Journal
INTERNATIONAL JOURNAL OF GEOMECHANICS
Volume 21, Issue 2, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)GM.1943-5622.0001904
Keywords
Bearing capacity; Random finite-element method; Monte Carlo simulation; Multifootings; Nonstationarity
Categories
Funding
- National Natural Science Foundation of China [51890912]
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A probabilistic study was conducted on the bearing capacity of two parallel strip footings on a spatially variable soil with undrained shear strength increasing linearly with depth. The study also compared the single footing case and discussed the effect of footing interference. Monte Carlo simulations were used to evaluate the bearing capacity for different degrees of nonstationarity and spatial correlation length in undrained shear strength.
A probabilistic study on the bearing capacity of two parallel strip footings on a spatially variable soil where the mean of undrained shear strength increased linearly with depth was performed. For the comparative purpose, the single footing case was also investigated. Stationary and nonstationary random fields obeying log-normal distribution of undrained shear strength were generated and further mapped into nonlinear finite-element analysis. Monte Carlo simulations were then performed to evaluate the bearing capacity for the selected ranges of the degree of nonstationarity and the spatial correlation length in undrained shear strength. The normalized bearing capacities derived from two different random field models for the cases of single and two footings were compared, and the effect of footing interference was also discussed.
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