Determination of partial factors for the verification of the bearing capacity of shallow foundations under open channels

Akira Murakami, Shin Ichi Nishimura, Makoto Suzuki, Mitsuhiro Mori, Takashi Kurata, Tatsuya Fujimura

Research output: Contribution to journalArticle


The limit state design method has been introduced into the design criteria for geotechnical structures.The current paper attempts to apply the reliability-based design method, at Level II, to the bearing capacity of the foundations of open channels from the viewpoint of the limit state design.To examine the applicability of the proposed procedure for practical structures, the reliability index is computed for evaluating the stability of the foundations of existing open channels designed by the conventional method.The conventional design procedure makes excessively safe side design.We applied the first order reliability methods (FORM) to the existing open channels designed by the conventional design procedure, and consequently, large values of reliability index, 3 and 5 were obtained for clayey and sandy soils, respectively.Finally, the partial factors for the soil parameters have been determined, corresponding to the target reliability indices βt=1, 3 and 4.

Original languageEnglish
Pages (from-to)186-194
Number of pages9
Issue number3-4
Publication statusPublished - Sep 1 2011



  • Bearing capacity
  • First order reliability methods (FORM)
  • Foundations
  • Geotechnical reliability
  • Limit state design
  • Open channel
  • Reliability analysis
  • Reliability index
  • Statistical property of soil parameters

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Safety, Risk, Reliability and Quality
  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this