摘要
为了保证大六角高强度螺栓施工质量,以重庆粉房湾长江大桥钢桁梁杆件栓接(摩擦型高强度大六角头螺栓连接副)施工及质量控制为背景,从高强度螺栓的主要参数、高强度螺栓进场验收及保管、工地扭矩系数试验、扭力扳手的选择及使用、摩擦面的处理、大六角头高强度螺栓施工工艺、栓焊结合型高强度螺栓施工顺序、高强度螺栓的验收及防腐等方面进行讨论。实践表明,在高强度螺栓施工过程中,严格按照制定的质量控制要求进行施工,从施工方法、施工要求、施工工艺上,对涉及高强度螺栓质量的各个环节进行把关,可以较好地控制高强度螺栓的终拧合格率。
To ensure the construction quality of the big hexagonal head high-strength bolts,the construction quality of the bolted steel truss girder members(used with the frictional type big hexagonal head bolt sets)of Fenfangwan Changjiang River Bridge is cited as an example.The construction quality of the bolts is discussed from the following aspects of the principal parameters,checking,acceptance and storage of the bolts delivered to the construction site;the site torque moment test,selection and utilization of the tightening spanners,handling of the frictional surfaces;the construction technology of the bolts,construction sequences of the welded and bolted connection and also the checking,acceptance and corrosion protection of the bolts.The construction practice of the bridge proves that in the process of the construction,the construction strictly following the formulated quality control requirements for the high-strength bolts can well control the various procedures related to the construction quality of the bolts and control the qualification ratios of the bolts in all aspects of the construction methods,construction requirements and construction technology.
作者
张志伟
文世军
高琳琳
ZHANG Zhi-wei;WEN Shi-jun;GAO Lin-lin(China Construction Steel Structure Co.,Ltd.,Shenzhen 518084,China;Bridge Company,China Construction Sixth Engineering Co.,Ltd.,Tianjin 300457,China)
出处
《桥梁建设》
EI
CSCD
北大核心
2012年第A01期86-89,共4页
Bridge Construction
关键词
高强度螺栓
栓焊结合
施工工艺
质量控制
high-strength bolt
welding and bolting
construction technology
quality control
