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Seismic Response Analysis at Multi-layered Ground During Large Earthquake  

김용성 (다이나믹 지오테크)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.4, 2002 , pp. 55-64 More about this Journal
Abstract
In the present study, in order to apply a cyclic viscoelastic-viscoplastic constitutive model to multi-layered ground conditions during large earthquake, the numerical simulations of the 1995 Hyogoken Nanbu Earthquake at Port Island, Kobe, Japan, were performed by the seismic response analysis. From the seismic response analysis, it was found that the acceleration calculated from the cyclic elasto-viscoplastic model and cyclic viscoelastic-viscoplastic models for clay was in close agreement with the recorded accelerations at the Port Island down-hole array, and the cyclic elastic-viscoplastic and viscoelastic-viscoplastic constitutive models showed little different behavior characteristics near clay layer. Thus, the propriety of viscoplastic model for clay was convinced. Therefore, it can be concluded that a cyclic viscoelastic-viscoplastic constitutive model can give a good description of the amplification and also it showed accurate damping characteristics of clay during large event which induces plastic deformation in large strain range.
Keywords
Coupled analysis; Constitutive model; FEM; Reclaimed ground; Seismic response;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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