地下结构地震易损性研究进展

Recent Advance in Seismic Fragility Research of Underground Structures

为了促进国内地下结构地震易损性分析的发展和应用,详细评述了地下结构地震易损性分析在国内外研究现状、存在的问题和未来发展方向。首先,介绍了地震易损性的定义,总结了破坏指标、地震动强度参数的选取以及不确定性的影响,归纳了常用的2种地下结构易损性曲线建立方法。依据不同来源的分析数据,介绍了5种国内外常用的地下结构地震易损性分析方法,归纳了每种方法的适用性及优缺点。最后,分析了当前研究中遇到的问题以及存在的局限性,对地下结构地震易损性研究的发展方向进行了展望。

In order to facilitate the development and application of the seismic fragility analysis of underground structures in China,this paper presents a review of recent advance in seismic fragility research of underground structures,the existing issues and future tendency of this research topic are also discussed.Firstly,the definition of seismic fragility is described.Then,the selection of damage measure and intensity measure,as well as the effect of uncertainties,are discussed respectively.Two most widely-used methods for the construction of fragility curves in underground structures are introduced later.Based on the different sources of analysis data for the fragility analysis,five common used seismic fragility analysis methods for underground structures were summarized,and their applicability are also presented.Finally,the existing issues and the future tendency of seismic fragility analysis of underground structures are discussed.