Orthotropic steel bridge deck ductile concrete composite structure and construction method

A steel bridge deck and orthotropic technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as inability to coordinate force, poor coordinated deformation ability of orthotropic steel bridge decks, etc., to reduce the risk of fatigue cracking , strong shear resistance, and the effect of reducing weld fatigue cracking

Pending Publication Date: 2020-08-04
中交三公局第一工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of composite bridge deck concrete and orthotropic steel bridge deck have poor coordination and deformation ability, and cannot cooperate with force

Method used

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  • Orthotropic steel bridge deck ductile concrete composite structure and construction method
  • Orthotropic steel bridge deck ductile concrete composite structure and construction method
  • Orthotropic steel bridge deck ductile concrete composite structure and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: a kind of orthotropic steel deck ductile concrete composite structure, such as figure 1 , figure 2 with image 3 As shown, it includes an orthotropic steel bridge deck 1 , a grid mesh 2 and a ductile concrete layer 3 , and the grid mesh 2 is laid on the top of the orthotropic steel bridge deck 1 . The orthotropic steel bridge deck 1 is composed of a steel bridge deck 4, longitudinal rib members 5 and transverse rib members 6, the bottom of the steel bridge deck 4 is welded with a plurality of transversely spaced longitudinal ribs 7, and the longitudinal ribs 7 are integrated with the bottom of the steel bridge deck 4 Forming and rolling, the two sides of the longitudinal rib member 5 are fixedly welded to the bottom section of the longitudinal rib 7 . The top surface of the steel bridge deck 4 is fixedly welded with a plurality of shear studs 8 . The top surface of the steel bridge deck 4 is welded with a plurality of criss-cross vertical rib opening p...

Embodiment 2

[0057] Embodiment 2: a kind of construction method of orthotropic steel deck ductile concrete composite structure, such as Figure 4 shown, including the following steps:

[0058]S1. Prefabricate the orthotropic steel bridge deck 1 in stages in the factory, weld the shear nails in the factory, spray anti-rust paint, transport the orthotropic steel bridge deck 1 to the bridge site in sections, and lift the orthotropic steel bridge deck 1 by crane The steel bridge deck 1 is hoisted to the erected steel longitudinal girder for assembly, and adjusted accurately, then the orthotropic steel bridge deck 1 section assembly seam is welded, and then the spliced ​​weld is not welded to the orthotropic steel bridge at the factory The shear nails on the surface of panel 1 are welded on site, and the rust is removed on site, and the anti-rust paint is sprayed for anti-rust treatment. The cleanliness of rust removal reaches Sa2.5 level, and the roughness reaches 80-120 μm.

[0059] S2. Lay ...

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Abstract

The invention discloses an orthotropic steel bridge deck ductile concrete composite structure and a construction method, and relates to the technical field of bridge engineering. The key points of thetechnical scheme are as follows: the orthotropic steel bridge deck ductile concrete composite structure comprises an orthotropic steel bridge deck, a grid mesh and a tough concrete layer; a pluralityof longitudinal ribs are transversely arranged on the bottom surface of the steel bridge deck at intervals; shear nails are arranged on the top surface of the steel bridge deck; a plurality of criss-cross erecting rib perforated plates are arranged on the top surface of the steel bridge deck at equal intervals; and an SBS modified asphalt SMA pavement layer is paved on the top surface of the tough concrete layer. The combined structure can improve the overall rigidity of the steel bridge deck and improve the fatigue problem of the steel bridge deck system and has the advantages of light self-weight, high bearing capacity and simple structure, and can ensure that the steel bridge deck has a wide application range and good stress performance under various conditions; bridge construction cost is saved, and benefits are remarkable. The national key research and development plan subsidy is obtained, the subject name is the key technical research of the efficient construction of the combined structure urban bridge, and the subject number is 2017YFC070348.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, more specifically, it relates to an orthotropic steel deck ductile concrete composite structure and construction method for steel box girders. Background technique [0002] The pavement structure of the bridge deck is an important structure that bears the vehicle load of the bridge. It directly bears the repeated action of the wheel load and is one of the vulnerable parts of the bridge structure. At present, the bridge decks commonly used in engineering are divided into three types: concrete bridge decks, steel bridge decks and steel-concrete composite bridge decks. [0003] Concrete bridge deck has the advantages of high rigidity and low cost, but due to its heavy weight, low construction efficiency, and easy cracking, it is not economical when used in long-span bridges, mainly in small and medium-span bridges or projects with loose construction period requirements application. Due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01D21/00C04B28/00
CPCC04B28/00E01D19/125E01D21/00C04B18/08C04B18/146C04B14/02C04B14/068C04B14/48
Inventor 樊占东王俊伟崔登云李少辉王攀
Owner 中交三公局第一工程有限公司
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