Post-tensioned prefabricated T beam for expressway

The utility model discloses an expressway post-tensioning prefabricated T-beam which comprises a prefabricated box, a plurality of vibration mechanisms are fixedly connected to the peripheral side of the prefabricated box, a base plate is arranged at the bottom of the prefabricated box, a plurality of limiting balls are embedded in the bottom of the base plate, and the side, opposite to the base plate, of the prefabricated box is slidably connected with a spring mechanism through a sliding groove. The vibration mechanism comprises a protective cover and a connecting frame which are fixedly connected with the prefabricated box, a motor is fixedly connected to the inner wall of the connecting frame, a cam is fixedly connected to the driving end of the motor, the spring mechanism comprises a limiting strip slidably connected with the corresponding sliding groove, and a plurality of sliding balls are embedded in the peripheral side of the limiting strip; the arrangement of the vibration mechanism facilitates bett