Damage and collapses in industrial precast buildings after the 2012 Emilia earthquake
Damage and collapses in industrial precast buildings after the 2012 Emilia earthquake
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DOI：
10.1016/j.engstruct.2017.01.059
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发表时间：
2017-04
影响因子：
5.5
通讯作者：
M. Savoia;N. Buratti;Loris Vincenzi
中科院分区：
文献类型：
--
作者：
M. Savoia;N. Buratti;Loris Vincenzi
本文介绍了一个完整的和评论收集的情况下，损坏和倒塌的钢筋混凝土（RC）预制工业建筑，观察到的作者在一系列的实地调查后，北方意大利的2012年艾米利亚地震。它们是从总共约2000座工业钢筋混凝土预制建筑中挑选出来的，这些建筑的结构特征和损坏情况已被作者收集在一个大型数据库中，倒塌的主要原因是与意大利预制建筑的结构特征有关的脆弱性，这些建筑没有按照抗震标准设计。特别是，这些结构通常被建造为静定配置的整体元件（屋顶元件、主梁和次梁、柱）的组件。确定的最常见的故障原因是：预制整体元件之间没有机械连接器，结构元件与非结构墙的相互作用，柱弯曲能力不足，袖珍基础旋转，外部预制覆面墙与承重元件（柱和梁）连接不足，用作仓库或自动化存储设施的建筑物中的货架倾覆。
The present paper presents a complete and commented collection of cases of damage and collapse in reinforced concrete (RC) precast industrial buildings, observed by the authors during a series of field surveys after the 2012 Emilia earthquake in Northern Italy. They were selected among a total of about 2000 industrial RC precast buildings, whose structural characteristics and damage have been collected in a large database by the authors.The main causes of the collapses were vulnerabilities related to the structural characteristics of Italian precast buildings not designed with seismic criteria. In particular, these structures were typically built as an assembly of monolithic elements (roof elements, main and secondary beams, columns) in statically determinate configurations. The most common failure causes identified were: the absence of mechanical connectors between precast monolithic elements, the interaction of structural elements with non-structural walls, the insufficient column bending capacity, the rotation of pocket foundations, the inadequacy of connections of external precast cladding walls to bearing elements (columns and beams), the overturning of racks in buildings used as warehouses or in automated storage facilities.