Print Email Facebook Twitter Probabilistic Analysis at Ultimate Limit State of Strip Footings Resting on a Spatially Varying Soil Using Subset Simulation Approach Part of: Geotechnical Safety and Risk V· list the conference papers Title Probabilistic Analysis at Ultimate Limit State of Strip Footings Resting on a Spatially Varying Soil Using Subset Simulation Approach Author Thajeel, J. Al-Bittar, T. Ahmed, A. Soubra, A-H. Date 2015-10-15 Abstract The failure probability of geotechnical structures with spatially varying soil properties is generally computed using Monte Carlo simulation (MCS) methodology. This approach is well known to be very time-consuming when dealing with small failure probabilities. One alternative to MCS is the subset simulation approach. This approach was mainly used in the literature in cases where the uncertain parameters are modelled by random variables. In this paper, it is employed in the case where the uncertain parameters are modelled by random fields, because the spatial variability of the soil properties has proven to greatly affect the behavior of geotechnical structures and to induce a significant change in the variability of their responses. This is illustrated through the probabilistic analysis at the ultimate limit state (ULS) of a strip footing resting on a one- and two-layer purely cohesive soil with a spatially varying cohesion. The soil cohesion parameter was modeled as an anisotropic non-Gaussian (log-normal) random field using a square exponential autocorrelation function. The Expansion Optimal Linear Estimation (EOLE) method was used to discretize this random field. The deterministic model was based on numerical simulations using the finite difference software FLAC3D. Subject Expansion optimal linear estimation method (EOLE)strip footingultimate limit statesubset simulation approachMonte Carlo simulationrandom fieldspatial variability To reference this document use: http://resolver.tudelft.nl/uuid:4667a62d-b02f-4945-b402-0f1d048d7133 DOI https://doi.org/10.3233/978-1-61499-580-7-328 Part of collection Conference proceedings Document type conference paper Rights (c) The Authors and IOS Press, Creative Commons CC-BY Files FILE STAL9781614995807-0328 554.28 KB Close viewer /islandora/object/uuid:4667a62d-b02f-4945-b402-0f1d048d7133/datastream/OBJ/view