Pavement structure and pavement method of combined steel bridge deck

Abstract

The invention discloses a pavement structure and a pavement method of a combined steel bridge deck. The pavement structure is characterized by being formed by a four layer structure from bottom to top; the four layer structure comprises a roughness layer, an integration layer, a comprehensive waterproof system layer and a cold-mixing resin asphalt drainage concrete layer; the roughness layer is sprayed on a smooth steel plate; the integration layer is laid on the roughness layer; the comprehensive waterproof system layer is laid on the integration layer; the cold-mixing resin asphalt drainage concrete layer is laid on the comprehensive waterproof system layer. Advanced materials which are researched and developed independently are utilized, the performance of the various materials and the functions of the structural layer are maximized, and accordingly the steel plate is changed into a rough interface from a smooth interface. The self-problems of pavement of the steel bridge deck, which are difficult to solve, can be solved; the risk of a drainage functional layer of the urban elevated design is greatly reduced through the comprehensive waterproof system layer; accordingly the safety performance, the environment-friendly performance and the durability of the pavement are greatly improved.

Description

technical field [0001] The invention relates to an urban viaduct steel bridge deck pavement, in particular to a pavement structure and a pavement method of a combined steel bridge deck. Background technique [0002] After the 21st century, with the continuous advancement of science and technology, the transportation construction industry has developed rapidly. Due to the advantages of light weight, convenient and fast construction, and large carrying capacity and spanning capacity, steel box girder bridges are increasingly used in expanding fields. At present, urban Steel box girder bridges are basically used for viaducts in locations with large spans, large traffic impacts, and relatively harsh service conditions. However, the steel box girder bridge deck pavement is more complex than the cement concrete bridge. [0003] First, unlike the cement concrete bridge pavement, which has a relatively thick beam-slab support, the thickness of the steel plate is relatively thin, ge...

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Problems solved by technology

[0005] Third, the steel plate is very easy to rust when exposed to water, which not only has a major impact on the bonding and shear resistance between the pavement layers, but also corrodes the steel box girder, affecting the service life;

my country's research on steel bridge deck pavement technology is relatively late. It was not until the end of the 20th century, starting from the application of steel bridge deck pavement of Humen Bridge in Guangdong, that China officially entered the period of application of asphalt concrete pavement for long-span steel box girder bridges. However, it is mainly based on importing complete sets of pavement technology from abroad. The applicability of steel bridge deck pavement technology is often insufficient, and the severe conditions of domestic steel bridge deck use are not considered. Therefore, relatively serious damage to the pavement layer generally occurs. Early damage phenomenon, such as cracks, ruts and shifting, etc.

[0008] In addition, the surface functional layer of urban elevated steel bridge deck generally adopts traditional dense asphalt concrete or large-pore pavement structure, but there are many problems in the actual application of these two pavement structure layers: 1) Anti-skid of pavement in rainy days 2) Road traffic noise seriously affects people's normal life; 3) Asphalt pavement and cement pavement have a large heat absorption rate, the temperature in urban areas is rising day by day, and the phenomenon of urban heat island is becoming more and more obvious; 4 ) The bearing capacity of the road surface layer is weak, and the phenomenon of further compaction appears; 5) The pore attenuation is very obvious in a short time, and the drainage function is seriously affected; The durability has a serious impact; 7) The deicing agent or acid rain will corrode the structural layer, causing peeling and potholes on the road surface

[0009] Patent No. 200910152726 and Application No. 201110298046.2 both disclose a steel bridge deck pavement structure and pavement method, which mainly make different improvements for each functional layer of the steel bridge deck, but for the waterproof layer of the pavement layer, they all It is still coated with waterproof asphalt paint, so this single waterproof system is easy to be damaged and cause water seepage after long-term extrusion and deformation of the road surface, causing serious internal safety hazards