Pavement structure of steel bridge deck and construction method thereof

Abstract

The invention provides a pavement structure of a steel bridge deck and a construction method thereof. the pavement structure of the steel bridge deck comprises a first waterproof bonding layer, a modified epoxy asphalt macadam layer, a second waterproof bonding layer and an ultra-high performance structural layer which are sequentially paved on the surface of a steel plate of the steel bridge deck; the ultra-high performance structural layer is a pavement structural layer taking polymer modified asphalt as an adhesive, or comprises a pavement structural layer taking the polymer modified asphalt as the adhesive and a third waterproof bonding layer; the second waterproof bonding layer and the third waterproof bonding layer are the layers formed by at least one material of epoxy emulsified asphalt, polymer modified asphalt and polymer modified emulsified asphalt. The pavvement structure of the steel bridge deck provided by the invention has better resistance and stability.

Description

technical field [0001] The invention belongs to the technical field of steel bridge deck design, construction, maintenance and repair, and in particular relates to a pavement structure of a steel bridge deck and a construction method thereof. Background technique [0002] The main girder structure of the long-span cable load-bearing structure bridges built in my country basically adopts orthotropic steel panels and thin-layer pavement to form the bridge traffic system structure. The orthotropic steel deck structure has the problems of different elastic properties in the horizontal and vertical directions, and differences in the stiffness of the deck at different positions in the same direction, which affects the stiffness and deformation of the steel deck deck. higher requirements. Moreover, in our country, due to improper use conditions or problems in design and construction, the steel bridge deck pavement has cracks, oil spills, wrapping, rutting, looseness, shifting, del...

AI Technical Summary

Problems solved by technology

Due to the inconsistency of the mechanical analysis, calculation theory and method of the orthotropic steel deck pavement system, the difference in the material properties of the mixture used in the pavement, and the comprehensive influence of load, construction and environmental conditions, the design theory is not perfect

Lack of design methods for research on pathological characteristics cannot prescribe the right medicine

[0004] In the construction of steel bridge deck pavement, there are the following problems: epoxy asphalt concrete is mostly used in China at this stage, and epoxy asphalt adhesives and binders required for waterproof adhesive layers and surface layer mixtures are mainly imported from abroad. Its stability and durability are difficult to grasp and judge

[0005] In terms of maintenance of steel bridge deck pavement, my country's steel bridge deck pavement lacks effective preventive maintenance methods, and adverse environments such as high temperature, rainy, freezing, pollution, and overweight and overloaded operating conditions accelerate the development of diseases

[0006] According to the above analysis, the factors affecting the performance of pavement structures of steel bridge decks in my country are very complex, resulting in poor tolerance and poor stability of pavement structures of steel bridge decks.

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