Seismic response and ambient vibrations of a Mediaeval Tower in the Mugello area (Italy)

IF 3.6 2区 工程技术 Q1 ENGINEERING, CIVIL Journal of Civil Structural Health Monitoring Pub Date : 2024-07-01 DOI:10.1007/s13349-024-00824-7
R. M. Azzara, V. Cardinali, M. Girardi, C. Padovani, D. Pellegrini, M. Tanganelli
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Abstract

This paper describes the experimental campaigns on the Tower of the Palazzo dei Vicari in Scarperia, a village in the Mugello area (Tuscany) exposed to high seismic hazards. The first campaign was carried out from December 2019 to January 2020, and the Tower underwent the so-called Mugello seismic sequence, which featured an M 4.5 earthquake. Other ambient vibration tests were repeated in June 2021 and September 2023 when another seismic sequence struck the area near Scarperia. These tests aimed to characterise the Tower’s dynamic behaviour under ambient and seismic excitations and check the response of the Tower over time. The experimental results were then used to calibrate a finite-element model of the Tower and estimate its seismic vulnerability. Several numerical simulations were conducted on the calibrated model using the NOSA-ITACA code for nonlinear structural analysis of masonry buildings. The dynamic behaviour of the Tower subjected to a seismic sequence recorded in 2023 by a seismic station at the base was investigated by comparing the velocities recorded along the Tower’s height with their numerical counterparts. Furthermore, several pushover analyses were conducted to investigate the collapse of the Tower as the load’s distribution and direction varied.

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意大利穆杰罗地区一座中世纪塔楼的地震响应和环境振动
本文介绍了在斯卡佩里亚的维卡里宫塔上开展的实验活动,斯卡佩里亚是穆杰罗地区(托斯卡纳)的一个村庄,地震危险性很高。第一次试验于 2019 年 12 月至 2020 年 1 月进行,该塔经历了所谓的穆杰罗地震序列,其中包括一次 M 4.5 级地震。2021 年 6 月和 2023 年 9 月,当斯卡佩里亚附近地区再次发生地震时,又重复进行了其他环境振动测试。这些测试旨在确定塔楼在环境和地震激励下的动态特性,并检查塔楼随时间变化的反应。实验结果随后被用于校准铁塔的有限元模型,并估算其地震脆弱性。使用 NOSA-ITACA 代码对校准后的模型进行了多次数值模拟,该代码用于砌体建筑的非线性结构分析。通过比较铁塔高度沿线记录的速度与数值模拟结果,研究了铁塔在 2023 年由底部地震台站记录的地震序列中的动态行为。此外,还进行了多次推移分析,以研究铁塔在荷载分布和方向变化时的倒塌情况。
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来源期刊
Journal of Civil Structural Health Monitoring
Journal of Civil Structural Health Monitoring Engineering-Safety, Risk, Reliability and Quality
CiteScore
8.10
自引率
11.40%
发文量
105
期刊介绍: The Journal of Civil Structural Health Monitoring (JCSHM) publishes articles to advance the understanding and the application of health monitoring methods for the condition assessment and management of civil infrastructure systems. JCSHM serves as a focal point for sharing knowledge and experience in technologies impacting the discipline of Civionics and Civil Structural Health Monitoring, especially in terms of load capacity ratings and service life estimation.
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