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首页> 外文期刊>Bulletin of earthquake engineering >Damage assessment of modern masonry buildings after the L'Aquila earthquake
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Damage assessment of modern masonry buildings after the L'Aquila earthquake

机译：L'Aquila地震后现代砌体建筑的伤害评估

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This paper deals with the structural behaviour and the damage assessment of Italian "modern" masonry buildings during seismic events. "Modern" masonry buildings are characterized by a box-like structural behaviour, due to the presence of effective connections between horizontal floors and vertical load-bearing walls, which prevents local mechanisms such as the overturning of external facades during earthquakes. "Modern" masonry buildings were built in Italy since the first decades of XX century in those regions classified as seismic zone and since 1937 in the whole country, following the Italian code prescriptions that implicitly interdicted the erection of "ancient" masonry buildings. Starting from an in deep historical analysis of the Italian seismic codes' prescriptions for the design of "modern" masonry buildings, the typical characteristics of the most frequent structural typologies of unreinforced masonry buildings are outlined. Then, the typical damage mechanisms observed in "modern" masonry buildings damaged after the L'Aquila earthquake (2009) are reported in relation with both the global and local behaviour of the whole building and its structural elements. The analysis demonstrated that "modern" masonry buildings experienced a good box-like seismic performance, which avoided global or local collapses, but shown severe damage to piers and spandrels related to their reduced in-plane shear capacity. Given the lack of data on such kind of structural typology, this study is fundamental for understanding and modelling the seismic behaviour of "modern" masonry buildings designed before '80s according to different seismic design prescriptions and for defining effective strengthening solutions for reducing their seismic vulnerability.
机译：本文涉及地震事件中意大利“现代”砌体建筑的结构行为和损害评估。 “现代”砌体建筑的特点是一种盒状结构行为，因为水平地板和垂直承载墙之间存在有效的连接，这可以防止局部机制如地震期间的外部外墙翻转。 “现代”砌体建筑是在意大利建造的，自XX世纪在被归类为地震区和1937年以来，在全国范围内的意大利代码处于隐含地阻碍了“古代”砌体建筑物的意大利规范处方。从IN的意大利地震代码的深度历史分析开始，概述了未原始的砌体建筑物最常见的结构类型的典型特征。然后，在L'Aquila地震（2009）损坏的“现代”砌体建筑中观察到的典型损伤机制与整个建筑物的全球和地方行为及其结构元素有关。分析表明，“现代”砌体建筑经历了良好的盒状地震性能，避免了全球或局部坍塌，但对与平面降低的面内剪切容量有关的码头和弯曲造成严重损坏。鉴于缺乏关于这种结构类型的数据，这项研究是理解和建模在80年代以80年代设计的“现代”砌体建筑的地震行为的基础，并根据不同的地震设计处方，为减少其抗震脆弱性来定义有效的加强解决方案。

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