Flexible joint structure of round or horseshoe-shaped tunnel mid-partition wall

The utility model relates to a flexible joint structure of a round or horseshoe-shaped tunnel mid-partition wall. The flexible joint structure comprises a tunnel secondary lining, a mid-partition wall and a flexible connecting structure, the middle partition wall is arranged in the middle of the tunnel secondary lining, the bottom of the middle partition wall is fixedly connected with the tunnel secondary lining, and a gap is reserved between the top and the tunnel secondary lining; the flexible connecting structures are connected between the upper end face of the middle partition wall and the tunnel secondary lining and arranged along the middle partition wall at intervals. The flexible connecting structure comprises a connector top plate, an upper vertical plate, a connector bottom plate, a lower vertical plate and a connecting bolt, wherein the connector top plate and the upper vertical plate are anchored in a tunnel secondary lining, and the connector bottom plate and the lower vertical plate are anchored