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首页> 外文期刊>International Journal of Sustainable Materials and Structural Systems >Estimation of the natural periods of existing masonry towers through empirical procedure
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Estimation of the natural periods of existing masonry towers through empirical procedure

机译：通过经验法估算现有砌体塔的自然周期

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The study and assessment of the seismic behaviour of structures, in terms of their dynamic properties, is mainly based on an accurate estimation of their modal properties and the fundamental period of vibration. In the case of historical structures, the accuracy of numerical analysis is critical because interventions have to be carefully calibrated in order to limit their invasiveness. We can obtain structural modal properties with an eigenvalue analysis of its mechanical model or with empirical correlations based on geometric parameters. The above mentioned sensitivity analysis was based on the eigenvalue problem for a Timoshenko beam. The final objective of analyses here described was the quantitative assessment of relevant geometric and mechanical parameters influence on the dynamic response of historical masonry towers in view of the development of a formulation for the prediction of the fundamental period as a function of the height.
机译：就结构的动态特性而言，对结构的地震行为的研究和评估主要基于对模态特性和基本振动周期的准确估计。对于历史结构，数值分析的准确性至关重要，因为必须仔细校准干预措施以限制其侵入性。我们可以通过对其力学模型的特征值分析或基于几何参数的经验相关性来获得结构模态特性。上面提到的灵敏度分析是基于Timoshenko光束的特征值问题。此处描述的分析的最终目的是，鉴于预测基本周期随高度变化的公式的发展，对有关几何和机械参数对历史砌体塔的动力响应的影响进行定量评估。

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