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http://dx.doi.org/10.5000/EESK.2008.12.1.011

Failure Probability of Nonlinear SDOF System Subject to Scaled and Spectrum Matched Input Ground Motion Models  

Kim, Dong-Seok (서울대학교 건설환경공학부)
Koh, Hyun-Moo (서울대학교 건설환경공학부)
Choi, Chang-Yeol (서울대학교 건설환경공학부)
Park, Won-Suk (서울대학교 교량설계핵심기술연구단)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.1, 2008 , pp. 11-20 More about this Journal
Abstract
In probabilistic seismic analysis of nonlinear structural system, dynamic analysis is performed to obtain the distribution of the response estimate using input ground motion time histories which correspond to a given seismic hazard level. This study investigates the differences in the distribution of the responses and the failure probability according to input ground motion models. Two types of input ground motion models are considered: real earthquake records scaled to specified intensity level and artificial input ground motion fitted to design response spectrum. Simulation results fir a nonlinear SDOF system demonstrate that the spectrum matched input ground motion produces larger failure probability than those of scaled input ground motion due to biased responses. Such tendency is more remarkable in the site of soft soil conditions. Analysis results show that such difference of failure probability is due to the conservative estimation of design response spectrum in the range of long period of ground motion.
Keywords
time history analysis; nonlinear SDOF system; failure probability; scaled input ground motion; spectrum matched input ground motion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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