Structure of steel-concrete combined structural aqueduct and construction method thereof

Abstract

The invention relates to a structure of a steel-concrete combined structural aqueduct and a construction method thereof, and belongs to the technical field of building structures. The steel-concrete combined structural aqueduct comprises an upper concrete groove body, a groove body top steel pull rod and a lower steel beam, wherein the upper concrete groove body adopts a rectangular or U-shaped cross section, and the lower steel beam is arranged along the longitudinal through length of the groove body, and is connected with the upper concrete groove body through a connecting piece to form a whole; the side wall of the groove body is reinforced through the mode that a variable cross section is adopted, an L-shaped thin steel plate is pasted on the inner side or prestressed reinforcements are arranged in the vertical direction; and the top of the side wall of the groove body is connected in a pulled mode through adopting the steel pull rod. According to the structure of the steel-concrete combined structural aqueduct, the stress state and the construction detail of a traditional concrete aqueduct are changed, so that the aqueduct does not need to rely on a large amount of prestressedtendons to control concrete cracking, the water conveying safety of the aqueduct is greatly improved, the structure is simple, the construction is convenient, and the economy and the practicability are achieved.

Description

technical field [0001] The invention relates to a structure and a construction method of a steel-concrete combined structure aqueduct, belonging to the technical field of structural engineering. Background technique [0002] As an important water delivery structure, aqueducts are widely used in water conservancy projects and water diversion projects. Due to the special function of use, the structure of the aqueduct must not only meet the requirements for carrying capacity, but also meet the requirements for watertightness to ensure the safety of the water delivery process. Traditional aqueducts usually adopt a prestressed reinforced concrete structure, and the internal tensile stress of the structure is reduced by applying prestress in three directions (horizontal and longitudinal directions of the bottom plate, and vertical direction of the side walls) to avoid concrete cracking under tension. Due to the three-way interlacing of prestressed tendons and the large number, th...

AI Technical Summary

Problems solved by technology

The composite structure aqueduct described in the present invention can meet the anti-cracking design requirements without setting prestressed tendons or only a small amount of prestressed tendons by changing the stress state and structural details of the structure. In the normal use stage, no tensile stress is generated or the tensile stress is much smaller than the cracking stress of concrete, which fundamentally eliminates the possibility of concrete cracking, greatly improves the safety and reliability of the aqueduct structure, and solves the problem of relying on a large number of prefabricated aqueducts in existing concrete aqueducts. The difficulty of construction and limited effect caused by stress tendons to control concrete cracking

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