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Construction technology of composite structure layer of bridge deck of long-span cable structure bridge

A technology of construction technology and combined structure, applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problem of deck paving of steel bridge decks. The material and structure, technology, and quality control have not been fully solved, and the use effect is not very good. Good and other problems, to achieve the effect of not easy to permeate and corrode steel plate, high bond strength, good waterproof performance

Active Publication Date: 2018-11-20
重庆勇峰建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the long-span steel bridge deck pavements published in the prior art and above patents adopt double-layer epoxy or single-layer pouring structure, but there are still many problems in the process of use, and the use effect is not very good, at most 3 years At least one year will require partial repair or maintenance, and some even need to be milled and re-paved. It can be said that the deck pavement of steel bridge decks has no problems in terms of materials, structure, technology, and quality control. fully resolved

Method used

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  • Construction technology of composite structure layer of bridge deck of long-span cable structure bridge

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Effect test

Embodiment 1

[0024] A construction technology for the combined structure layer of a long-span cable structure bridge deck, the technical scheme is:

[0025] The process includes at least three parts: epoxy asphalt bonding layer construction process, pouring asphalt concrete construction process and epoxy asphalt concrete construction process. The construction process is:

[0026] Step A. Before construction, the bridge deck debris must be removed to ensure that the bridge deck or the lower bearing layer is dry, clean, free of oil, foreign matter, and dust. The surface temperature of the lower bearing layer is greater than 10°C. Before the construction of the epoxy asphalt waterproof bonding layer, the steel plate must be derusted and anti-corrosive treatment to reach Sa2.5 level, sprayed with epoxy zinc-rich paint, and reach the specified curing period before epoxy asphalt bonding Agent construction;

[0027] Step B. Epoxy asphalt binder coating, add epoxy asphalt and phenolic epoxy resin into t...

Embodiment 2

[0037] A construction technology for the combined structure layer of a long-span cable structure bridge deck, the technical scheme is:

[0038] The process includes at least three parts: epoxy asphalt bonding layer construction process, pouring asphalt concrete construction process and epoxy asphalt concrete construction process. The construction process is:

[0039] Step A. Before construction, the bridge deck debris must be removed to ensure that the bridge deck or the lower bearing layer is dry, clean, free of oil, foreign matter, and dust. The surface temperature of the lower bearing layer is greater than 10°C. Before the construction of the epoxy asphalt waterproof bonding layer, the steel plate must be derusted and anti-corrosive treatment to reach Sa2.5 level, sprayed with epoxy zinc-rich paint, and reach the specified curing period before epoxy asphalt bonding Agent construction;

[0040] Step B. Epoxy asphalt binder coating. Add epoxy asphalt and polybutadiene epoxy resin r...

Embodiment 3

[0050] A construction technology for the combined structure layer of a long-span cable structure bridge deck, the technical scheme is:

[0051] The process includes at least three parts: epoxy asphalt bonding layer construction process, pouring asphalt concrete construction process and epoxy asphalt concrete construction process. The construction process is:

[0052] Step A. Before construction, the bridge deck debris must be removed to ensure that the bridge deck or the lower bearing layer is dry, clean, free of oil, foreign matter, and dust. The surface temperature of the lower bearing layer is greater than 10°C. Before the construction of the epoxy asphalt waterproof bonding layer, the steel plate must be derusted and anti-corrosive treatment to reach Sa2.5 level, sprayed with epoxy zinc-rich paint, and reach the specified curing period before epoxy asphalt bonding Agent construction;

[0053] Step B. Epoxy asphalt binder coating, add epoxy asphalt and glycidyl ester epoxy resin ...

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Abstract

The invention belongs to the technical field of bridge construction and relates to a construction process for a composite structural layer of a long-span cable structure bridge deck. The constructionprocess for the composite structural layer of the long-span cable structure bridge deck is characterized in that the main steps comprise epoxy asphalt bonding layer construction, cast asphalt concreteconstruction and epoxy asphalt concrete construction. The construction process for the composite structural layer of the long-span cable structure bridge deck has the advantages that the bonding strength is high, diseases such as delamination and sliding are not easy to generate, the waterproof performance is good, the composite structural layer is not easily permeable to cause corrosion of a steel plate, the service life of the bridge is prolonged and so on; the experience is accumulated for the domestic steel bridge deck pavement construction, and the service life of the steel bridge deck pavement satisfies design requirements.

Description

Technical field [0001] The invention relates to a construction process for a composite structure layer of a large-span cable structure bridge deck, which belongs to the technical field of bridge construction. Background technique [0002] The force and deformation of steel bridge decks are much more complicated than highway pavements. Because they will deform to a certain extent, they have higher requirements on the strength, deformation ability, temperature characteristics and fatigue durability of the bonding layer and pavement layer. , Steel bridge deck paving technology is a worldwide technical problem that affects the durability of steel bridges. In the prior art, the steel bridge deck paving basically adopts the asphalt concrete system. From the perspective of the selected materials and construction methods, a scheme design of "three materials and four structures" is basically formed: (1) Germany and Japan Representative Gussasphalt scheme; (2) Asphalt mastic concrete (Mas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12E01C19/18C04B26/26
CPCC04B26/26E01C19/185E01D19/125C04B18/12C04B18/142C04B20/0048C04B2103/0068C04B22/064
Inventor 王婵李坤
Owner 重庆勇峰建筑工程有限公司