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Orthotropic steel bridge deck structure with HRP cover plate

A steel bridge deck, orthotropic technology, used in bridges, bridge construction, bridge parts, etc., can solve problems such as high welding process requirements, poor fatigue resistance, and easy cracking

Inactive 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 a HRP orthotropic steel bridge deck structure with simple structure, reasonable design and easy maintenance, so as to solve the problem of easy cracking of the existing steel bridge deck roof-longitudinal rib joint, high welding process requirements and poor fatigue resistance And other issues

Method used

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  • Orthotropic steel bridge deck structure with HRP cover plate
  • Orthotropic steel bridge deck structure with HRP cover plate
  • Orthotropic steel bridge deck structure with HRP cover plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This embodiment discloses an HRP orthotropic steel bridge deck structure, which includes an HRP cover plate 1 , longitudinal ribs 2 and transverse ribs 3 .

[0040] see figure 1 , the HRP cover plate 1 is a hot-rolled ribbed steel plate with four ribs 102 rolled on a flat plate 101 . The HRP cover plate 1 is continuously rolled and integrally formed. The ribs 102 appear on the lower surface of the plate 101 at intervals along the direction of the transverse bridge. The connecting portion between the flat plate 101 and the rib 102 adopts a circular arc-shaped gradual transition, which effectively reduces the stress concentration of the component at this position and improves fatigue resistance.

[0041] see Figure 4 , the longitudinal rib 2 is a closed rib with a U-shaped cross section. The plate thicknesses of the plate 101 and the rib 102 are different. The two ends 201 of the longitudinal rib 2 are respectively welded to two adjacent ribs 102 . The longitudinal...

Embodiment 2

[0045] This embodiment discloses an HRP orthotropic steel bridge deck structure, which includes an HRP cover plate 1 , longitudinal ribs 2 and transverse ribs 3 .

[0046] see Figure 5 and Figure 6 , the HRP cover plate 1 is a hot-rolled ribbed steel plate with eight ribs 102 rolled on a flat plate 101 . The HRP cover plate 1 is rolled by special rolls 5 . The ribs 102 appear on the lower surface of the plate 101 at intervals along the direction of the transverse bridge. The smooth transition between the flat plate 101 and the rib 102 can effectively reduce the stress concentration of the component at this position and improve fatigue resistance.

[0047] The longitudinal rib 2 is a closed rib with a trapezoidal cross section. The plate thicknesses of the plate 101 and the rib 102 are different. The two ends 201 of the longitudinal rib 2 are respectively welded to two adjacent ribs 102 . The longitudinal rib 2 is welded to the rib 102 through a butt full penetration we...

Embodiment 3

[0051] This embodiment discloses an HRP orthotropic steel bridge deck structure, which includes an HRP cover plate 1 , longitudinal ribs 2 and transverse ribs 3 .

[0052] see Figure 7, the HRP cover plate 1 is a hot-rolled ribbed steel plate with five ribs 102 rolled on a flat plate 101 . The HRP cover plate 1 is rolled by special rolls 5 . The ribs 102 appear on the lower surface of the plate 101 at intervals along the direction of the transverse bridge. The smooth transition between the flat plate 101 and the rib 102 can effectively reduce the stress concentration of the component at this position and improve fatigue resistance.

[0053] The longitudinal rib 2 is an open rib, which adopts the cross section form of unequal angle steel. The plates 101 and ribs 102 have the same plate thickness. The longitudinal rib 2 is welded to the rib 102 through a butt full penetration weld 4 . In this embodiment, the longitudinal rib 2 is integrally formed by hot-rolled section ste...

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Abstract

The invention provides an orthotropic steel bridge deck structure with an HRP cover plate. The orthotropic steel bridge deck structure comprises a hot-rolled ribbed cover plate, a plurality of longitudinal stiffened ribs and transverse ribs. The HRP cover plate has the characteristics of good integrity and high rigidity. The connection part between a plane plate and ribs adopts an arc-shaped gradual transition to effectively avoid the problem of excessive local stress on a steel bridge deck under the action of concentrated wheel loads. Welding seams are arranged on the positions, where the stress amplitude is relatively small, of web plates of longitudinal ribs, and the welding process is changed from single-side partial penetration welding to butt-joint complete penetration welding so asto effectively improve the anti-fatigue performance of the steel bridge deck. The orthotropic steel bridge deck structure with the HRP cover plate has the advantages of simple structure, reasonable stress, high durability, convenient maintenance and reinforcement and 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 HRP orthotropic steel bridge deck structure. Background technique [0002] Orthotropic steel bridge deck structure (hereinafter referred to as "steel bridge deck") has become the main structural form of long-span steel bridge deck due to its characteristics of large bearing capacity, light weight, and low structural height. At present, more than a thousand large steel bridges using orthotropic steel deck structures have been built at home and abroad. There must be some potential problems behind the rapid and large-scale construction, and the most prominent one at present is the fatigue crack of the steel bridge deck. Especially with the rapid growth of my country's traffic volume and increasingly serious overloading and overloading, some steel bridge decks have experienced bridge deck pavement damage, structural deformation, and weld cracking after less than 10 yea...

Claims

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Application Information

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IPC IPC(8): E01D19/12
CPCE01D19/125
Inventor 周绪红朋茜狄谨
Owner CHONGQING UNIV
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