Elastoplastic medium for foundation settlements and monotonic soil-structure interaction under combined loadings

摘要

Foundation settlements and soil—structure interaction are important problems to structural and geotechnical engineers. This study introduces a novel elastoplastic three-degree-of-freedom medium which models foundations settlements under combined loadings. A soil-structure interaction problem can then be solved by replacing the soil mass with this three-degree-of-freedom elastoplastic medium, thus reducing significantly the size of the problem. The model was developed by extending the classical plasticity concepts to the force-deformation level. Its ability to predict foundation deformations was evaluated using finite element solutions of a typical shallow foundation problem and was found reasonably accurate while producing significant time savings.