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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Loss estimation for non-ductile reinforced concrete building in Victoria, British Columbia, Canada: effects of mega-thrust M(w)9-class subduction earthquakes and aftershocks
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Loss estimation for non-ductile reinforced concrete building in Victoria, British Columbia, Canada: effects of mega-thrust M(w)9-class subduction earthquakes and aftershocks

机译：加拿大不列颠哥伦比亚省维多利亚市非延性钢筋混凝土建筑的损失估计：大推力M（w）9级俯冲地震和余震的影响

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摘要

This paper presents, within the performance-based earthquake engineering framework, a comprehensive probabilistic seismic loss estimation method that accounts for main sources of uncertainty related to hazard, vulnerability, and loss. The loss assessment rigorously integrates multiple engineering demand parameters (maximum and residual inter-story drift ratio and peak floor acceleration) with consideration of mainshock-aftershock sequences. A 4-story non-ductile reinforced concrete building located in Victoria, British Colombia, Canada, is considered as a case study. For 100 mainshock and mainshock-aftershock earthquake records, incremental dynamic analysis is performed, and the three engineering demand parameters are fitted with a probability distribution and corresponding dependence computed. Finally, with consideration of different demolition limit states, loss assessment is performed. From the results, it can be shown that when seismic vulnerability models are integrated with seismic hazard, the aftershock effects are relatively minor in terms of overall seismic loss (1-4% increase). Moreover, demolition limit state parameters, uncertainties of collapse fragility, and non-collapse seismic demand prediction models have showed significant contribution to the loss assessment. The seismic loss curves for the reference case and for cases with the varied parameters can differ by as large as about 150%. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：本文在基于性能的地震工程框架内提出了一种综合的概率地震损失估算方法，该方法考虑了与危险，脆弱性和损失有关的不确定性的主要来源。损失评估严格考虑了主震-余震序列，综合了多个工程需求参数（最大和剩余层间漂移比以及峰值地面加速度）。案例研究位于加拿大英属哥伦比亚维多利亚的4层非延性钢筋混凝土建筑。对于100次主震和主震-余震地震记录，进行了增量动力分析，并且对三个工程需求参数拟合了概率分布并计算了相应的依存关系。最后，考虑到不同的拆除极限状态，进行损失评估。从结果可以看出，将地震易损性模型与地震危险性进行集成时，就整体地震损失而言，余震影响相对较小（增加1-4％）。此外，拆除极限状态参数，坍塌脆弱性的不确定性和非塌陷地震需求预测模型对损失评估具有重要意义。对于参考案例和参数变化的案例，地震损失曲线可能相差约150％。版权所有（c）2015 John Wiley＆Sons，Ltd.

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