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http://dx.doi.org/10.5000/EESK.2008.12.6.065

Cyclic Hardening and Degradation Effects on Site Response during an Earthquake  

Lee, Jin-Sun (소방방재청)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.6, 2008 , pp. 65-71 More about this Journal
Abstract
A one-dimensional site response analysis program (KODSAP) was developed using cyclic soil behavior model by using the modified parallel IWAN model. The model is able to predict the cyclic hardening and degradation of soil through the adjustment of the internal slip stresses of its elements beyond the cyclic threshold, and satisfies Bauschinger's effect and the Masing rule in terms of its own behavior characteristics. The program (KODSAP) used the direct integration method in the time domain. The elasticity of the base rock was considered as a viscous damper boundary condition. The effects of cyclic hardening or degradation of soil on site response analysis were evaluated through parametric studies. Three types of analyses were performed to compare the effect of analysis and cyclic parameter on site response. The first type was equivalent linear analysis, the second was nonlinear analysis, and a third was nonlinear analysis using the cyclic hardening or degradation model.
Keywords
site response analysis; cyclic hardening; cyclic degradation; IWAN model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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