TY - GEN
T1 - Reliability assessment of cement-mixed ground bearing capacity considering spatial variability
AU - Kasama, Kiyonobu
AU - Zen, Kouki
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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U2 - 10.1061/41022(336)46
DO - 10.1061/41022(336)46
M3 - Conference contribution
AN - SCOPUS:69949159377
SN - 9780784410226
T3 - Geotechnical Special Publication
SP - 356
EP - 363
BT - Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - Proceedings of Selected Sessions of the 2009 International Foundation Congress and Equipment Expo
T2 - Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations - 2009 International Foundation Congress and Equipment Expo
Y2 - 15 March 2009 through 19 March 2009
ER -