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Numerical models for the seismic assessment of an old masonry tower

机译：砌体塔抗震评估的数值模型

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摘要

The present paper describes the seismic assessment of the Qutb Minar in Delhi, India. Three models with different levels of complexity and simplification were developed. The use of these models allows one to overcome the complexity of the study of the seismic behavior of ancient masonry structures;by combining the results of the different models it is possible to obtain a better and more comprehensive interpretation of the seismic behavior. The models were used for non-linear static (pushover) and nonlinear dynamic analyses. The static and dynamic analyses give different behaviors, indicating that the push-over analysis should be used carefully in the seismic assessment of masonry structures. For the static analysis, the base of the tower is the most vulnerable part;while according to the dynamic analysis, it is the upper part of the tower. This last behavior is according to the historical damage suffered by the tower due to earthquakes. The different behaviors can be explained by the influence of the higher modes of vibration.
机译：本文介绍了印度德里库特卜塔的地震评估。开发了三种具有不同程度的复杂性和简化性的模型。这些模型的使用使人们可以克服研究古代砌体结构地震行为的复杂性；通过结合不同模型的结果，有可能获得更好，更全面的地震行为解释。该模型用于非线性静态（推动）和非线性动态分析。静态和动态分析给出了不同的行为，这表明推倒分析应在砌体结构的地震评估中谨慎使用。对于静态分析，塔架的底部是最脆弱的部分；而根据动态分析，塔架的上部是最脆弱的部分。最后的行为是根据塔由于地震而遭受的历史损坏而得出的。不同的行为可以通过较高振动模式的影响来解释。

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  • 来源
    《Engineering Structures》 |2010年第5期|p.1466-1478|共13页
  • 作者

    Fernando Pena; Paulo B. Lourenco; Nuno Mendes; Daniel V. Oliveira;

  • 作者单位

    Instituto de Ingenieria, Universidad National Autonoma de Mexico, Edificio 2-401, Circuito Escolar, Ciudad Universitaria, 04510 Mexico city, Mexico;

    University of Minho, Department of Civil Engineering, ISISE, Campus Azurem, 4800-058 Guimaraes, Portugal;

    University of Minho, Department of Civil Engineering, ISISE, Campus Azurem, 4800-058 Guimaraes, Portugal;

    University of Minho, Department of Civil Engineering, ISISE, Campus Azurem, 4800-058 Guimaraes, Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dynamics; non-linear analysis; pushover; tower; rigid elements;

    机译：动力学;非线性分析;推倒塔;刚性元素;

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