Is soil spatial variability the most important source of uncertainty in geotechnical design?

Y. Honjo, Y. Otake

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

Abstract

The authors have been proposing a Reliability Based Design (RBD) scheme for practicing geotechnical engineers that is termed GRASP (Geotechnical Reliability Analysis by a Simplified Procedure). In the sister paper submitted to this conference by the same authors, a simplified method to evaluate the effects of soil spatial variability on the performance of the geotechnical structures is proposed. The method is based on the LA (local average) over the geotechnically appropriate volume. By focusing on the LA, it is possible to establish a clear-cut statistical estimation theory which gives the bases for evaluating statistical estimation error. In this paper, the outline of GRASP is summarized in the first half of this paper with emphasis on the way to evaluate the statistical estimation error. The latter half of the paper is devoted to the consideration on the major uncertainty sources in geotechnical design based on results of analyses by GRASP on various typical geotechnical structures, such as piles, shallow foundations and embankments on soft ground.

Original languageEnglish
Title of host publicationComputer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
PublisherTaylor and Francis - Balkema
Pages1271-1276
Number of pages6
ISBN (Print)9781138001480
Publication statusPublished - 2015
Externally publishedYes
Event14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 - Kyoto, Japan
Duration: 2014 Sep 222014 Sep 25

Publication series

NameComputer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014

Other

Other14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014
CountryJapan
CityKyoto
Period14/9/2214/9/25

ASJC Scopus subject areas

  • Computer Science Applications
  • Geochemistry and Petrology

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  • Cite this

    Honjo, Y., & Otake, Y. (2015). Is soil spatial variability the most important source of uncertainty in geotechnical design? In Computer Methods and Recent Advances in Geomechanics - Proc. of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014 (pp. 1271-1276). (Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014). Taylor and Francis - Balkema.