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Combined bridge capable of prolonging fatigue life of shear connectors and manufacturing method thereof

A technology of fatigue life and manufacturing method, applied in the direction of bridges, bridge materials, bridge construction, etc., can solve the problems of fatigue failure, slippage of shear connectors, etc., to improve fatigue life, improve adhesion, and reduce template work. Effect

Pending Publication Date: 2018-10-19
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the composite bridges in the prior art, the shear connectors tend to slip and cause fatigue damage.

Method used

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  • Combined bridge capable of prolonging fatigue life of shear connectors and manufacturing method thereof
  • Combined bridge capable of prolonging fatigue life of shear connectors and manufacturing method thereof
  • Combined bridge capable of prolonging fatigue life of shear connectors and manufacturing method thereof

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Embodiment Construction

[0038] Please check Figure 1 to Figure 6 , a preferred embodiment of the composite bridge that improves the fatigue life of the shear connectors. The composite bridge that improves the fatigue life of the shear connectors includes several interconnected steel box girders 10, several shear connectors 20. Several epoxy mortar layers 30 and concrete bridge decks 40 .

[0039] The steel box girder 10 includes two steel girders 11 extending along the length direction of the bridge, and several first diaphragms 12 arranged at intervals along the length direction of the bridge, and each first diaphragm 12 is fixedly connected with two steel beams 11 , the top of each steel girder 11 is provided with a support plate 13 extending along the length of the bridge. In this embodiment, the first diaphragm 12 and the steel beam 11 are fixed by welding, and the support plate 13 and the steel beam 11 are also fixed by welding.

[0040] In this embodiment, rubber pads 50 are also provided be...

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Abstract

The invention discloses a combined bridge capable of prolonging the fatigue life of shear connectors and a manufacturing method thereof. Each steel box beam comprises two steel beams extending in thelength direction of the bridge and a plurality of first transverse diaphragms arranged in the length direction of the bridge at intervals. Each first transverse diaphragm is fixedly connected with thetwo corresponding steel beams, a supporting plate extending in the length direction of the bridge is arranged at the top end of each steel beam, and the shear connectors are fixedly connected to thesupporting plates; reserved holes which are the same as the shear connectors in number and are in one-to-one correspondence with the shear connectors are formed in the bottom end of a concrete deck slab, and when the concrete deck slab is placed on the steel box beams, each shear connector extends into the corresponding reserved hole; and an epoxy mortar layer is poured into the space between thetwo ends of each supporting plate and the concrete deck slab. According to the combined bridge, the bonding force of a bonding interface between the steel box beams and the concrete deck slab is effectively increased, the shear capacity of the bonding interface is improved, stress concentration of the shear connectors and the concrete deck slab is improved, and thus the fatigue life of the shear connectors is effectively prolonged.

Description

technical field [0001] The invention relates to a composite bridge and a manufacturing method for improving the fatigue life of a shear connector. Background technique [0002] Steel-concrete composite structure bridges are an important branch of current bridge engineering. Whether it is a super-large sea-crossing bridge across a deep and wide strait, or a variety of small and medium-span bridges to solve urban traffic, composite structure bridges are very useful. Because it can give full play to the respective advantages of different materials or systems, composite structure technology is also one of the important directions of the current bridge innovation system. The force between the steel beam and the concrete slab is transmitted through the shear connector, and the fatigue performance of the shear connector plays a key role in the life and normal use of the bridge. However, in the composite bridges in the prior art, the shear connectors tend to slip and cause fatigue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D12/00E01D21/00
CPCE01D12/00E01D21/00E01D2101/268
Inventor 林建平彭仲鑫霍静思周磊唐俊福
Owner HUAQIAO UNIVERSITY
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