Examination of DMT-based methods for evaluating the liquefaction potential of soils

Gordon Tung Chin Kung, Der Her Lee, Pai Hsiang Tsai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The flat dilatometer test (DMT) has the potential to be a useful tool in the evaluation of liquefaction potential of soils. In practice, it is necessary to carefully examine existing DMT-based methods for evaluating liquefaction potential. We conducted the DMT and cone penetration test (CPT) in high liquefaction potential areas to examine the existing DMT-based methods for liquefaction potential evaluation. Specifically, the DMT and CPT were conducted side-by-side at each of six in-situ sites, and thus it is feasible to utilize those test results to validate the existing DMT-based methods. The DMT parameter, horizontal stress index (K D), is used as an indicator for estimating liquefaction resistance of soils in terms of cyclic resistance ratio (CRR). The analysis results revealed that the existing K D-based liquefaction evaluation methods would overestimate the CRR of soils, which leads to overestimation of the factor of safety against liquefaction. Also, the estimations of DMT-K D values by using the CPT-q c as well as the correlation between DMT-K D and CPT-q c proposed by the previous studies would be significantly smaller than field measurements. The results reflected that further validation of the existing DMT-based methods for liquefaction evaluation is desirable.

Original languageEnglish
Pages (from-to)807-817
Number of pages11
JournalJournal of Zhejiang University: Science A
Volume12
Issue number11
DOIs
Publication statusPublished - 2011 Nov 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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