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http://dx.doi.org/10.5000/EESK.2010.14.4.023

Inelastic Displacement Ratio for Strength-limited Bilinear SDF Systems  

Han, Sang-Whan (한양대학교 건축공학과)
Lee, Tae-Sub (한양대학교 대학원)
Seok, Seung-Wook (한양대학교 대학원)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.14, no.4, 2010 , pp. 23-28 More about this Journal
Abstract
This study evaluated the effect of vibration, level of lateral yielding strength, site conditions, ductility factor, strain-hardening ratio, and post-capping ratio of the strength limited bilinear SDF systems on the inelastic displacement ratio. The nonlinear response history analysis was conducted using 240 ground motions which were collected at the sites classified as site classes B, C, and D according to the NEHRP. To account for the P-$\Delta$ effects, this study considered negative stiffness ratios ranging from -0.1 to -0.5 of elastic stiffness. Four different damping ratios are used: 2, 5, 10, and 20%. From this study, an equation of inelastic displacement ratio was proposed using nonlinear regression analysis.
Keywords
Strength-limited SDF system; Inelastic displacement ratios; Performance-based design; Nonlinear regression;
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