Testing device for bonding performance of concrete and steel structure

The invention provides a device for testing the bonding performance of concrete and a steel structure, and belongs to the technical field of material testing, the device comprises a testing machine main body, the testing machine main body is provided with a clamping platform, and a gear ring rotary table is formed on the outer edge of the clamping platform; the drawing assembly is used for drawing the steel structure; each clamping assembly comprises a sliding cylinder, a clamping jaw is slidably connected into the sliding cylinder through an elastic assembly, and a rack is arranged on the side face of the clamping jaw; each transmission assembly comprises a transmission shaft and a transmission gear which are matched with each other, and the transmission gears are matched with the racks; and the driving assembly comprises a gear ring, the gear ring rotary table is sleeved with the gear ring, and the driving assembly further comprises a rotating assembly for driving the gear ring to rotate and a lifting assem