当前位置: X-MOL 学术Int. J. Archit. Heritage › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Assessment of Seismic Retrofitting Interventions of a Masonry Palace Using Operational Modal Analysis
International Journal of Architectural Heritage ( IF 2.4 ) Pub Date : 2020-11-12 , DOI: 10.1080/15583058.2020.1836531
Angelo Aloisio 1 , Alessandro Di Pasquale 2 , Rocco Alaggio 1 , Massimo Fragiacomo 1
Affiliation  

ABSTRACT

The paper delivers a short report about the modal identification carried out on a historical masonry palace in the city centre of L’Aquila, Palazzo Pica Alfieri, retrofitted after the 2009 earthquake. A concise description of the damage pattern and the retrofitting interventions heads the presentation of the results of the dynamic identification using Operational Modal Analysis. The identified mode shapes and natural frequencies drive a discussion about the detectability and the assessment of the modifications induced by the structural interventions using low-vibration measurements. Differently from more uncomplicated structures, the production of a Finite Element model representative of an existing masonry complex requires considerable efforts: the masonry structure may not behave like a continuum, due to the presence of cracks and unknown structural discontinuities. Still, the results of the dynamic identification bestow valuable information about the structural behaviour from a qualitative viewpoint, even if not backed by a faithful FE model. The paper addresses the aspects possibly related to the dynamic identification of a monumental masonry building, based on the shreds of evidence arisen from the presented case study.



中文翻译:

使用运行模态分析评估砌体宫殿的抗震改造干预措施

摘要

这篇论文提供了一份关于在拉奎拉市中心一座历史悠久的砖石宫殿——Palazzo Pica Alfieri 上进行的模态识别的简短报告,该宫殿在 2009 年地震后进行了改造。对损坏模式和改造干预的简明描述是使用操作模态分析动态识别结果的介绍。确定的振型和固有频率推动了关于可检测性的讨论以及使用低振动测量对结构干预引起的修改进行评估。与更简单的结构不同,生成代表现有砌体复合体的有限元模型需要相当大的努力:砌体结构可能不像连续体,由于存在裂缝和未知的结构不连续性。尽管如此,即使没有忠实的有限元模型支持,动态识别的结果仍然从定性的角度提供了有关结构行为的有价值信息。本文根据所提出的案例研究中产生的证据,讨论了可能与巨大砖石建筑的动态识别相关的方面。

更新日期:2020-11-12
down
wechat
bug