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Cyclic Shear Strength of Anisotropically Consolidated Snnd  

Kim, Byung-Tak (Member, Senior Researcher, Coastal & harbor Engrg., Research Div., Korea Ocean Research & Development Institute)
Kim, Young-Su (Member, Professor, Dept. of Civil Engrg., Kyungpook National Univ.)
Seo, In-Shik (Member, Asociate Professor, Dept. of Civil Engrg., Kyngdong College of Techno-Information)
Jeong, Dong-Gil (Mass Transit & Railroads Dept., Seo Yeong Engrg. Co., LTD.)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.3, 2002 , pp. 73-85 More about this Journal
Abstract
This paper is focused on studying the undrained cyclic triaxial behavior of saturated Nak-dong River sand, using anisotropically consolidated specimens. A test of isotropically consolidated specimens was performed to compare the results of the anisotropically consolidated specimens. The cyclic shear stre3ngth of the sand under various combinations of initial static shear stress and relative density was considered. Failure was defined as a 5% double amplitude cyclic strain and a 5% residual axial strain for both reversal stress and no reversal stress conditions. Using this definition, the cyclic strength of the anisotropically consolidated specimens was affected by the initial static shear stress. For anisotropically consolidated Nak-dong River dense sand, the cyclic strength is greater than that of Toyolura silica sand but is smaller than that of Dogs Bay carbonate sand. By comparing the experimental and predictecl results, it was possible to predict the residual pore pressure of Nak-dong River sand using Hyodo's model with initial static shear stress subjected cyclic loading.
Keywords
Cyclic shear strength; Initial static shear stress; Liquefaction; Pore pressure; Sand; Triaxial test;
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