Corrugated steel web pre-flex assembled groove shape beam and manufacturing method thereof

Abstract

The invention discloses a corrugated steel web pre-flex assembled groove shape beam and a manufacturing method thereof. The assembled groove shape beam comprises a corrugated steel webs (1) located at two sides of the assembled groove shape beam, primary concrete bad plate (5) cast at the periphery of a lower flange steel plate (3), and a secondary concrete cast at the periphery of an upper flange steel plate (2) or connected with the upper flange steel plate (2) by a shear connecting piece (4), the upper parts of the corrugated steel webs (1) are connected with the upper flange steel plate (2), the lower parts of the corrugated steel webs (1) are connected with the lower flange steel plate (3), and the formed cross section is a groove shape structural beam. The assembled groove shape beam solves the problems of the complex stress condition of plate-beam joint position of common prestress concrete groove shape beam, the easy cracking of concrete, the complex structure of reinforcing bars of the plate-beam joint position and high construction difficulty, high requirements for construction technology and condition, the large occupied area of on-site casting construction, the long construction period, etc.

Description

technical field [0001] The invention relates to a bridge composite beam structure, in particular to a corrugated steel web pre-bent composite channel beam. Background technique [0002] Channel beams are also called U-shaped beams. Research on prestressed concrete channel beams has been carried out in foreign countries in the middle of the 20th century. The earliest application of prestressed concrete channel beams was the Rocherham Bridge built in England in 1952. Since then, Japan, former West Germany, and Australia have successively applied channel girders to railway bridges and built many channel beam bridges. In order to adapt to the development of overpasses, to increase headroom and reduce noise, Japan has successively built a number of trough beam bridges since the 1950s. In the construction of the Shinkansen, due to the limitation of building height, trough beam bridges are used in many sections, such as Xiatuo Bridge, Toke Hanamin Bridge, Second Plain Bridge, etc....

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to provide a corrugated steel web pre-bent combined channel beam and its preparation method, which solves the above-mentioned common prestressed concrete. ; The structure of the reinforcement at the plate-beam junction is complex and the construction is difficult; the technical requirements for construction are high; the site pouring construction occupies a large area and the construction period is long, etc.

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