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Grooved steel-concrete combination beam

A technology of reinforced concrete and composite beams, applied in bridges, buildings, etc., can solve problems such as complicated construction techniques, difficulties in the application of channel beams, and reduced durability, so as to avoid steel bar binding, simple support and connection structure, and high durability Good results

Inactive Publication Date: 2008-06-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing channel beams all use prestressed reinforced concrete schemes, which are limited by the characteristics of prestressed concrete, especially the overly complex construction technology and easy cracking and reduced durability after cracking have brought many difficulties to the application of channel beams

Method used

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  • Grooved steel-concrete combination beam
  • Grooved steel-concrete combination beam
  • Grooved steel-concrete combination beam

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Experimental program
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Embodiment Construction

[0011] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] The invention provides a channel-shaped steel beam-concrete composite beam that can significantly improve structural bearing capacity, rigidity, crack resistance and construction performance. exist figure 1 , figure 2 with image 3 In the structural schematic diagram of the channel steel beam-concrete composite beam shown, the shear connector 3 is fusion-welded on the prefabricated upper open steel box girder. Concrete 2 is poured on the inner side of the steel box girder and integrated with the steel box girder. Concrete 2 is equipped with a certain number of stressed steel bars and structural steel bars.

[0013] Construction procedure of the present invention is:

[0014] The channel-shaped steel beam-concrete composite beam of the present invention is composed of steel structure and post-cast concrete. The two parts are comb...

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Abstract

The invention relates to a groove steel-concrete integration beam, belonging to the bridge support element area, which can be used in track bridge; railway bridge; and road Bridge. The invention comprises a steel box beam whose top is open, concrete filled in the inner side of steel box beam and the anti-cutting connection element welded on the inner side of steel box beam. wherein, said open steel box beam is formed by a bottom plate and a middle plate, whose sections are in U or W shape; the anti-cutting connection element can integrate the steel beam and the concrete as a whole to display the anti-compression property of concrete; the steel plate can resist the pulling stress of each direction and avoid surface breakage; and the anti-cutting connection element can transfer the shearing force between steel box beam and concrete and avoid their separation. The invention has the advantages of simple operation, application of avoiding surface breakage and wider application prospect, as well as the advantages of initial stress concrete groove beam.

Description

technical field [0001] The invention relates to a channel steel girder-concrete composite girder applicable to urban track bridges, railway bridges and highway bridges. It belongs to the technical field of bridge structures. Background technique [0002] Traditional urban rail viaducts generally adopt a box-shaped or T-shaped cross-section, and the overall height of the building is large. It not only has a great impact on the urban landscape, but also creates a sense of oppression to the people on the ground, and it is easy to cause noise disturbance to nearby residents. The channel beam is a structural form that organically combines the functions of bearing, noise reduction and operation system, and can simultaneously achieve the purpose of reducing the height of the structure and reducing visual and noise pollution. Compared with the overhead girder bridge, the U-shaped channel girder can use the bottom plate to support the track and the train, reduce the track elevation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D2/00
Inventor 聂建国
Owner TSINGHUA UNIV
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