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A bridge deck pavement method for orthotropic steel bridges

An orthotropic, bridge deck paving technology, applied in the direction of on-site coagulation pavement, bridges, bridge parts, etc., can solve the problem that the pavement structure cannot well meet the high temperature stability, low temperature deformation ability and fatigue resistance Cracking requirements, high temperature resistance of waterproof bonding system, difficult construction of bridge deck pavement, etc.

Active Publication Date: 2016-08-24
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the difficulty of bridge deck pavement construction of existing orthotropic steel bridges, high initial investment, high maintenance and repair costs in the later period, and the existing waterproof bonding system is not resistant to high temperature and has insufficient toughness , cannot be firmly bonded to the steel plate surface and the pavement layer, and the pavement structure cannot well meet the requirements of high temperature stability, low temperature deformation ability and fatigue cracking resistance during use, providing an orthotropic steel bridge Bridge deck pavement structure and pavement method

Method used

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  • A bridge deck pavement method for orthotropic steel bridges
  • A bridge deck pavement method for orthotropic steel bridges
  • A bridge deck pavement method for orthotropic steel bridges

Examples

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Effect test

Embodiment 1

[0055] A pavement method for a deck pavement structure of an orthotropic steel bridge, comprising the steps of:

[0056] (1) Sandblasting and derusting the steel bridge deck to make the cleanliness reach Sa2.5 level and the roughness is 70μm; according to 0.3kg / m 2 The amount of mica-containing epoxy resin used is artificially brushed and rolled to coat a mica-containing epoxy anti-corrosion layer;

[0057] (2) After 24 hours of mica-containing epoxy anti-corrosion coating curing, according to 2.5kg / m 2 The amount of solvent-free epoxy resin is used to scrape a solvent-free epoxy resin waterproof layer;

[0058] (3) Within 30 minutes of completing the solvent-free epoxy resin waterproof layer, according to 0.8kg / m 2 Sprinkle the hot-melt particles with a certain amount, so that half of them are trapped in the solvent-free epoxy resin waterproof layer to form a hot-melt particle bonding layer;

[0059] (4) After 48 hours of curing of the solvent-free epoxy resin waterproof l...

Embodiment 2

[0064] A pavement method for a deck pavement structure of an orthotropic steel bridge, comprising the steps of:

[0065] (1) Sandblasting and derusting the steel bridge deck to make the cleanliness reach Sa2.5 level and the roughness is 80μm; according to 0.3kg / m 2 The amount of mica-containing epoxy resin used is artificially brushed and rolled to coat a mica-containing epoxy anti-corrosion layer;

[0066] (2) After 24 hours of mica-containing epoxy anti-corrosion layer curing, according to 3.0kg / m 2 The amount of solvent-free epoxy resin is used to scrape a solvent-free epoxy resin waterproof layer;

[0067] (3) Within 30 minutes of completing the solvent-free epoxy resin waterproof layer, according to 0.8kg / m 2 Sprinkle the hot-melt particles with a certain amount, so that half of them are trapped in the solvent-free epoxy resin waterproof layer to form a hot-melt particle bonding layer;

[0068] (4) After 48 hours of curing of the solvent-free epoxy resin waterproof lay...

Embodiment 3

[0073] A pavement method for a deck pavement structure of an orthotropic steel bridge, comprising the steps of:

[0074] (1) Sandblasting and derusting the steel bridge deck to make the cleanliness reach Sa2.5 level and the roughness is 80μm; according to 0.4kg / m 2 The amount of mica-containing epoxy resin used is artificially brushed and rolled to coat a mica-containing epoxy anti-corrosion layer;

[0075] (2) After 24 hours of mica-containing epoxy anti-corrosion layer curing, according to 3.0kg / m 2 The amount of solvent-free epoxy resin is used to scrape a solvent-free epoxy resin waterproof layer;

[0076] (3) Within 30 minutes of completing the solvent-free epoxy resin waterproof layer, according to 1.0kg / m 2 Sprinkle the hot-melt particles with a certain amount, so that half of them are trapped in the solvent-free epoxy resin waterproof layer to form a hot-melt particle bonding layer;

[0077] (4) After 48 hours of curing of the solvent-free epoxy resin waterproof lay...

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Abstract

The invention discloses a bridge deck pavement method for an orthotropic steel bridge. The pavement method comprises the following steps: (1) performing sand-blasting and de-rusting treatment on a steel bridge panel, and coating a mica-containing epoxy anti-corrosion layer; (2) coating a solvent-free epoxy resin water-proof layer; (3) spreading a hot melt particle bonding layer which is partially sunken into the solvent-free epoxy resin water-proof layer, wherein the hot melt particles are high-polymer particles of which the softening point is greater than 150 DEG C; (4) paving a fine-particle asphalt mixture to form a high-elasticity modified asphalt pavement lower layer; (5) spreading a modified emulsified asphalt bonding layer; (6) paving a fine-particle or medium-particle asphalt mixture to form a high-elasticity modified asphalt pavement upper layer. By adopting the pavement method, the construction difficulty is lowered greatly, later maintenance is easy, the universality is high, a pavement lower structure is durable and long in service life, only the surface needs to be maintained in daily use, overall repeated maintenance is avoided, and the investment in a full life cycle is lowered.

Description

technical field [0001] The invention relates to the field of traffic and transportation engineering, in particular to a bridge deck paving method for orthotropic steel bridges. Background technique [0002] Steel bridge deck pavement is a single-layer or double-layer structure that is laid on the steel bridge deck to protect the steel plate and ensure the driving requirements of the car, with a thickness of about 40-80mm. It is generally composed of anti-rust layer, waterproof adhesive layer, pavement layer and so on. Under the influence of comprehensive factors such as driving load, wind load, temperature change and local deformation of the steel bridge deck, its force and deformation are far more complicated than that of road pavement or airport pavement, so it has great influence on its strength, deformation characteristics, temperature stability and fatigue durability. Sex and so on have higher requirements. At the same time, due to the special location of the pavement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12E01C7/32
CPCE01C7/32E01D19/083E01D19/125E01D2101/30
Inventor 郑晓光麻旭荣马骉
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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