Framework for assessing probability of exceeding a specified liquefaction-induced settlement at a given site in a given exposure time

Chih Chieh Lu, Jin Hung Hwang, C. Hsein Juang, Chih Sheng Ku, Zhe Luo

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

This paper presents a framework for assessing the probability of exceeding a specified liquefaction-induced settlement at a given site in a given exposure time. This framework deals not only with the effect of liquefaction (in terms of settlement) but also with probabilistic characterization of all possible ground motions at a given site (in terms of a joint distribution of amax and Mw). Additionally, a new concept, referred to herein as liquefaction-induced settlement hazard curve, is introduced for assessing the annual rate of settlement exceedance at a given site. This settlement hazard curve concept has the potential to be a very useful tool in the field of geotechnical earthquake engineering. Satisfactory results are obtained in the demonstration examples analyzed with the proposed framework. Whereas the proposed framework is simple and effective, further refinements to this framework, especially on the treatment of epistemic uncertainty, are warranted.

Original languageEnglish
Pages (from-to)24-35
Number of pages12
JournalEngineering Geology
Volume108
Issue number1-2
DOIs
StatePublished - 14 Sep 2009

Keywords

  • Joint probability distribution
  • Liquefaction
  • Seismic hazards
  • Settlement
  • Standard penetration testing

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