Vulnerability Analysis for Steel Frame Structure Due to Strong Earthquakes

Long He Xu; Xu Shan; Zhong Xian Li

doi:10.4028/www.scientific.net/AMM.90-93.1486

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Vulnerability Analysis for Steel Frame Structure...

Vulnerability Analysis for Steel Frame Structure Due to Strong Earthquakes

Abstract:

To evaluate the damage level of steel structure under different earthquakes, a kind of vulnerability analysis method based on seismic damage assessment was developed using the improved two-parameter damage model which was proposed by considering the effect of hysteretic deformation amplitude to accumulative damage energy dissipation. This method is firstly to establish large samples of earthquake-structure, conduct a series of dynamic analysis to obtain the probability function of structural response and bearing capacity corresponding to different damage states, and then to draw the vulnerability curves and evaluate the damage state of the structure under different earthquake intensity. As a numerical example, a 9-story steel benchmark structure model under strong earthquakes was analyzed, and the theoretical vulnerability curves with lognormal distribution were obtained and the exceeding probability of structure at different damage level had been assessed.

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Periodical:

Applied Mechanics and Materials (Volumes 90-93)

Pages:

1486-1489

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.90-93.1486

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Online since:

September 2011

Authors:

Long He Xu, Xu Shan, Zhong Xian Li

Keywords:

Damage Assessment, Damage Model, Steel Frame Structure, Vulnerability Analysis

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