Moment methods for assessing the probability of serviceability failure in braced excavations

Lei Wang, Zhe Luo, Wenping Gong, Sara Khoshnevisan, C. Hsein Juang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

When the performance function (or limit state) is a numerical model without an explicit form, reliability analysis based on this limit state is often difficult to perform. In this paper, a series of moment methods that is built on the solutions obtained from PlaxisTM, a commercially available finite element code, is adopted for probabilistic evaluation of serviceability failure in a braced excavation. The accuracy of the computed reliability index and probability of failure tends to increase when the higher-order moments are considered. In addition, the effect of spatial variability of soil parameters on the computed probability of serviceability failure is investigated. A well documented case history of a braced excavation in clay is analyzed, and the results show that the moment methods are effective and easy to apply for computing failure probability.

Original languageEnglish
Title of host publicationGeo-Congress 2014 Technical Papers
Subtitle of host publicationGeo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages3293-3302
Number of pages10
Edition234 GSP
ISBN (Print)9780784413272
DOIs
StatePublished - 2014
Event2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014 - Atlanta, GA, United States
Duration: 23 Feb 201426 Feb 2014

Publication series

NameGeotechnical Special Publication
Number234 GSP
ISSN (Print)0895-0563

Conference

Conference2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014
Country/TerritoryUnited States
CityAtlanta, GA
Period23/02/1426/02/14

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