Split streamline steel-concrete composite box girder

A concrete and stacking box technology, applied in bridges, bridge materials, bridge construction, etc., can solve the problems of short service life, poor synergy and poor durability of bridge deck pavement, achieve large structural damping, improve resistance Wind stability, good aerodynamic shape

Active Publication Date: 2013-12-18
CCCC HIGHWAY BRIDNAT ENG RES CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The engineering practice of many long-span cable-stayed bridges and suspension bridges at home and abroad shows that the orthotropic steel deck roof of the steel box girder main girder and the automobile deck pavement laid on it cannot be well synergistic. The short service life and poor durability of surface paving is an international problem

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  • Split streamline steel-concrete composite box girder
  • Split streamline steel-concrete composite box girder
  • Split streamline steel-concrete composite box girder

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0027] Such as Figure 1 ~ Figure 3 as shown, Figure 1 ~ Figure 3 It is a structural schematic diagram of the split streamlined steel-concrete composite box girder of the present invention. The split streamlined steel-concrete composite box girder provided by the present invention includes: two or three steel-concrete composite box girder units arranged horizontally 1. An air nozzle 3 is provided on the outside of the steel-concrete composite box girder unit 1; a slot 10 with a horizontal width of 4m to 20m is provided between the steel-concrete composite box girder unit 1; and along the slot 10 Connecting beams 2 arranged at intervals of 4m to 20m in the longitudinal direction.

[0028] Among them, the steel-concrete ...

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Abstract

The invention discloses a split streamline steel-concrete composite box girder comprising two or three horizontal steel-concrete composite box girder units. An air nozzle is disposed outside each steel-concrete composite box girder unit. A channel 4m-20m in horizontal width is formed between each two steel-concrete composite box girder units. Connecting beams are disposed at intervals of 4m-20m longitudinally along the channels. A top plat of each steel-concrete composite box girder unit is a concrete plate, and a bridge deck pavement for automobiles is paved on the top plate; a bottom plate and an oblique web in each girder unit are reinforced steel plates; rails for trains or light rail vehicles are arranged on the bottom plate; each oblique web is provided with round, elliptical or polygonal light holes. The split streamline steel-concrete composite box girder has the advantages that wind proofing stability of bridges can be improved effectively, vortex-induced vibration is suppressed, durability of the bridge deck pavement is improved, and the girder is applicable to highway bridges or highway and light-railway bridges and is simple in structure and well economical.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a split-type streamlined steel-concrete composite box girder for long-span bridges. Background technique [0002] Split steel box girder is a main girder form of long-span cable-stayed bridges and suspension bridges. This type of main girder is used in Stonecutters Bridge in Hong Kong, Xihoumen Bridge in Zhoushan Liandao Project in Zhejiang, Dagu River Channel Bridge in Qingdao Bay Bridge It is used in many bridges such as Yi Sunshin Bridge in South Korea. [0003] The results of bridge field measurement and wind tunnel test show that, for long-span cable-stayed bridges and suspension bridges using split steel box girders as the main girder, due to the low damping of the main girder of the steel structure, the main girder may be relatively heavy under certain wind speed conditions. Large-amplitude vortex-induced vibration. The vortex-induced vibration of the bridge g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04E01D101/24E01D101/30
Inventor 刘高张喜刚
Owner CCCC HIGHWAY BRIDNAT ENG RES CENT
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