寒冷地区公路混凝土桥梁病害养护及修复技术研究  

Research on Disease Maintenance and Repair Technology of Highway Concrete Bridge in Cold Area

作　　者：戴鹏飞 Dai Pengfei(Liaoning Province Expressway Operation Management Co.,Ltd.,Shenyang 110003,China)

机构地区：[1]辽宁省高速公路运营管理有限责任公司,沈阳市110003

出　　处：《北方交通》2022年第12期17-20,共4页Northern Communications

摘　　要：混凝土结构桥梁在我国桥梁工程中占有很大的比重,由于混凝土本身的多孔结构,容易受自然环境的影响产生病害。对寒冷地区混凝土桥梁发生冻融破坏、盐冻破坏的原因进行了分析,对混凝土桥梁桥面伸缩缝、泄水孔、防撞墙病害提出修复措施。对常用的几种混凝土防腐涂层体系进行了试验研究,结果表明:溶剂型环氧-溶剂型环氧-氟碳面漆的涂层体系对混凝土结构的耐久性提升更好。The concrete structure bridge occupies a large proportion in the bridge engineering in our country. Because of the porous structure of the concrete itself, it is easy to be affected by the natural environment to produce diseases. The causes of freeze-thaw damage and salt-freezing damage of concrete bridges in cold area are analyzed, and the repair measures for the diseases of expansion joints, drain holes and anti-collision walls of concrete bridge decks are put forward. The experimental research on the several common concrete anti-corrosion coating systems is carried out. The results show that: the coating system of solvent epoxy-solvent epoxy-fluorocarbon topcoat can improve the durability of concrete structure better.

关 键 词：寒冷地区 混凝土桥梁 冻融破坏 盐冻破坏 修复措施 防腐涂料 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]