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The Importance of Geotechnical Variability in the Analysis of Earthquake-induced Slope Deformations  

Kim, Jin-Man (Hyundai Institute of Construction Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.2, 2003 , pp. 123-133 More about this Journal
Abstract
A practical statistical approach that can be used to model various sources of uncertainty systematically is presented in the context of reliability analysis of slope stability. New expressions for probabilistic characterization of soil properties incorporate sampling and measurement errors, as well as spatial variability and its reduced variance due to spatial averaging. The stochastic nature of seismic loading is studied by generating a large series of hazard-compatible artificial motions, and by using them in subsequent response analyses. The analyses indicate that in a seismically less active region such as the Korean Peninsular, a moderate variability in soil properties has an effect as large as the characterization of earthquake hazard on the computed risk of slope failure and excessive slope deformations.
Keywords
Artificial ground motion; Earthquake; Probabilistic analysis; Slope deformation; Spatial variability;
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