Tunnel and bridge co-construction mechanism

The embodiment of the invention provides a tunnel and bridge co-construction mechanism, which is applied to the condition that a tunnel and a bridge are collinear up and down, and comprises a tunnel, a bridge, a first bridge and a second bridge, the bridge is provided with a plurality of bridge piers, the plurality of bridge piers are arranged along a second laying line of the bridge, and the bridge piers located in the overlapping area of the first laying line of the tunnel and the second laying line of the bridge are arranged on the corresponding tunnel; wherein at least one side, facing the bridge piers, of the tunnel is provided with a reinforcing structure used for improving rigidity. According to the tunnel and bridge co-construction mechanism provided by the embodiment of the invention, co-construction of the tunnel and the bridge can be realized when the laying lines of the tunnel and the bridge are overlapped, the bridge or the tunnel does not need to be laid around the road, and foundation excavatio