Shear strengthening of steel beam ends at beam-to-column joints

Abstract

The invention provides a shearing-resistance reinforcing structure at the end parts of steel girders at a node of a beam column. The shearing-resistance reinforcing structure comprises a buckling-restrained steel plate wall, steel girders and peripheral columns, wherein the end parts of the steel girders are connected with peripheral columns, an equivalent eccentrically-intercrossed support of the buckling-restrained steel plate wall and the steel girders are intersected at vertical resultant force application points; each steel girder comprises a shearing-resistance reinforcing section and a non-shearing resistance reinforcing section, the height of the steel girder is hb, and the shearing-resistance reinforcing section comprises an area between the end part of each steel girder and the corresponding vertical resultant force application point and an area where the vertical resultant force application point extends outwards for 1 / 2hb; the two sides of a web of the shearing-resistance reinforcing section are provided with corrugated steel plates which comprise first horizontal sections, second horizontal sections and slant sections, and the first horizontal sections are closely welded with the steel girder webs at the vertical resultant force application points; the slant sections are welded with two flange edges of the shearing-resistance reinforcing section, and the corrugated steel plates are welded with the flange edges of the peripheral columns at the end parts of the steel girders. According to the shearing-resistance reinforcing structure provided by the invention, the building function can be beneficially realized; meanwhile, the purchasing and welding difficult problems caused by adopting thicker webs can be prevented.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a shear reinforcement structure at the end of a steel beam at a beam-column node. Background technique [0002] As a structural energy-dissipating member with excellent performance, the buckling-resistant steel plate wall has very stable hysteretic characteristics and good low-cycle fatigue characteristics, which can greatly improve the lateral stiffness and bearing capacity of the structure, and at the same time provide the structure with plastic energy dissipation. It provides a considerable additional damping ratio, thereby reducing the seismic response of the structure, so it has a wide application prospect. [0003] In order to avoid the adverse effects of additional axial force and additional bending moment on the surrounding columns after the steel plate wall is connected to the surrounding columns, the buckling-resistant steel plate wall is generally conn...

AI Technical Summary

Problems solved by technology

[0005] However, if the height of the section is increased, the heightened steel girder will inevitably affect the realization of the building function; and if the web of the steel girder is thickened, it is often difficult to purchase and weld due to the thickness

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