Corrugated steel web steel structure simply supported box girder

Abstract

The invention relates to box beams, and discloses a corrugated steel web steel structure simply-supported box beam which comprises two or more corrugated steel webs (2), a top steel plate (1), a bottom steel plate (3) and an end socket end plate (4). The corrugated steel webs (2) are arranged between the top steel plate (1) and the bottom steel plate (3), the top steel plate (1) is connected with the corrugated steel webs (2) through welding, and the corrugated steel webs (2) are connected with the bottom steel plate (3) through welding. The end socket end plate is arranged, so rigidity of the cross section and strength of a connecting end of a beam body are improved, the corrugated shape of each web is composed of a straight line section, a transition section and a circular arc section, the straight line section can be effectively connected with a circular arc turn angle through the transition section, and thus the problem of stress concentration when the straight line section is directly connected with the circular arc section is solved; meanwhile, a structure which is one-piece but discontinuous is adopted between simply supported beams, so the phenomenon of beam body falling off of an overload vehicle under the action of large loads or the action of an earthquake is effectively prevented.

Description

technical field [0001] The invention relates to a box girder, in particular to a simply supported box girder with a corrugated steel web plate steel structure. Background technique [0002] At present, traditional box girders or steel box girders generally have a height-to-thickness ratio of about 100:1 according to the requirements of shear buckling resistance. Up to 300:1 and above. For the corrugated steel web used in the existing corrugated steel web box girder, the corrugation of the web is composed of a straight line segment and an arc segment, and stress concentration is likely to occur at the connecting part of the straight line segment and the arc segment. Contents of the invention [0003] The present invention aims at the disadvantages of poor shear resistance and buckling resistance of ordinary box girders in the prior art, and the corrugated steel webs of box girders are prone to stress concentration, resulting in short service life of the box girder, etc., a...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the disadvantages of poor shear resistance and buckling resistance of ordinary box girders in the prior art, and the corrugated steel webs of box girders with corrugated steel webs are prone to stress concentration, resulting in short service life of the box girder. The end plate of the head can improve the cross-sectional rigidity of the beam body and the strength of the connecting end. The waveform of the web is composed of three parts: a straight line section, a transition section, and an arc section. The transition section can effectively connect the straight line section and the arc section to solve the problem. The problem of stress concentration when the straight line section and the arc section are directly connected, and the simply supported beams adopt a conjoined and discontinuous structure to effectively prevent the waveform of the beam body falling under the action of overloaded vehicles and large loads or earthquakes Steel Web Steel Structure Simply Supported Box Girder

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