Pipe-joint steel shell and concrete combined structure for immersed tunnel and manufacturing method thereof

Abstract

A pipe-joint steel shell and concrete combined structure for an immersed tunnel comprises a steel shell structure (a cavity) and concrete. The steel shell structure is filled with the concrete and composed of an inner side steel plate and an outer side steel plate. Transverse and longitudinal reinforced ribbed plates are welded to the surface of an inner cavity of the inner side steel plate and the surface of an inner cavity of the outer side steel plate so that the strength and rigidity of the shell can be enhanced. Transverse and longitudinal steel partition plates or steel trusses are connected with the inner and outer side steel plates so that the inner and outer side steel plates can be of an integrated structure. The shell is filled with the concrete so as to improve the overall rigidity and strength of the pipe joint structure. The invention further discloses a manufacturing method of the pipe-joint steel shell and concrete combined structure for the immersed tunnel. By means of the combined structure of the external steel shell and the concrete arranged in the steel shell in a filling mode, the overall rigidity, strength, waterproofness, durability and shock resistance of the pipe joint structure can be improved, and the pipe-joint steel shell and concrete combined structure is applicable to long-span immersed pipe joint structures on the conditions with high water pressure and large embedding depth and immersed pipe joint structures under other special demands.

Description

technical field [0001] The invention relates to the technical field of tube sections for immersed tube tunnels, in particular to a tube section steel shell concrete composite structure for immersed tube tunnels and a manufacturing method thereof. Background technique [0002] At present, the structural forms of the main structures of the pipe joints for immersed tunnels in China are all reinforced concrete structures. [0003] The reinforced concrete structure is constructed by erecting the formwork - binding the steel frame - pouring concrete. After the concrete is condensed, it forms an overall stress structure with the steel frame. Under ordinary construction conditions, the concrete structure immersed pipe section has the characteristics of convenient construction, mature technology and good engineering economy. [0004] When the immersed tunnel encounters high water pressure, large burial depth, large span, high waterproof, high durability and other special requirement...

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Problems solved by technology

[0004] When the immersed tube tunnel encounters high water pressure, large buried depth, large span, high waterproof, high durability and other special requirements, the reinforced concrete structure is extremely difficult or even impossible to pour concre...

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