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首页> 外文期刊>Bulletin of earthquake engineering >Fragility analysis of the nave macro-element of the Cathedral of Santiago, Chile
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Fragility analysis of the nave macro-element of the Cathedral of Santiago, Chile

机译：智利圣地亚哥大教堂的Nave宏观元素的脆弱性分析

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摘要

This paper presents the fragility analysis of a typical nave macro-element of the Metropolitan Cathedral of Santiago, Chile. The analysis is carried out by using the rigid body spring model approach, in which rigid elements are connected to each other by means of axial and shear springs. The 2D model generated is initially verified by comparing modes with a 3D finite element model previously calibrated in DIANA software. The methodology used in this study is based on a set of eleven real seismic records corresponding to four major earthquakes that have affected Santiago city. Nonlinear incremental dynamic analyses together with a damage index based on stiffness degradation, which considers the relation between shear at the base and deformation of the macro-element, are used to generate the fragility curves. As a result of this study, the probability of exceedance for different damage states has been obtained based on a possible peak ground acceleration of the site. In particular, the results of the study demonstrate that the proposed damage index satisfactorily describes the damage suffered by some of the nave transverse sections of the Cathedral after the 2010 Maule earthquake (PGA 2.11 m/s(2)-Santiago Centro station).
机译：本文介绍了智利圣地亚哥大都会大教堂的典型奈夫元素的脆弱性分析。通过使用刚体弹簧模型方法进行分析，其中刚性元件通过轴向和剪切弹簧彼此连接。最初通过比较使用先前在戴安达软件中校准的3D有限元模型的模式来验证所生成的2D模型。本研究中使用的方法基于一套对应于影响圣地亚哥市的四大地震的一套实际地震记录。基于刚度降解的非线性增量动态分析与基于刚度降级的损伤指数一起考虑剪切在宏观元件的剪切和变形之间的关系，用于产生脆弱曲线。由于本研究，基于该部位的可能的峰接地加速来获得超出不同损伤状态的可能性。特别是，研究结果表明，拟议的损伤指数令人满意地描述了2010年Maule地震（PGA 2.11 M / S（2）-Santiago Centro站）之后大教堂的一些横截面所遭受的损害。

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