Multi-degree-of-freedom cyclic loading device for laboratory test study of offshore wind turbine foundation

The invention discloses a multi-degree-of-freedom cyclic loading device for a laboratory test study of an offshore wind turbine foundation. According to the device, a pulley system is composed of a movable pulley and a fixed pulley, and is combined with a cyclic stepper motor, a spring base, a specially-designed model box, a steel frame and a flange disc, and cyclic loading in any period and any manner can be realized through controlling a moving distance and a moving speed of the cyclic stepper motor. In addition, cyclic loading at any angle can be realized through changing a connection position of the steel frame and the model box, rotating the flange disc, and using universal wheels to control the bottom of the base. The device disclosed by the invention is easy to machine and assemble, high in economical efficiency and practicability, and capable of being applied to the laboratory model test study of the offshore wind turbine foundation. 本发明公开了种用于海上风机基础室内试验研究的多自由度循环加载装置，该装置利用动滑轮和定滑轮组成滑轮系统，结合循环步进电机、弹簧基座以及特