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首页> 外文期刊>Bulletin of earthquake engineering >Seismic performance of masonry residential buildings in Lorca's city centre, after the 11th May 2011 earthquake
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Seismic performance of masonry residential buildings in Lorca's city centre, after the 11th May 2011 earthquake

机译：2011年5月11日地震后，洛尔卡市中心的砌体住宅建筑物的抗震性能

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摘要

Lorca May 11, 2011 earthquake, whose magnitude and intensity reached Mw=5.1 and I=VII, caused heavy damages, showing the vulnerability of masonry historic buildings and reinforced concrete improper designed structures. The main objectives of this paper are to study the seismic response of unreinforced masonry residential building stock in Lorca historic centre and to compare it with the vulnerability and feasible collapse mechanisms predicted by the FaMIVE Method (D'Ayala and Speranza in Proceedings of 12th European conference of earthquake engineering. Elsevier Science Limited, London, 2002; Earthq Spectra 19(3):479-509, 2003), which has been proved to be accurate in the description and prediction of damages in this type of structures. For this purpose, three onsite surveys were carried out, in May, June and December 2011, on a sample of the masonry residential buildings in Lorca historic centre (area included in the Special Protection and Rehabilitation Plan of the Historic and Artistic Site of Lorca). Information regarding geometry, quality of materials, structure and construction characteristics was collected, establishing the observed collapse mechanisms and evaluating rigorously damage and crack patterns. Google Street View was used for the analysis of the state of the buildings before the earthquake. These buildings were then assessed and mapped using a GIS system. Results provided good accordance with the observed data, showing, at the same time, very different building seismic performance. Effective connections between fa?ades and party walls, a good maintenance level of masonry and roofs and the use of specific reinforcement elements have proved to be relevant factors in lowering the vulnerability and improving the seismic behaviour of unreinforced masonry structures in Lorca historic centre.
机译：洛尔卡（Lorca）2011年5月11日地震，震级和烈度分别达到Mw = 5.1和I = VII，造成了严重破坏，显示了砖石历史建筑和钢筋混凝土结构设计不当的脆弱性。本文的主要目的是研究洛尔卡历史中心未加固砌体住宅房屋的地震反应，并将其与通过FaMIVE方法预测的脆弱性和可行的坍塌机制进行比较（D'Ayala和Speranza在第十二届欧洲会议论文集中Elsevier Science Limited，伦敦，2002; Earthq Spectra 19（3）：479-509，2003），已被证明在描述和预测这类结构的破坏方面是准确的。为此，于2011年5月，6月和12月对洛尔卡历史中心的砖混住宅楼房进行了3次现场调查（该区域包括在洛尔卡历史和艺术遗址的特别保护和修复计划中） 。收集了有关几何形状，材料质量，结构和构造特征的信息，建立了观察到的坍塌机制并严格评估了破坏和裂缝模式。 Google Street View用于分析地震前建筑物的状态。然后使用GIS系统对这些建筑物进行评估和制图。结果提供了与观察到的数据良好的一致性，同时显示出非常不同的建筑物抗震性能。立面与宴会墙之间的有效连接，良好的砌体和屋顶维护水平以及使用特定的加固元件已被证明是降低洛尔卡历史中心非加固砌体结构的脆弱性和改善其抗震性能的相关因素。

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