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Empirical damage and liquefaction fragility curves from 2012 Emilia earthquake data
Earthquake Spectra ( IF 5 ) Pub Date : 2020-02-26 , DOI: 10.1177/8755293019891713
Marco Di Ludovico 1 , Anna Chiaradonna 2 , Emilio Bilotta 2 , Alessandro Flora 2 , Andrea Prota 1
Affiliation  

The study focuses on the effects of liquefaction on structures taken from data on about 1000 private residential masonry buildings located in several municipalities struck by the 2012 Emilia earthquake. Survey data were collected by teams of experts coordinated by the Italian Department of Civil Protection in the immediate post-earthquake emergency phase. They included information on building characteristics and the level and extent of the damage to structural and non-structural components. Furthermore, according to data related to the reconstruction process, information on the liquefaction-induced type and extent of the damage was also collected. Through a comparative analysis of the empirical damage, it was found that liquefaction strongly affected the buildings, confirming its relevance in the damage scenario under specific subsoil conditions. Based on this evidence, the article proposes a correlation between structural damage and liquefaction when it comes to deriving proper preliminary empirical fragility curves. A suitable parameter to define liquefaction effects at ground level is introduced and correlated to damage grades defined according to the European Macroseismic Scale: EMS-98.

中文翻译:

来自 2012 年艾米利亚地震数据的经验损伤和液化脆性曲线

该研究的重点是液化对结构的影响,这些数据来自位于 2012 年艾米利亚地震袭击的几个城市的约 1000 座私人住宅砖石建筑的数据。调查数据由意大利民防部在震后紧急阶段协调的专家小组收集。它们包括有关建筑特征以及结构和非结构部件损坏程度和程度的信息。此外,根据与重建过程相关的数据,还收集了有关液化引起的损坏类型和程度的信息。通过对经验损害的比较分析,发现液化对建筑物产生了强烈影响,证实了其在特定底土条件下的损害情景中的相关性。基于这一证据,本文在推导适当的初步经验脆性曲线时提出了结构损坏和液化之间的相关性。引入了定义地面液化效应的合适参数,并将其与根据欧洲宏观地震等级:EMS-98 定义的损坏等级相关联。
更新日期:2020-02-26
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