bridge fragility analysis in China were summed up. Then, based on the difference of the statistical methods, the theoretical fragility functions were categorized into four types. The development process, as well as the merit and demerit of each fragility function, were introduced in this study. Finally, the unsolved problems and the future investigation directions in this research field were indicated, it is concluded that the fragility analysis method can account for the uncertainty issues incorporated in seismic design of the bridges. It is of great significance for the development of the performance-based seismic design of the bridge.

关 键 词： 桥梁工程 地震 易损性分析 不确定性 分析方法