Test device simulating bridge pile foundation under bidirectional cyclic load effect

The invention relates to a test device simulating a bridge pile foundation under a bidirectional cyclic load effect. The device comprises a bearing frame, a model tank, a model pile, a vertical loading frame, a vertical loading beam, a vertical loading actuator and a horizontal loading actuator, wherein the model tank is mounted in the bearing frame; the model pile is arranged in the model tank; the vertical loading frame is connected to the upper end of the bearing frame; the vertical loading beam is connected to the vertical loading frame; one end of the vertical loading actuator is fixed on the vertical loading beam, and the other end is vertically aligned with the model pile; and one end of the horizontal loading actuator is fixed on the vertical loading frame, and the other end is horizontally aligned with the model pile. Compared with the prior art, the test device provided by the invention has the advantages of wide application range, high simulation precision and the like.