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Novel steel-concrete combined beam

A technology for reinforced concrete slabs and composite beams, which is applied in the field of bridges and building support components and composite beams. It can solve the problems of manpower consumption, working hours, inability to fully guarantee, and affect the safety and reliability of composite beams, and achieve large bonding force and shear resistance. Strong cutting ability and material saving effect

Inactive Publication Date: 2006-05-03
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shear connectors of the existing steel-concrete composite beams are all single-piece, mainly in the form of cylindrical head welding stud connectors, channel steel connectors, bent steel bar connectors, etc. In order to ensure the effective combination of steel and concrete slabs and the The strength of the composite beam requires several, dozens or even dozens of shear connectors to be arranged on each meter of steel beam. These connectors must be welded with the steel beam, which consumes a lot of manpower and hours, and increases the The cost and construction difficulty of the beam, at the same time, because the welding quality is greatly affected by human factors, it cannot be fully guaranteed, thus affecting the safety and reliability of the composite beam

Method used

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  • Novel steel-concrete combined beam
  • Novel steel-concrete combined beam
  • Novel steel-concrete combined beam

Examples

Experimental program
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Effect test

Embodiment 1

[0017] like figure 1 , image 3 As shown, an H-shaped steel-concrete composite beam of the present invention comprises a reinforced concrete slab 1, a lower flange of the steel beam 2, two upper flanges of the steel beam 3 and a steel beam web 4, and one side of the steel beam web 4 is sawtooth The shape of the sawtooth is an inverted isosceles trapezoid. The sawtooth protrudes from the upper flange of the steel beam. The sawtooth edge of the web is cut from the H-shaped steel web along the broken line. The entire sawtooth extends into the upper reinforced concrete slab to form the shear connection of the composite beam. The upper flange 3 of the 2 steel beams is composed of two steel plates, and the height is located at the root of the sawtooth. The lower flange 2 of the steel beam and the web 4 of the steel beam are the lower flange and web of H-beam, and the 2 upper flanges and the web are welded by welding connect.

Embodiment 2

[0019] like figure 2 , Figure 4 As shown, a box-shaped steel-concrete composite beam of the present invention includes a reinforced concrete slab 1, a lower flange 2 of a steel beam, an upper flange 3 of a steel beam and two steel beam webs 4, and one side of the steel beam web 4 is a belt The sawtooth edge, the shape of the sawtooth is an inverted isosceles trapezoid, the sawtooth protrudes from the upper flange of the steel beam, the sawtooth edge of the web is cut from the steel plate along the broken line, the upper flange 3 of the steel beam is located between the two sawtooth edge webs, and the height is located at the root of the sawtooth, and the upper Flange and 2 webs are connected by welding.

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Abstract

The invention discloses a new type concrete reinforced composite beam in the bridge and architectural support component domain, which comprises the following parts: concrete reinforced plate, steel girder lower flange, steel girder upper flange and steel girder web, wherein one edge of steel girder web is sawtooth edge; the sawtooth extends out of the steel girder upper flange; entire sawtooth extends in the shearing composite beam connection part of upper concrete reinforced plate.

Description

technical field [0001] The invention relates to a composite beam, in particular to a new type of steel-concrete composite beam applied to bridges and industrial and civil building floor systems, which belongs to the scope of bridges and building supporting components. Background technique [0002] Compared with reinforced concrete beams, steel-concrete composite beams combine steel beams and concrete slabs to be stressed together. Compared with reinforced concrete beams, the structure height and self-weight can be reduced, thereby reducing the cross-sectional size and size of vertical load-bearing members. The foundation load is reduced, the construction formwork and support are reduced, and the construction is convenient. Compared with steel beams, it can reduce the amount of steel used, increase rigidity, improve stability, and reduce the height of the structure to enhance corrosion resistance and durability. It has been widely used in multi-storey building floor system a...

Claims

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Application Information

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IPC IPC(8): E04C3/293E04B5/29
Inventor 黄炳生
Owner NANJING UNIV OF TECH
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