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Orthotropic steel bridge deck structure

A steel bridge deck, orthotropic technology, applied in bridges, bridge construction, bridge parts, etc., can solve the problems of fatigue cracking maintenance and difficulty of steel bridge decks, and achieve the effect of convenient transportation and industrialized manufacturing.

Pending Publication Date: 2018-04-20
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an orthotropic steel bridge deck structure with simple structure, bolt-welded opening and closing longitudinal ribs and short construction period, so as to solve the problems of fatigue cracking and difficult maintenance of steel bridge decks in the prior art

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment discloses an orthotropic steel bridge deck structure, which includes a top plate 1, eight L-shaped longitudinal ribs 2, two bottom plates 3 and a transverse diaphragm 6.

[0036] see image 3 , the top plate 1 is a straight steel plate. The L-shaped longitudinal ribs 2 are arranged under the top plate 1 . The L-shaped longitudinal rib 2 is processed by traditional cold bending. The L-shaped longitudinal rib 2 includes a vertical section 201 and a straight section 202 . Wherein, the end of the vertical section 201 is provided with a bevel, and the bevel angle is 30°-60°. The vertical section 201 is welded to the top plate 1 through double-sided fillet welds 5 . The L-shaped longitudinal ribs 2 appear at intervals along the transverse bridge direction, and there are 4 in a group.

[0037] see figure 1 and image 3 , the bottom plate 3 is a straight steel plate. The bottom plate 3 is arranged under the L-shaped longitudinal rib 2 and appears at inte...

Embodiment 2

[0042] This embodiment discloses an orthotropic steel bridge deck structure, which includes a top plate 1 , six L-shaped longitudinal ribs 2 , a bottom plate 3 and a transverse diaphragm 6 .

[0043] The top plate 1 is a straight steel plate. The L-shaped longitudinal ribs 2 are arranged under the top plate 1 . see Figure 4 , the longitudinal rib 2 is integrally formed by hot rolling. The L-shaped longitudinal rib 2 includes a vertical section 201 and a straight section 202 . The vertical section 201 is welded to the top plate 1 through double-sided fillet welds 5 . The L-shaped longitudinal ribs 2 appear at intervals along the transverse direction.

[0044] see Figure 5 , the bottom plate 3 is a straight steel plate. The bottom plate 3 is arranged below the L-shaped longitudinal rib 2 . The bottom plate 3 is in contact with the straight section 202 of the L-shaped longitudinal rib 2 . The bottom plate 3 and the L-shaped longitudinal rib 2 are connected together by h...

Embodiment 3

[0049] This embodiment discloses a construction method for any orthotropic steel deck structure described in Embodiment 1 or 2, comprising the following steps:

[0050] 1) The factory manufactures the top plate 1, the L-shaped longitudinal rib 2, the bottom plate 3 and the transverse partition 6.

[0051] 2) Factory prefabricated bolt hole I2021 and bolt hole II301.

[0052] 3) Weld the top plate 1 and the L-shaped longitudinal rib 2 in the factory or on the construction site.

[0053] 4) Bolting the L-shaped longitudinal rib 2 and the bottom plate 3 in the factory or on the construction site.

[0054] 5) The factory or construction site performs welding on the diaphragm 6, the multi-chamber structure and the roof 1.

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Abstract

The invention provides an orthotropic steel bridge deck structure. The orthotropic steel bridge deck structure comprises a top plate, L-shaped longitudinal ribs and bottom plates. The L-shaped longitudinal ribs and the bottom plates form bolting-welding opening and closing longitudinal ribs and are connected to the top plate by means of double-sided welding, so as to effectively avoid natural initial cracks formed in incomplete fusion parts of single-side partial fusion penetration welding and to solve the problem of fatigue cracks are prone to appear due to stress concentration during the using process of a bridge deck. The opening and closing longitudinal ribs combine the advantages of opening ribs with the advantages of closed ribs, so that the orthotropic steel bridge deck structure iseasy to weld, good in anti-fatigue performance, high in bending-resistance and torsion resistance rigidity and easy to maintain and reinforce, and has wide application prospects in the field of steel-structure and composite-structure bridge engineering.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an orthotropic steel bridge deck structure. Background technique [0002] Orthotropic steel bridge deck (hereinafter referred to as "steel bridge deck") is a structural form composed of mutually perpendicular roofs, longitudinal ribs and diaphragms connected by welds and working together. It has light weight, large bearing capacity, and is suitable for It has the characteristics of wide range, fast construction speed and beautiful appearance. [0003] However, with the wide application of steel bridge decks and the continuous increase in service time, the fatigue problem of steel bridge decks has become more and more prominent in recent years. Among the various fatigue diseases of steel bridge decks, the most common and most harmful type is the fatigue cracks at the joints between the top plate of steel bridge decks and longitudinal ribs. The cracks at the roof-longi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12
CPCE01D19/125
Inventor 朋茜狄谨周绪红秦凤江
Owner CHONGQING UNIV
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