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An Experimental Study for the Liquefaction Resistance Strength of Saturated Sand Using Real Earthquake Loading  

심재욱 (연세대학교 공과대학 토목공학과)
박근보 (연세대학교 공과대학 토목공학과)
최재순 (연세대학교 공과대학 토목공학과)
김수일 (연세대학교 공과대학 토목공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.4, 2002 , pp. 329-337 More about this Journal
Abstract
Based on the equivalent uniform stress concept presented by Seed and Idriss, sinusoidal cyclic loads which simplified the earthquake loads have been applied in evaluating the liquefaction resistance strength experimentally. However, the liquefaction resistance strength of soil based on the equivalent uniform stress concept can not exactly reflect the dynamic characteristics of the irregular earthquake motion. In this study, the criterion of the liquefaction resistance strength was determined by applying real earthquake loading to the cyclic triaxial test. From the test results, relationships between liquefaction behaviors of saturated sand and earthquake characteristics such as magnitude or time-duration were determined. Magnitude scaling factors to determine the soil liquefaction resistance strength in seismic design were also proposed.
Keywords
Duration; Earthquake loading; Liquefaction resistance strength; Magnitude;
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