桥梁钢结构长期效防腐技术及在厦门第二东通道中的应用

介绍了国内外长期效防腐技术现状:一是较为成熟的以喷涂金属涂层作为底漆的复合涂层体系，二是以富锌底漆为配套的重防腐涂层体系。列举了3种典型桥梁钢结构大气区防腐涂层配套试验室测试差异。根据厦门第二东通道所处的环境特点，结合国内外桥梁钢结构防腐技术，为项目提出可行的钢箱梁外表面防腐蚀技术方案为"环氧富锌底漆-环氧中间漆-氟碳面漆"防腐涂层。 

Long-term Anti-corrosion Technology of Bridge Steel Structure and its Application in Xiamen Second East Passage

Here were introduced the currently situation of long-term anti-corrosion technologies in China and abroad:one was a relatively mature composite coating system with sprayed metal coating as a primer, and the other was a heavy-duty anti-corrosion coating system with zinc-rich primer as a supporting system. The differences of anti-corrosion performances of 3 typical anticorrosion coatings in atmospheric area of bridge steel structure were listed. According to the environmental characteristics of Xiamen Second East Passage, and combined with anti-corrosion technologies of domestic and foreign bridge steel structures, feasible anti-corrosion coating of epoxy zinc-rich primer-epoxy intermediate paint-fluorocarbon top coat was proposed for the outer surface of steel box girder.