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Liquefaction potential index: Field assessment

Journal of Geotechnical and Geoenvironmental Engineering

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DOI: 10.1061/(ASCE)1090-0241(2003)129:4(315)

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Abstract

Cone penetration test (CPT) soundings at historic liquefaction sites in California were used to evaluate the predictive capability of the liquefaction potential index (LPI), which was defined by Iwasaki et al. in 1978. LPI combines depth, thickness, and factor of safety of liquefiable material inferred from a CPT sounding into a single parameter. LPI data from the Monterey Bay region indicate that the probability of surface manifestations of liquefaction is 58 and 93%, respectively, when LPI equals or exceeds 5 and 15. LPI values also generally correlate with surface effects of liquefaction: Decreasing from a median of 12 for soundings in lateral spreads to 0 for soundings where no surface effects were reported. The index is particularly promising for probabilistic liquefaction hazard mapping where it may be a useful parameter for characterizing the liquefaction potential of geologic units.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Liquefaction potential index: Field assessment
Series title:
Journal of Geotechnical and Geoenvironmental Engineering
DOI:
10.1061/(ASCE)1090-0241(2003)129:4(315)
Volume
129
Issue:
4
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geotechnical and Geoenvironmental Engineering
First page:
315
Last page:
322
Number of Pages:
8