RECENT ADVANCES IN DYNAMIC INVESTIGATION OF LEANING TOWER OF PISA

C. Nuti, G. Fiorentino
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Abstract

The Leaning Bell Tower of Pisa has been included in the list of the World Heritage Sites by United Nations Educational, Scientific and Cultural Organization since 1987. Over the last twenty years, the Tower has successfully undergone a number of interventions to reduce its inclination. Despite its importance in the Italian cultural heritage, no studies about the dynamic behaviour of this monument had been carried out until the 1990s. Starting from the results obtained by the Committee for the Safeguard of the Tower, a novel investigation campaign about the dynamic parameters characterising the Tower has begun in 2014. This paper aims at discussing the main results obtained until today. After a short history of the construction and of the interventions on the Tower, the following topics are discussed: a review of historical seismicity, dynamic identification, definition of seismic input, site response analysis, and seismic response accounting for soil-structure interaction. The studies made on the Tower highlight the importance of soil-structure interaction in the survival of the Tower due to strong seismic events since the middle ages.
比萨斜塔动力学研究进展
比萨斜塔于1987年被联合国教科文组织列入世界文化遗产名录。在过去的二十年里,塔楼成功地经历了许多干预措施,以减少其倾斜度。尽管它在意大利文化遗产中的重要性,但直到20世纪90年代才对这座纪念碑的动态行为进行了研究。从塔楼保护委员会获得的结果开始,一项关于塔楼动态参数特征的新颖调查活动已于2014年开始。本文旨在讨论迄今为止取得的主要成果。在简短的建筑历史和对塔的干预之后,讨论了以下主题:历史地震活动的回顾,动力识别,地震输入的定义,现场反应分析,以及土-结构相互作用的地震反应计算。对这座塔的研究强调了中世纪以来由于强烈地震事件,土-结构相互作用对这座塔的生存的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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