Caissons are massive foundations having high stiffness which carry large vertical as well as lateral loads. As caissons support lifeline structures, it makes their study very significant. In the current study, numerical modeling of laboratory scale models of caissons was performed using finite element software ABAQUS. The base dimensions of caisson and its depth of embedment were varied keeping other factors same. The caisson dimensions and the soil properties were simulated with the test conditions adopted by Sharda (1975) in the experimental study. Geometric and material non-linearity were taken into account. A code was written in Python for obtaining section forces and bending moment. Lateral soil pressure, load sharing, maximum and minimum base pressures, well displacement, and point of rotation were determined. It was observed on the basis of these computations that the lateral load resistance of caisson increased with both size and embedment depth of caisson. The results were found to be in good agreement with the experimental results of Sharda (1975).
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