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http://dx.doi.org/10.5000/EESK.2008.12.1.079

Comparison of Approximate Nonlinear Methods for Incremental Dynamic Analysis of Seismic Performance  

Bae, Kyeong-Geun (동아대학교 건축공학과 대학원)
Yu, Myeong-Hwa (동아대학교 건축공학과 대학원)
Kang, Pyeong-Doo (거창전문대학 건축과)
Kim, Jae-Ung (동아대학교 건축학부)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.1, 2008 , pp. 79-87 More about this Journal
Abstract
Seismic performance evaluation of structure requires an estimation of the structural performance in terms of displacement demand imposed by earthquakes on the structure. Incremental Dynamic Analysis(IDA) is a analysis method that has recently emerged to estimate structural performance under earthquakes. This method can obtained the entire range of structural performance from the linear elastic stage to yielding and finally collapse by subjecting the structure to increasing levels of ground acceleration. Most structures are expected to deform beyond the limit of linearly elastic behavior when subjected to strong ground motion. The nonlinear response history analysis(NRHA) among various nonlinear analysis methods is the most accurate to compute seismic performance of structures, but it is time-consuming and necessitate more efforts. The nonlinear approximate methods, which is more practical and reliable tools for predicting seismic behavior of structures, are extensively studied. The uncoupled modal response history analysis(UMRHA) is a method which can find the nonlinear reponse of the structures for ESDF from the pushover curve using NRHA or response spectrum. The direct spectrum analysis(DSA) is approximate nonlinear method to evaluate nonlinear response of structures, without iterative computations, given by the structural linear vibration period and yield strength from the pushover analysis. In this study, the practicality and the reliability of seismic performance of approximate nonlinear methods for incremental dynamic analysis of mixed building structures are to be compared.
Keywords
seismic performance; incremental dynamic analysis(IDA); direct spectrum analysis(DSA); uncoupled modal response history analysis(UMRHA);
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Times Cited By KSCI : 1  (Citation Analysis)
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