Shear-reinforced structure of steel beams

Abstract

The invention provides a shear-resisting reinforced structure of steel girders, including buckling-resistant steel plate walls and steel girders at the upper and lower ends thereof, the steel girders are H-shaped or I-shaped steel girders, and the equivalent eccentric cross bracing of the buckling-resistant steel plate walls is connected with steel girders. The beams intersect at the point where the vertical resultant force acts; the steel beam includes a shear-reinforced section and a non-shear-reinforced section, take the beam height of the steel beam as hb, and the shear-reinforced section includes the vertical resultant force corresponding to two adjacent buckling-resistant steel plate walls The area between the action points and the area where the vertical force action point extends outward for 1 / 2hb; corrugated steel plates are provided on both sides of the web plate of the shear reinforcement section, and the corrugated steel plates include the first horizontal section, the second horizontal section and the oblique Section, at the point where the vertical resultant force acts, the first horizontal section is welded close to the web of the steel beam; the oblique section is welded to the two flanges of the shear-reinforced section. The invention improves the shear bearing capacity of the steel girder without increasing the height of the web to affect the building function, and at the same time avoids the problems of procurement and welding caused by the use of thick plates or variable-height beams for the steel girder.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a shear-resistance strengthening structure of steel beams. 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 connected on both sides, th...

AI Technical Summary

Problems solved by technology

[0006] 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

Images