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Probabilistic analyses of three-dimensional circular footing resting on two-layer c–ϕ soil system considering soil spatial variability
The prime objective of this paper is to study the effect of soil spatial variability on the three-dimensional probabilistic bearing capacity of a circular footing resting on the surface of a two-layered cohesive-frictional soil system. The cohesion and friction angle for both the layers are considered to be lognormally distributed random fields. The finite-difference code is incorporated to execute all the numerical analyses. Deterministic and probabilistic studies are conducted for both weak over strong and strong over weak soil systems. The parametric studies are carried out considering different thicknesses of the top layer, horizontal, and vertical scales of fluctuation, whereas a single constant value is chosen for the coefficients of variation for cohesion and friction angle. The Monte Carlo simulation technique is adopted to estimate the mean and coefficient of variation of bearing capacity of the footing. The effect of cross-correlation between cohesion and friction angle on the probabilistic characteristics of bearing capacity and the variation of failure probability for different scales of fluctuation are also investigated in this study.
Probabilistic analyses of three-dimensional circular footing resting on two-layer c–ϕ soil system considering soil spatial variability
The prime objective of this paper is to study the effect of soil spatial variability on the three-dimensional probabilistic bearing capacity of a circular footing resting on the surface of a two-layered cohesive-frictional soil system. The cohesion and friction angle for both the layers are considered to be lognormally distributed random fields. The finite-difference code is incorporated to execute all the numerical analyses. Deterministic and probabilistic studies are conducted for both weak over strong and strong over weak soil systems. The parametric studies are carried out considering different thicknesses of the top layer, horizontal, and vertical scales of fluctuation, whereas a single constant value is chosen for the coefficients of variation for cohesion and friction angle. The Monte Carlo simulation technique is adopted to estimate the mean and coefficient of variation of bearing capacity of the footing. The effect of cross-correlation between cohesion and friction angle on the probabilistic characteristics of bearing capacity and the variation of failure probability for different scales of fluctuation are also investigated in this study.
Probabilistic analyses of three-dimensional circular footing resting on two-layer c–ϕ soil system considering soil spatial variability
Acta Geotech.
Choudhuri, Kouseya (author) / Chakraborty, Debarghya (author)
Acta Geotechnica ; 17 ; 5739-5758
2022-12-01
20 pages
Article (Journal)
Electronic Resource
English
Failure probability , Monte Carlo simulation , Scale of fluctuation , Spatial variability , Two-layer soil system Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
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