The foundation of offshore wind turbines subjected to cyclic loads derived from wind and waves tends to produce cyclic accumulative deformation, which affects the turbines' normal operation. Its essence is the accumulative deformation of soils around the foundation. A series of cyclic triaxial compression tests on saturated sands under drained conditions are carried out to study the influence of soil and stress parameters, such as dynamic stress ratio, initial density, initial mean stress and initial static...