期刊
ENGINEERING STRUCTURES
卷 45, 期 -, 页码 472-480出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2012.07.002
关键词
Spectral shape; Maximum inter-story drift; Energy-based damage index
资金
- El Consejo Nacional de Ciencia y Tecnologia CONACYT, La Universidad Autonoma de Sinaloa [PROFAPI 2011/029]
- DGAPA (PAPIIT)-UNAM
Seismic fragility of steel frames subjected to narrow-band motions from soft-soils of Mexico City (Mexico) is evaluated by means of a set of vector-valued ground motion intensity measures (IMs) comprised of two parameters. All the vectors considered have, as the first component, spectral acceleration at the first mode of the structure. As the second component, compared IMs are chosen among peak and integral parameters, the former represent the spectral shape in a range of periods, while the latter refer to cumulative damage potential of earthquakes. The maximum inter-story drift and an energy-based damage index for steel frames are employed as engineering demand parameters for structural performance assessment. As a result of the comparison, it is observed that spectral-shape-based vector-valued IMs have the best explicative power with respect to seismic fragility estimation. Analyses, even if limited to the peculiar ground motions considered, suggest that a recently proposed parameter (No) is especially promising as a candidate for the next generation of IMs when combined with spectral acceleration. This appears independent of the type of seismic response measure considered. (C) 2012 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据