Tunnel bionic reinforcement bridge

Abstract

The invention relates to a structure of tunneling, in particular to a tunnel bionic reinforcement bridge. In a shield tunnel spliced by pipe pieces, the tunnel bionic reinforcement bridge is formed by connecting multiple sections of variable cross-section arched cell cubes, namely bionic reinforcement arches in series end to end; the outer wall of each bionic reinforcement arch is circular and is in fit with the inner wall of a tunnel; the top of each bionic reinforcement arch is provided with a top plate (5); a longitudinal end of the top plate is extended out of a wedge head (4), and the other end of the top plate is recessed into a groove or a shrinkage pool with the shape and size corresponding to those of the wedge head (4); a support vertical shaft (2) is extended on two sides in the loop direction respectively; the respective wedge head (4) of each of the plurality of the bionic reinforcement arches is inserted into the groove or the shrinkage pool (6) of the adjacent bionic reinforcement arch so as to form a longitudinal bionic reinforcement bridge structure, and the longitudinal bionic reinforcement bridge structure is prefabricated by using concrete, and is supported and fixed in the shield tunnel spliced by the pipe pieces; and the longitudinal length of each section of bionic reinforcement arch is equal to that of each circle of the shield tunnel. The tunnel bionic reinforcement bridge not only can be applied to the reinforcement and maintenance of an operation tunnel, but also can be introduced into the design of a new tunnel, and improves the longitudinal and horizontal rigidity of the tunnel and the intensity of the tunnel top and the intensity at the horizontal diameter of the tunnel.

Description

technical field [0001] The invention relates to a structural part of tunnel engineering, in particular to a reinforcement structure for increasing rigidity in the longitudinal direction of a shield tunnel. Background technique [0002] At present, it is a world-class problem to control the excessive deformation of soft soil tunnels during long-term operation. In order to prevent the large deformation of the tunnel and the threat of secondary disasters to ensure safe operation, all countries have taken active measures. Japan adopted a double-layer lining ring of reinforced concrete poured on site, and the Netherlands adopted a single-layer lining ring of short pile foundation. Germany adopted the shield tunneling method and the single-layer assembly method, and Shanghai, as the first construction unit of the soft ground subway tunnel in China, adopted the German model and spliced ​​through the joints. Taking the Shanghai Tunnel as an example, before the start of the project,...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a bionic technology that can be used in subway tunnels of new buildings and reconstruct old tunnels to improve rigidity and strength for the problem of uneven longitudinal settlement of tunnels and pipelines in soft soil. Tunnel reinforcement structure, the purpose of the present invention is achieved by the following technical solutions

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