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Spreading method for preventing steel box girder bridge face bituminous concrete from being pushed

A technology of asphalt concrete and steel box girder, which is applied in the field of material science and engineering, to improve the bonding condition, prevent the cracking and improve the shear strength of the interface

Active Publication Date: 2007-12-12
WUHAN MUNICIPAL CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the asphalt concrete pavement layer of the steel box girder bridge deck appears to be moved, the purpose of the present invention is to provide a paving method for preventing the asphalt concrete of the steel box girder deck from being moved, which can effectively prevent the steel box girder deck Progression cracking disease of asphalt concrete pavement, prolonging the service life of steel box girder deck

Method used

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  • Spreading method for preventing steel box girder bridge face bituminous concrete from being pushed

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Effect test

Embodiment 1

[0046] As shown in Figure 1, a kind of pavement method (the pavement method of orthotropic steel box girder deck) that prevents the asphalt concrete of steel box girder deck from moving comprises the following steps:

[0047]1) The upper surface of the steel box girder bridge deck steel plate 1 is subjected to sandblasting and derusting treatment, the cleanliness reaches Sa2.5 level, the roughness Ry reaches 50 μm, and the surface dust and sundries are removed;

[0048] 2) Paving anti-rust layer 2: Spray a layer of 0.5mm thick high-temperature-resistant HBW high-strength interface glue on the upper surface of the steel plate;

[0049] 3) Paving waterproof bonding layer 3: After the high-temperature-resistant HBW high-strength interface adhesive of the anti-rust layer is completely cured, spray a layer of high-temperature-resistant HBW high-strength interface adhesive with a thickness of 2 mm, and spray it with a thickness of 3.0 before curing. kg / m 2 Evenly spread a layer of ...

Embodiment 2

[0060] A kind of paving method (the pavement method of orthotropic steel box girder deck) that prevents the asphalt concrete of steel box girder deck from moving, is characterized in that comprising the steps:

[0061] 1) The upper surface of the steel box girder deck steel plate is subjected to sandblasting and derusting treatment, the cleanliness reaches Sa2.5 level, the roughness Ry reaches 60μm, and the surface dust and sundries are removed;

[0062] 2) Spray a layer of 1.0mm thick high-temperature-resistant HBW high-strength interface glue on the upper surface of the steel plate as an anti-rust layer;

[0063] 3) Paving the waterproof adhesive layer: After the high-temperature-resistant HBW high-strength interface adhesive of the anti-rust layer is completely cured, spray a layer of high-temperature-resistant HBW high-strength interface adhesive with a thickness of 2.5 mm, and spray it with a thickness of 5.0 before curing. kg / m 2 Evenly spread a layer of basalt particle...

Embodiment 3

[0073] A kind of paving method (the pavement method of orthotropic steel box girder deck) that prevents the asphalt concrete of steel box girder deck from moving, is characterized in that comprising the steps:

[0074] 1) The upper surface of the steel box girder bridge deck steel plate is subjected to sandblasting and derusting treatment, the cleanliness reaches Sa2.5 level, the roughness Ry reaches 70μm, and the surface dust and sundries are removed;

[0075] 2) Spray a layer of 1.5mm thick high-temperature-resistant HBW high-strength interface glue on the upper surface of the steel plate as an anti-rust layer;

[0076] 3) Paving the waterproof bonding layer: After the high-temperature-resistant HBW high-strength interface adhesive of the anti-rust layer is completely cured, spray a layer of high-temperature-resistant HBW high-strength interface adhesive with a thickness of 3mm, and use 4.0kg / m 2 Evenly spread a layer of basalt particles with a particle size of 2.36-4.75mm...

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Abstract

The invention relates to a asphalt pavement technique of a steel box beam bridge which features that: sandblasting the steel sheet to remove rust; 2, rust proofing layer pavement, 0.5 -1.5 mm high temperature resistant HBW high intensity glue; 3, water proof adherent layer pavement: 2-3 mm high temperature resistant HBW high intensity glue, and spread basalt particles or cutting steel fiber on before it coagulates; 4, lower layer pavement: coat on rough surface fast cracking modified emulsify asphalt and then spread GC-WHUT high viscosity modified asphalt and fiber contained intensity enhanced SMA-10 asphalt concrete for 2.5-3.5 cm; 5, upper layer pavement spread SMA-13 asphalt concrete over SMA-10 for 3.5 to 45 cm. The invention effectively eliminates cracking and displacing of asphalt concrete system of steel box bridge, lengthening the bridge service life.

Description

technical field [0001] The invention belongs to the field of material science and engineering, and in particular relates to a paving method for preventing asphalt concrete from moving on a steel box girder bridge deck. technical background [0002] Steel box girder bridges have technical and economic advantages such as light weight and significant economic efficiency, and are especially suitable for super-long-span bridges. They have been widely used at home and abroad. my country is a country with many rivers and lakes. There are many super-long-span bridges under construction and already built. There are several large-scale bridges with a span of more than 1000km along the Yangtze River. These bridges are mainly suspension or cable-stayed bridges, and the main girders are mainly made of Steel structure types, such as Jiangyin Yangtze River Highway Bridge, Wuhan Junshan Bridge and other large bridges have adopted the structure of orthotropic steel box girder deck. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12E01C7/18
Inventor 胡曙光张汉华林清谢先启丁庆军刘小星黄绍龙陈兆文刘沐宇林汉卿张厚记常玉玺常立新孙仲刘安仁邓利明陈凯华沈德风何浩何永佳王发洲
Owner WUHAN MUNICIPAL CONSTR GROUP