Orthotropic steel plate-fiber grating reinforced concrete combined deck structure

A technology of reinforced concrete and fiber grid, which is applied to the coagulation pavement, bridges, bridge parts and other directions laid on site, can solve the problems of fatigue cracking of steel bridge deck structure, damage of asphalt mixture pavement layer, hidden safety hazards, etc. Achieve the effect of enhancing shear resistance, preventing cracking of pavement layers, and preventing cracking between layers

Inactive Publication Date: 2013-11-27
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the operation time increases, it is easy to cause damage to the asphalt mixture pavement and fatigue cracking of the steel bridge deck structure, causing safety hazards

Method used

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  • Orthotropic steel plate-fiber grating reinforced concrete combined deck structure
  • Orthotropic steel plate-fiber grating reinforced concrete combined deck structure
  • Orthotropic steel plate-fiber grating reinforced concrete combined deck structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 and 2 As shown, the orthotropic steel plate-fiber grid reinforced concrete composite bridge deck structure of the present invention comprises an orthotropic steel plate 1, and the orthotropic steel plate 1 is provided with shear keys 5 in the form of screws around the orthotropic steel plate 1. A layer of fiber grid 2 with a thickness of 2mm and a grid spacing of 50mm×50mm is laid on the upper layer. The fiber grid 2 is glued to the surface of the orthotropic steel plate 1 through high-performance epoxy resin, and 30mm thick concrete is laid on the fiber grid 2 in turn. 3. A fiber grid 2 with a thickness of 1mm and a grid spacing of 50mm×50mm, a 10mm thick concrete 3 and a 20mm thick modified asphalt SMA wear layer 4. The fiber grid 2 is made of woven fiber grid cloth, and the latitudinal fiber bundles and radial fiber bundles are made of carbon fiber orthogonally woven and cured with epoxy resin to form a whole. The concrete 3 is made of epoxy resin c...

Embodiment 2

[0024] Such as image 3 and 4 As shown, the orthotropic steel plate-fiber grid reinforced concrete composite bridge deck structure of the present invention comprises an orthotropic steel plate 1, and the two sides of the orthotropic steel plate 1 are provided with a shear bond 5 in the form of a screw, and on the orthotropic steel plate 1 A layer of fiber grid 2 with a thickness of 2mm and a grid spacing of 25mm×25mm is laid on the upper layer. The fiber grid 2 is glued to the surface of the orthotropic steel plate 1 through high-performance epoxy resin, and 20mm thick concrete is laid on the fiber grid 2 in turn. 3. A fiber grid 2 with a thickness of 2mm and a grid spacing of 25mm×25mm and a 30mm thick epoxy asphalt mixture wear layer 4. The fiber grid 2 is made of woven fiber grid cloth, the weft fiber bundles are made of glass fibers, and the radial fiber bundles are made of carbon fibers, which are woven orthogonally and cured with epoxy resin to form a whole. The concret...

Embodiment 3

[0026] Such as Figure 5 and 6 As shown, the orthotropic steel plate-fiber grid reinforced concrete composite bridge deck structure of the present invention comprises an orthotropic steel plate 1, and the two sides of the orthotropic steel plate 1 are provided with a shear bond 5 in the form of a screw, and on the orthotropic steel plate 1 A layer of fiber grid 2 with a thickness of 2mm and a grid spacing of 25mm×25mm is laid on the upper layer. The fiber grid 2 is glued to the surface of the orthotropic steel plate 1 through high-performance epoxy resin, and 30mm thick concrete is laid on the fiber grid 2 in turn. 3, and 20mm thick epoxy asphalt mixture wearing course 4. The fiber grid 2 is made of woven fiber grid cloth, the weft fiber bundles are made of glass fibers, and the radial fiber bundles are made of carbon fibers, which are woven orthogonally and cured with epoxy resin to form a whole. Concrete 3 is made of epoxy resin concrete. The orthotropic steel plate 1 is a...

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Abstract

The invention discloses an orthotropic steel plate-fiber grating reinforced concrete combined deck structure. The deck structure comprises an orthotropic steel plate, fiber gratings, concrete and a wearing layer. The fiber gratings, the concrete and the wearing layer are arranged on the upper side of the orthotropic steel plate successively. The fiber grating is connected with the orthotropic steel plate on the lower side of the fiber grating through a high-performance epoxy resin adhesive, and shear keys are arranged on the periphery of the orthotropic steel plate as required so as to increase the bonding strength. The deck structure has the advantages of being high in interlayer shear resistant capacity, anti-stripping, water-proof, high in rigidity and strength, and good in toughness, is provided with stable high-temperature stability and low-temperature crack resistance, is capable of effectively preventing interlayer cracking, reducing the fatigue cracking risk of the orthotropic steel plate and pavement layers and improving plus or minus bending moment resistance of the steel plate, and is applicable to building and repairing of various steel deck structures.

Description

technical field [0001] The invention relates to the technical field of bridge deck pavement structures, in particular to a composite deck structure that can be used as a composite bridge deck in bridge structures, specifically a waterproof, high toughness, and high strength orthotropic steel plate - Fiber grid reinforced concrete composite bridge deck structure. Background technique [0002] The traditional orthotropic steel deck system is mostly composed of orthotropic steel deck and asphalt mixture pavement. As the operation time increases, it is easy to cause damage to the asphalt mixture pavement layer and fatigue cracking of the steel bridge deck structure, causing potential safety hazards. Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the prior art, and provide an orthotropic steel plate-fiber grid reinforced concrete combination with high toughness, high strength, anti-cracking, waterproof and good high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01C7/32E01C11/18
Inventor 方海徐超刘伟庆
Owner NANJING TECH UNIV
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