Effect of spatial variability of block-type cement-treated ground on the bearing capacity of foundation under inclined load

Kiyonobu Kasama, Andrew J. Whittle, Masaki Kitazume

Research output: Contribution to journalArticle

Abstract

Deep mixing methods are widely used for stabilizing soft clayey soils and improving their bearing capacity. However, spatial variability in the shear strength of the cement-treated ground introduces uncertainties in estimating the bearing capacity for design. This paper evaluates the reliability of, block-type, cement-treated foundation under inclined load conditions using random field numerical limit analyses. The undrained shear strength is modelled as a random field which is characterized by a log-normal distribution and a spatial correlation length. Monte Carlo simulations are then used to interpret the stochastic bearing capacity factor and failure mechanisms for inclined concentric loading conditions at selected ratios of the shear strength ratio of cement-treated ground to original clay, the coefficient of variation in undrained shear strength and correlation length of the cement-treated zone. Variability of the undrained shear strength can reduce the expected bearing capacity of the cement-treated ground by 50–70% compared to homogeneously mixed clay.

Original languageEnglish
Pages (from-to)2125-2143
Number of pages19
JournalSoils and Foundations
Volume59
Issue number6
DOIs
Publication statusPublished - Dec 2019

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

Fingerprint Dive into the research topics of 'Effect of spatial variability of block-type cement-treated ground on the bearing capacity of foundation under inclined load'. Together they form a unique fingerprint.

  • Cite this