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

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)2125-2143
ページ数19
ジャーナルSoils and Foundations
59
6
DOI
出版ステータス出版済み - 12 2019
外部発表はい

All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 地盤工学および土木地質学

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