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Streamline steel-concrete folding case beam

A streamlined steel and laminated box technology, applied in bridges, bridge materials, bridge construction, etc., can solve the problems of easy cracking of concrete and high torsional rigidity, and achieve concrete cracking, high torsional rigidity, and good wind resistance Effect

Inactive Publication Date: 2009-04-22
CCCC HIGHWAY CONSULTANTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a streamlined steel-concrete composite box girder, which has high torsional rigidity and good wind resistance, effectively solves the problem that the bridge deck concrete is easy to crack, and improves the durability of the entire bridge deck structure

Method used

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  • Streamline steel-concrete folding case beam
  • Streamline steel-concrete folding case beam
  • Streamline steel-concrete folding case beam

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Embodiment Construction

[0029] See Figure 1~6Shown is a streamlined steel-concrete composite box girder of the present invention. The laminated box girder is composed of steel girder structure, laminated bridge deck and air nozzle structure 16; the air nozzle structure 16 is placed on both sides of the laminated box girder, and the entire laminated box girder presents a streamlined single-box cross-section. The main steel girder structure is composed of outer steel longitudinal beam 1, inner steel longitudinal beam 21, steel small longitudinal beam 2, steel cross beam 3, steel floor 4 and steel inclined floor 5; outer steel longitudinal beam 1, inner steel longitudinal beam 21, steel The small longitudinal beams 2 and the steel cross beams 3 are arranged orthogonally to form a steel beam grid; the inner steel longitudinal beams 21 and the steel cross beams 3 divide the laminated box girder into several chambers. The outer steel longitudinal beam 1, the inner steel longitudinal beam 21, and the stee...

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Abstract

The invention discloses a streamlined steel-concrete superimposed box girder, which relates to the technical field of bridge engineering and is used for a long-span bridge girder. Two sides of the superimposed box girder are provided with tuyere structures, and a bridge panel adopts a superimposed structure consisting of prefabricated concrete slabs and a post-poured concrete layer. When the box girder is in use, the superimposed box girder is a streamlined single-box single-chamber or single-box multi-chamber cross section; the tuyere structures are polygonal open thin-walled structures; and longitudinal-transverse prestress is applied in the superimposed bridge panel. The box girder effectively improves the torsional rigidity and wind-resistant stability of the section of the girder, remarkably improves the integrity and durability of the bridge panel, and expands the application of superimposed girders in cable-stayed bridges and other long-span bridges.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a streamlined steel-concrete composite box girder structure for long-span bridges. Background technique [0002] The steel-concrete composite beam used for the main girder of the bridge is a structure in which the steel structure of the main girder and the concrete bridge deck are combined to work together through shear connectors. Compared with steel box girder bridges, composite girder bridges use concrete decks instead of orthotropic steel decks, saving steel, and the deck pavement is simple and reliable; compared with concrete box girder bridges, composite girder bridges have The remaining part adopts steel structure, which greatly reduces the weight of the upper structure and saves the cost of the lower structure. [0003] For long-span bridges such as composite girder cable-stayed bridges, the commonly used composite girder cross-section forms include the compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04E01D101/24E01D101/30
Inventor 刘高唐亮吴文明徐国平王秀伟
Owner CCCC HIGHWAY CONSULTANTS
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