Steel box girder matched with cellular steel web plate

Abstract

The invention discloses a steel box girder matched with a cellular steel web plate. The steel box girder comprises two H-shaped steel or I-shaped steel used as web plate components of the steel box girder, further comprises a steel top plate, a steel bottom plate, a clapboard and a reinforcing rib and is characterized in that a plurality of through holes of the same shapes and intervals are formed in two web plates; the steel top plate and the steel bottom plate of the steel box girder are fixedly connected with upper flanges or lower flanges of the web plate components respectively; and a certain number of transverse clapboards and the reinforcing rib are configured. Compared with a solid web steel box girder, the cellular steel box girder disclosed by the invention has the advantages that the resistance capacity and bending resistance rigidity can be increased by about 30% under the condition of same steel use amount; the torsional rigidity of the cellular steel box girder is also greatly increased; simultaneously, the overall stability of the web plate cellular component and the local stability of an overhung flange of the box girder are improved; the use amount of steels is reduced, so that the cost is reduced; and furthermore, the steel box girder disclosed by the invention is attractive in appearance and convenient to maintain.

Description

technical field [0001] The invention belongs to a steel box girder, in particular to a steel box girder equipped with a honeycomb steel web. Background technique [0002] With the rapid development of my country's economic construction, it has also led to the rapid development of science and technology and applications in the field of civil engineering. Among them, the development of steel structures that are energy-saving and environmentally friendly and suitable for high-rise and long-span buildings and bridge buildings is particularly rapid. Before the 1980s, my country's steel structure technology level was low, and steel structure engineering applications were rarely used; to this day, the completed area of ​​steel structure buildings in my country exceeds more than half of the world's steel structure buildings. In high-rise and long-span buildings and bridge building structures, a structural component—steel box girder (or box-shaped steel girder) is usually used. Stee...

AI Technical Summary

Problems solved by technology

The steel box girder web members currently used in engineering are all solid webs (that is, solid steel plates). According to their mechanical characteristics, the strength of the steel cannot be fully utilized; among the disclosed technologies, there is a " Built-in honeycomb steel plate outsourcing steel high-strength concrete composite beam” (Chinese Patent Application No. 201210538584.9) reported that a honeycomb steel plate with the web upward is wrapped in the middle of the high-strength concrete composite beam, which can enhance the effective bonding with concrete and provide appropriate Shear bearing capacity; however, the honeycomb steel members of this structure have the disadvantages of small out-of-plane rigidity and easy instability, and there is still potential for continuous improvement and improvement

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