Column structure active and passive earth pressure combined model experiment device

The utility model relates to the technical field of geotechnical engineering support structure research, and discloses a cylinder structure active and passive earth pressure combined model experiment device, which comprises an experiment groove, a brake device, a cylinder model, a cable and a pressure sensor, the experiment groove is filled with filler, the cylinder model is vertically embedded in the filler, and the brake device is arranged on the cylinder model. The pressure sensor is installed on the surface of the cylinder model and covered with the filler, the braking device is connected with the cylinder model through the cable, and the pressure sensor measures active soil pressure and/or passive soil pressure. According to the utility model, the column body model is used for simulating the support model, the object movement is relative, the force action is mutual, the reference object is changed, and the movement condition and the stress condition have a corresponding relation, so that the conditions o