Anti-shear reinforcing structure of steel beam

A technology for strengthening structures and steel beams, applied in truss structures, joists, girders, etc., can solve the problems of large thickness, affecting building functions, difficulty in procurement and welding, etc., to improve shear bearing capacity, simple construction, avoidance of Effects of Sourcing and Welding Challenges

Active Publication Date: 2015-09-02
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Anti-shear reinforcing structure of steel beam
  • Anti-shear reinforcing structure of steel beam
  • Anti-shear reinforcing structure of steel beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] According to the requirement of shear bearing capacity, the required thickness δ of the corrugated steel plate is more than 20 mm.

[0046] Then, if figure 2 , image 3 As shown, on both sides of the web 12 of the shear strengthening section 5, a flat steel plate 13 is welded closely to each other, and the thickness of the flat steel plate 13 is 1 / 3δ; then the corrugated steel plate is arranged on the flat steel plate 13 The outer side of the corrugated steel plate, the actual thickness of the corrugated steel plate is 1 / 6δ (in a word, the actual thickness of the corrugated steel plate is not greater than 20mm), so that the first horizontal section 9 of the corrugated steel plate is welded close to the flat steel plate 13, so that The oblique section 10 of the corrugated steel plate is welded to the two flanges 8 of the shear strengthening section 5; and the second horizontal section 11 of the corrugated steel plate is located inside the flange 8 of the shear strength...

Embodiment 2

[0048] According to the requirement of shear bearing capacity, the required thickness δ of the corrugated steel plate is not greater than 20mm.

[0049] Then, the actual thickness of the corrugated steel plate is the required thickness δ; figure 2 , Figure 4 As shown, the corrugated steel plate is arranged on both sides of the web 12 of the shear strengthening section 5, and at the point 7 of the vertical resultant force, the first horizontal section 9 of the corrugated steel plate is close to the The web 12 of the steel beam 1 is welded; the oblique section 10 of the corrugated steel plate is welded to the two flanges 8 of the shear reinforcement section 5; and the second horizontal section 11 of the corrugated steel plate is located at the The inside of the flange 8 of the shear reinforcement section 5 is welded with the second horizontal section 11 and the two flanges 8 of the shear reinforcement section 5 .

[0050] The shear strengthening structure of steel girders of t...

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Abstract

The invention provides an anti-shear reinforcing structure of a steel beam. The anti-shear reinforcing structure comprises anti-bending steel plate walls as well as steel beams at the upper and lower ends of the anti-bending steel plate walls, wherein the steel beams are H-shaped beams or I-shaped beams, equivalent eccentric crossed supports are crossed with the steel beams to form vertical resultant force application points, each steel beam comprises an anti-shear reinforcing section and a non-anti-shear reinforcing section, the height of the each steel beam is hb, the anti-shear reinforcing section comprises an area between the vertical resultant force application points corresponding to two adjacent anti-bending steel plate walls, and an area formed by outward extending of the vertical resultant force application points by 1/2 hb, two sides of webs of the anti-shear reinforcing sections are provided with corrugated steel plates, each corrugated steel plate comprises a first horizontal section, a second horizontal section and an oblique section, at the vertical resultant force application points, the first horizontal sections are tightly welded to the webs of the steel beams, and the oblique sections are welded to two flanges of the anti-shear reinforcing sections. According to the invention, the anti-shear bearing force of the steel beams is improved, the webs do not need to be heightened, so that the functions of a building are not influenced, and moreover, the difficulties in purchasing and welding due to adoption of a thick board or a height-variable beam as the steel beam are avoided.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/04E04B1/98E04G23/02
Inventor 孙飞飞李国强金华建
Owner TONGJI UNIV
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