Piles are widely used as a foundation for the offshore wind power generation and undergoing a complex combination of loads including the low-frequency cyclic wind loading. A new device has been developed to simulate the complicated loads on the piles during the centrifuge model tests. Apart from the horizontal and vertical static loads

this device can also realize a long-time and low-frequency cyclic load

with a combination of other types of loads that are applied simultaneously or successively. The validity of this device

that it can meet the requirement for simulating the complicated loads that the pile undergoes

is preliminarily verified via a series of tests. The test results show that the displacement of pile top increases with increasing number of cycles of horizontal cyclic loads; but the growth rate gradually decreased with the displacement tending to stabilize after a certain cycles; and the deformation of soils concentrates in a certain region near the pile