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首页> 外文期刊>Bulletin of earthquake engineering >Damage classification and derivation of damage probability matrices from L'Aquila (2009) post-earthquake survey data
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Damage classification and derivation of damage probability matrices from L'Aquila (2009) post-earthquake survey data

机译：L'Aquila（2009）后地震调查数据损害损伤概率矩阵的损害分类和推导

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摘要

Post-earthquake damage data represent an invaluable source of information for the seismic vulnerability assessment of the exposed building stock, as they are a direct evidence of the actual buildings' performance under real seismic events. This paper exploits a robust and homogeneous database of damage data collected after the 2009 L'Aquila (Italy) earthquake, to derive damage probability matrices for several building typologies representative of the Italian building stock. To this aim, the first part of the work investigates several issues related to the definition of damage to be associated with each inspected building. Different approaches and damage conversion rules are applied, pointing out advantages and weaknesses of each one. Considering the widespread seismic damage observed on masonry infill panels and partitions of reinforced concrete constructions, the impact of this type of non-structural damage on empirical damage and functional loss distributions is explored. The second part of the study proposes different possible interpretations of the repartition of the observed damage in the different damage levels, showing in some cases a bimodal trend. Two novel hybrid procedures are outlined and compared with the classical binomial approach for predicting the subdivision of damage in the different levels. The application of the proposed methodologies to the different building typologies allows the selection, for each one, of the method providing the best fit to empirical results. The parameters required for the application of the optimal approach are reported in the paper, so that results can be used for forecasting the expected seismic damage in sites with similar seismic hazard and exposed buildings.
机译：震后损伤数据是暴露建筑群地震易损性评估的宝贵信息来源，因为它们是真实地震事件下实际建筑性能的直接证据。本文利用2009年意大利拉奎拉（L’Aquila）地震后收集的损伤数据的稳健同质数据库，推导出代表意大利建筑存量的几种建筑类型的损伤概率矩阵。为此，工作的第一部分调查了与每栋被检查建筑相关的损害定义相关的几个问题。采用了不同的方法和损伤转换规则，指出了每种方法的优缺点。考虑到在钢筋混凝土结构的砌体填充板和隔墙上观察到的广泛地震损伤，探讨了此类非结构性损伤对经验损伤和功能损失分布的影响。该研究的第二部分提出了不同损伤水平下观察到的损伤重新划分的不同可能解释，在某些情况下显示出双峰趋势。概述了两种新的混合方法，并与经典的二项式方法进行了比较，以预测不同级别的损伤细分。将建议的方法应用于不同的建筑类型，可以为每种类型选择最适合实证结果的方法。本文报告了应用最优方法所需的参数，以便将结果用于预测具有类似地震危险性的场地和裸露建筑物的预期震害。

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