YIELD STRENGTH RATIO AND LIQUEFACTION ANALYSIS OF SLOPES AND EMBANKMENTS

This paper proposes a procedure to evaluate the triggering of liquefaction in ground subjected to static shear stress using a yield strength ratio defined herein. 30 liquefaction flow failures were back analyzed to evaluate shear strengths and strength ratios mobilized at the triggering of liquefaction. Strength ratios mobilized during the static liquefaction flow failures ranged from ~0.24 to 0.30 and are correlated to corrected cone and standard penetration resistances. These yield strength ratios and previously published liquefied strength ratios are used to develop a comprehensive liquefaction analysis for ground subjected to a static shear stress. This analysis addresses: 1) liquefaction susceptibility; 2) liquefaction triggering; and 3) post-triggering/flow failure stability. In particular, step 2) uses the yield strength ratio back-calculated from flow failure case histories and the cyclic stress method to incorporate seismic loading.

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  • English

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  • Accession Number: 00961674
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 12 2003 12:00AM