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首页> 外文期刊>Bulletin of earthquake engineering >Non-linear analysis of the Carmine bell tower under seismic actions accounting for soil-foundation-structure interaction
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Non-linear analysis of the Carmine bell tower under seismic actions accounting for soil-foundation-structure interaction

机译：地震作用核对土基 - 基础结构互动下的胭脂红钟塔的非线性分析

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摘要

The paper discusses the effect of the soil-foundation-structure interaction on the seismic assessment of the tallest monumental tower in Napoli under the historical earthquake which severely damaged the structure in 1456. To this aim, a detailed characterization of the soil, the foundation and the structure and an accurate definition of synthetic and recorded input motions were carried out. The effects on the non-linear response of the structure due to the soil compliance and the lateral restraint exerted by the surrounding buildings were firstly evaluated through non-linear static (push-over) analyses. The resulting capacity displacements were compared to the demand associated to the historical earthquake and computed through one dimensional seismic response analyses. A beneficial effect of the soil is shown on the seismic performance, when the lateral restraint is neglected. Non-linear dynamic analyses were later carried out on the complete soil-foundation-structural model, leading to the same failure mechanisms for the structure observed in the push-over analysis and, in some cases, the collapse of the foundation and the soil. Furthermore, an amplification of the acceleration was recognized below the foundation with respect to the free-field conditions. The results give the chance to compare the non-linear static and dynamic analyses taking into account the soil-foundation-structure interaction.
机译：本文讨论了土壤 - 基础结构相互作用对1456年结构严重破坏结构的历史地震下纳普利最高纪念塔的地震评价的影响。为此目的，对土壤，基础和地区的详细表征进行了合成和记录输入运动的结构和准确的定义。首先通过非线性静态（俯卧端）分析来评估由于土壤依从性和周围建筑物施加的横向约束的非线性响应的影响。将得到的产能位移与与历史地震相关的需求进行比较，并通过一维地震反应分析计算。当横向约束被忽略时，土壤的有益效果显示在地震性能上。稍后在完整的土对基础结构模型上进行非线性动态分析，导致相同的失效机制在推遍分析中观察到的结构，并且在某些情况下，基础和土壤的崩溃。此外，关于自由场条件，在基础下方识别加速度的扩增。结果赋予了考虑到土对基础结构相互作用的非线性静态和动态分析的机会。

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