DAMAGE AND DUCTILITY DEMAND SPECTRA ASSESSMENT OF HYSTERETIC DEGRADING SYSTEMS SUBJECT TO STOCHASTIC SEISMIC LOADS
DAMAGE AND DUCTILITY DEMAND SPECTRA ASSESSMENT OF HYSTERETIC DEGRADING SYSTEMS SUBJECT TO STOCHASTIC SEISMIC LOADS
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DOI：
10.1080/13632460609350612
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发表时间：
2006-09
影响因子：
2.6
通讯作者：
G. Marano;R. Greco
中科院分区：
文献类型：
--
作者：
G. Marano;R. Greco
在强烈地震事件下观察到的结构损伤现象是刚度和强度退化的结果。本文研究了用Bouc-Wen模型描述的滞回退化结构的损伤评估问题，该模型经过修正以反映强震引起的力学退化。为了考虑地震作用的随机性，采用随机方法进行分析，并对Park和Ang损伤函数进行随机评估。通过参数分析，分析了结构的力学特性和地震烈度测量参数对结构地震反应和破坏程度的影响。损伤谱最终得到，他们被用来开发，基于性能的抗震设计的基础上，延性需求谱。
Damage phenomena observed in structures subject to intense seismic events are the result of stiffness and strength degradation. This paper studies the damage assessment of hysteretic degrading structures described by means of the Bouc-Wen model, modified to represent the mechanical degradation induced by severe earthquakes. In order to consider randomness of seismic action, the analysis is performed by adopting a stochastic approach and the Park and Ang damage functional is also evaluated in stochastic way. A parametric analysis is carried out with the aim to analyse the effect of mechanical characteristics and measure parameters of earthquake intensity on seismic response and damage level. Damage spectra are finally obtained and they are used to develop, on the basis of the Performance Based Seismic Design, ductility demand spectra.