Steel bridge and steel bridge and concrete shear-resistance combination structure

Abstract

The invention discloses a steel bridge and a steel bridge and concrete shear-resistance combination structure. The steel bridge and concrete shear-resistance combination structure comprises a truss-type supporting structure and a herringbone shear key; the herringbone shear key comprises first shear-resistance plates, second shear-resistance plates and shear rods, one ends of the first shear-resistance plates are connected with the middles of the second shear-resistance plates, and the first shear-resistance plates and the second shear-resistance plates are distributed in the longitudinal direction to form the herringbone shear key. Through the arrangement, a shear groove is formed between the first shear-resistance plates and the second shear-resistance plates of the shear key, the shearkey and reinforced concrete form a whole through the shear rods, and the ability to resist the shearing force is improved advantageously; meanwhile, the truss-type supporting structure adopts a prefabricated technology, on the construction site, high-strength anchoring bolts pass through reserved holes of special steel angles and are tightened and fixed by high-strength anchoring nuts, and thus splicing of supporting structure trusses is completed; and the prefabricated and spliced truss structure can reduce the self weight and has the advantages that construction is convenient, and the building quality is improved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a shear-resistant reinforced composite structure of a steel bridge. Background technique [0002] The shear key is an important component of the shear resistance in the steel-concrete composite structure. Its function is to effectively transmit the horizontal shear force on the steel bridge and prevent the two from sliding and separating horizontally at the interface, resulting in a large difference in elastic modulus. The steel structure and concrete structure form a whole and work together. [0003] Many countries have studied the use of various shear key devices in structural composite beams. Different shear keys have different effects on the performance of bridges. The existing shear keys mostly use traditional welding stud shear keys or PBL shear keys. , but due to the small cross-sectional area of ​​the traditional shear key, the shear bearing value of the tradit...

AI Technical Summary

Problems solved by technology

[0003] Many countries have studied the use of various shear key devices in structural composite beams. Different shear keys have different effects on the performance of bridges. The existing shear keys mostly use traditional welding stud shear keys or PBL shear keys. , but due to the small cross-sectional area of ​​the traditional shear key, the shear bearing value of the traditional shear key is reduced, and the utilization rate of the material is low

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