Comparison of liquefaction triggering methods for sloping ground using two flow failures from the 2010 haiti earthquake

Alfonso Cerna-Díaz, Scott M. Olson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Evaluating liquefaction (both triggering and post-triggering) of sloping ground remains a difficult task for practicing engineers. For triggering, two approaches are available: (1) the cyclic stress method modified with corrections for high overburden stress and static shear stresses; and (2) the yield strength ratio method. Similarly, for post-triggering stability analysis, two general approaches are available to estimate the liquefied shear strength: (1) correlations for residual strength; and (2) correlations for liquefied shear strength ratio. These triggering and post-triggering methods were applied to two slope failures induced by the Mw 7.0 Haiti (2010) earthquake. The analyses suggest that the yield and liquefied strength ratio approaches provided factors of safety consistent with observed performance. In contrast, methods using the cyclic stress approach and residual shear strength provided results that were consistent with only one of the two case histories described in this paper.

Original languageEnglish (US)
Title of host publicationGeoCongress 2013
Subtitle of host publicationStability and Performance of Slopes and Embankments III - Proceedings of the 2013 Congress
PublisherAmerican Society of Civil Engineers
Pages918-926
Number of pages9
Edition231 GSP
ISBN (Print)9780784412787
DOIs
StatePublished - 2013
Event2013 Congress on Stability and Performance of Slopes and Embankments III, Geo-Congress 2013 - San Diego, CA, United States
Duration: Mar 3 2013Mar 7 2013

Publication series

NameGeotechnical Special Publication
Number231 GSP
ISSN (Print)0895-0563

Other

Other2013 Congress on Stability and Performance of Slopes and Embankments III, Geo-Congress 2013
CountryUnited States
CitySan Diego, CA
Period3/3/133/7/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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