Structure and method of felting bridge floor made from steel box girder in large span

Abstract

The pavement structure of the long-span steel box girder bridge deck is a long-span steel box girder deck pavement structure, especially a bridge deck pavement structure directly laid on the orthotropic steel plate. It is epoxy asphalt concrete, and the lower layer is the pavement structure of poured asphalt concrete, that is, the waterproof layer (2) is on the steel box girder bridge deck (1), and the lower bonding layer (3) is on the upper layer of the waterproof layer (2). ), the top of the lower bonding course (3) is cast asphalt concrete (4), the top of pouring asphalt concrete (4) is the upper bonding course (5), and the top of the upper bonding course (5) is Epoxy asphalt concrete (6). The steps of paving are: a. Anti-corrosion coating treatment on the cleaned steel bridge deck; b. Spraying the lower bonding layer; c. Spreading the poured asphalt mixture on the lower layer; knot layer; e. Pave the upper layer of epoxy asphalt concrete; f. Carry out natural maintenance on the steel bridge deck pavement until the curing degree of epoxy asphalt reaches more than 85%.

Description

technical field [0001] The invention relates to a long-span steel box girder bridge deck pavement structure, in particular to a bridge deck pavement structure directly laid on orthotropic steel plates, belonging to the technical field of transportation engineering. Background technique [0002] With the rapid growth of my country's economy, a number of long-span highway bridges across rivers and seas have started construction one after another, and have been completed and opened to traffic one after another. In the history of bridge construction in my country, there has been an unprecedented upsurge in the construction of long-span bridges. Among them, the orthotropic steel bridge deck system has been more and more used due to its light weight and economy. [0003] Researches at home and abroad show that the stiffened steel box girder is one of the effective main girder structures, and it is an ideal structural system in terms of its strength and...

AI Technical Summary

Problems solved by technology

Premature high-temperature rutting, lateral pushing, cracking and other diseases of the steel bridge deck pavement not only endanger the safety of high-speed driving, but also affect the service life of the steel bridge deck, and also cause certain social impacts

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