钢桥梁焊接技术现状及未来展望

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Abstract：With the improvement of bridge design level as well as the enhancement of processing equipment and construction equipment levels，China's bridge construction has achieved rapid development. Various bridges with unique designs and having a certain influence in the history of world bridgeconstruction have emerged continuously. Welding operation is one of the important processes in manufacturing steel bridges and is crucial for ensuring the durabilityof steelbridges.This paper，combined with examples of steel bridge construction inrecent years，briefly introduces the application status and achievements of the welding technologies for weathering bridge steel and high-performance bridge steel in China，as wellas the applicationstatus ofdouble-wireand multi-wire submerged arc high-effciency welding technology，mechanical correction technology for welding deformation and automated welding technology in the manufacturing process of steel bridges，and also makes a prospect on the development prospects of steel bridge welding technology.

Keywords： stee bridges; high-performance bridge steel;automated welding; high-eiciency welding; welding deformation

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近20年来，我国大跨度钢桥梁建设蓬勃发展，建造实力和水平大幅提升，相关数据表明，我国大跨度的悬索桥、斜拉桥、拱桥及梁桥按照跨度排名，在全球前10位占比达到 70% 以上。（剩余4942字）