Reliability assessment of cement-mixed ground bearing capacity considering spatial variability

Kiyonobu Kasama, Kouki Zen

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

Abstract

Cement-mixing method is gaining popularity as a method for stabilizing soft soils in applications ranging from the improvement of foundation properties to mitigation of liquefaction. However, spatial variability in the shear strength of the cement-mixed ground introduces uncertainties in estimating the bearing capacity for design. This paper presents a reliability assessment for the bearing capacity of cement-mixed ground based on the results of a probabilistic study in which the shear strength of the cement-mixed ground is represented as a random field in Monte Carlo simulations of undrained stability for a surface foundation using numerical limit analyses. The results show how the bearing capacity is related to the coefficient of variation and correlation length scale in the shear strength of cement-mixed ground. Finally, the reduction of bearing capacity due to spatial variability of shear strength in cement-mixed ground is evaluated based on the result of the application to construction sites by cement-mixing in Japan in terms of probabilistic point of view. Copyright ASCE 2009.

Original languageEnglish
Title of host publicationContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - Proceedings of Selected Sessions of the 2009 International Foundation Congress and Equipment Expo
Pages356-363
Number of pages8
Edition186
DOIs
Publication statusPublished - Sep 14 2009
EventContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - 2009 International Foundation Congress and Equipment Expo - Orlando, FL, United States
Duration: Mar 15 2009Mar 19 2009

Publication series

NameGeotechnical Special Publication
Number186
ISSN (Print)0895-0563

Other

OtherContemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - 2009 International Foundation Congress and Equipment Expo
CountryUnited States
CityOrlando, FL
Period3/15/093/19/09

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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