Abstract
In order to evaluate the stability of structure-sand ground system subjected to cyclic loadings such as wave force, a series of FEM analysis based on Mohr-Coulomb formula with non-associated flow rule and model tests were carried out under cyclic and static loading conditions. From test results and analyses, it is found that (1) the deformation behaviors of sand ground subjected to various cyclic loadings can be estimated by the simplified FEM analysis taking account of the dependency of rigidity modulus on stress history and (2) the predicted structure displacements by the proposed method agree well with the results of the model test.
