Existing station top plate concrete supporting stress system

The utility model relates to an existing station top plate concrete supporting stress system. When a main body structure and an accessory structure are constructed through an existing open excavation method, the accessory structure and the main body structure need to be poured and constructed by stages. The system comprises a station top plate of a main body structure, an auxiliary concrete support above an auxiliary structure and a bracket, the bottom of the bracket is fixedly connected to the top surface of the station top plate; one end of the auxiliary concrete support is fixedly connected to the inner side of the crown beam on the outer side of the auxiliary structure, and the other end of the auxiliary concrete support is fixedly connected to the side face of the bracket. The design problem that staged pouring is needed in the accessory structure construction process is solved, the existing station top plate and the side wall are matched with the accessory concrete support and the bracket to form a stre