建筑结构地震易损性研究综述及展望

Research review and prospect of seismic vulnerability analysis for building structure

基于性能的建筑结构地震易损性分析是评估建筑结构的抗震可靠度的基础,对建筑结构的震害预测,乃至建立以可靠度理论为基础的抗震设计规范皆具有重要意义.为促进我国现阶段建筑结构地震易损性分析理论的应用和发展,文中对建筑结构地震易损性分析方法、国内外的研究现状以及该领域尚存在的问题进行了较为全面的综述.首先,将建筑结构地震易损性分析方法进行了归类,总结出每种方法各自的适用特点及其优劣性,并详细论述了国内外目前在该领域的研究进展;然后,指出如何合理评估并准确量化各类不确定性对地震易损性预测精度的影响是结构地震易损性理论研究所面对的挑战之一;最后,结合当前我国在地震易损性研究领域尚存在的问题,提出今后进一步的研究方向.

Performance-based seismic vulnerability analysis of building structure is the basis for assessing the seismic reliability of building structure.It is of great significance to prediction and evaluation of building structure′s seismic damage and even the establishment of seismic design codes based on reliability.In order to promote the application and development of seismic vulnerability theory of building structure in China,this paper gives a comprehensive overview of the seismic vulnerability analysis methods of building structure,their research status at home and abroad,and their existing problems.Firstly,the seismic vulnerability analysis methods of building structure were classified,and the advantages,disadvantages and applicability of each method were summarized.At the same time,the research progress in this field at home and abroad was discussed in detail.Then,it pointed out one of the biggest challenges in the current seismic vulnerability analysis:rationally assess and accurately quantify the impact of various uncertainties on the accuracy of vulnerability prediction.Finally,combined with the current problems in the field of seismic vulnerability research in China,this paper proposed further research directions in the future.