In offshore wind power project

pile is a commonly used foundation type and is commonly established in soft soil foundations and suffers complex loading combinations

while the bearing capacity and deformation of the foundation is with strict requirements for running of wind power generations. Therefore

studies of behavior and interaction mechanism of pile foundation under cyclic lateral loading have important significance. Centrifugal model tests for typical offshore pile foundation and saturated sand ground are conducted to study deformation characteristics under cyclic lateral loading. Test results show that: under cyclic lateral loading

settlement and horizontal deformation

which is mainly caused by extrusion or collapse

occurs in a limit extent of soil around pile; deformation gradually accumulates with increase of cycles; peak bending moment of pile appears in the 1/3 of burying depth; little change happens in distribution of bending moment with cycles increasing; different excess pore water pressure develops at different locations of soil surrounding pile

which has a certain influence on the foundation behavior