Anti-floating structure of shallow-buried tunnel

The invention relates to the technical field of tunnel engineering. The invention discloses a shallow-buried tunnel anti-floating structure which is characterized in that a bidirectional shield segment is connected to a bent open cut structure end wall on one side of a bidirectional open cut structure through a tunnel portal ring beam, and an uplift pile is vertically embedded below a steel pipe sheet embedded into the inner wall of the shield segment; the top of the uplift pile penetrates through the steel pipe sheet and is connected with an anti-floating longitudinal beam which is laid at the lowest position in the shield segment, and one end of the anti-floating longitudinal beam is laid to the minimum inner contour of the tunnel portal ring beam and is connected with the minimum inner contour of the tunnel portal ring beam; the anti-floating effect is achieved by connecting the anti-floating longitudinal beams in the tunnel hole with the uplift piles below the anti-floating longitudinal beams and connecti