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JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)  2017, Vol. 51 Issue (11): 2197-2206    DOI: 10.3785/j.issn.1008-973X.2017.11.014
Civil and Traffic Engineering     
Method of failure mode evaluation of structure based on seismic resilience index
LI Ying-min1,2, YANG Long1, LIU Shuo-yu1, LUO Wen-wen3
1. College of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. Key Laboratory of New Technique for Construction of Cities in Mountain Area, Chongqing 400045, China;
3. School of Civil Engineering and Architecture, Chongqing University of science & technology, Chongqing 401331, China
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A resilience index, which can be used to evaluate the safety, economy, and recoverability of different failure modes was proposed in order to provide the decision-making basis of performance-based seismic design of structures. The calculation method and process of resilience index used for a single structure in a given earthquake intensity region were illustrated based on the seismic resilience of system. The seismic resilience indexes of RC frame structures, which were associated with five kinds of typical failure modes, were figured out through vulnerability analysis and resilience parameter analysis. The susceptibilities of seismic resilience indexes to seismic resilience parameters were analyzed, A modified calculation method of seismic resilience indexes of structure in a given earthquake intensity region was proposed. Results demonstrate that the factors related to seismic damage of structure are comprehensively covered by seismic resilience index, and the resilience (safety, economy, and recoverability) of structure is reflected by this index. The resilience of structures associated with different failure modes are separated obviously from each other by the modified indexes. The results of modified indexes conform to the qualitative judgment for the performances associated with different failure modes in existing researches.

Received: 25 August 2016      Published: 13 November 2017
Cite this article:

LI Ying-min, YANG Long, LIU Shuo-yu, LUO Wen-wen. Method of failure mode evaluation of structure based on seismic resilience index. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(11): 2197-2206.

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为了对基于性能的结构抗震设计提供决策依据,提出可恢复指标对结构不同损伤机制的安全、经济和可恢复性进行对比评价.以体系恢复力(resilience of system)为基础,阐述给定烈度区下单体结构可恢复指标的计算方法和流程;对5种典型损伤机制的RC框架结构,进行易损性分析和恢复力参数计算,得到结构可恢复指标;分析可恢复指标对各主要恢复力参数的敏感性,提出修正的给定烈度区下结构可恢复指标计算方法.结果表明:可恢复指标能够较全面地涵盖结构地震损失相关因素,体现结构的恢复力(即安全、经济和可恢复性);修正的结构可恢复指标能够较好地区分各损伤机制的恢复力,符合已有研究对各损伤机制优劣的定性判别.

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