Transverse Stiffening Device for Corrugated Steel Web Composite Beams

Abstract

The invention discloses a transverse reinforcement device for a corrugated steel web composite girder. The vertical steel plate of the H-shaped steel is a corrugated steel web, and a flat steel plate is fixed on the inner side of the corrugated steel web. A transverse connecting structure is arranged between the plates. Compared with the transverse connection structure of traditional composite beams, the present invention does not require welding of stiffeners to obtain higher out-of-plane rigidity and buckling strength, and the corrugated steel web can obtain higher shear resistance with a very thin thickness The combination of flat steel plate and corrugated steel web further improves the lateral stiffness of the web; the threaded steel rod strengthens the lateral restraint of the composite beam, which significantly improves the lateral deformation resistance and overall torsional resistance of the composite beam; The traditional angle steel welded connection uses threaded connection to fix the steel rod, which has the advantages of simple operation, fast construction, and convenient assembly and disassembly.

Description

technical field [0001] The invention relates to a reinforcing device in the field of bridge construction, in particular to a transverse reinforcing device for a corrugated steel web composite girder. Background technique [0002] Steel-concrete composite beam is a new type of structure developed on the basis of traditional concrete structure and steel structure, which makes full use of the superior tensile properties of steel and the superior compressive properties of concrete. Steel-concrete composite beams generally consist of steel beams, shear connectors and reinforced concrete slabs. The flexural and shear performance of composite beams is good, but the beam section itself is prone to deformation, torsion and other deformations after being subjected to eccentric forces. Setting up transverse connection structures can enhance the integrity of the main beam and improve the shear lag effect, and constraints may occur. The torsion and distortion effects of the beam are obv...

AI Technical Summary

Problems solved by technology

Composite beams usually use stiffeners welded on the web, and angle steels are welded on the stiffeners as the transverse connection structure between the steel beams. This method has the disadvantages that the welded parts are prone to rust, the position of the steel beams is difficult to adjust during construction, and it is inconvenient to disassemble later. and other shortcomings

In addition, in order to avoid local buckling before yielding, the traditional welded H-shaped steel beams must not have too high a height-to-thickness ratio. At the same time, measures such as stiffeners must be provided to enhance the stability of the web. The quantity is large, resulting in high cost, which limits its promotion and application

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