桥梁高强度螺栓技术现状与发展趋势  

The Status Quo and Development Trend of Bridge High-Strength Bolt Technology

作　　者：程玉琨 伊建军 吕福钢 Cheng Yukun;Yi Jianjun;Lv Fugang

机构地区：[1]中交公路规划设计院有限公司,北京100088 [2]桥梁智能与绿色建造全国重点实验室,湖北武汉430034 [3]中铁桥研科技有限公司,湖北武汉430034

出　　处：《江苏建材》2025年第1期113-115,共3页Jiangsu Building Materials

摘　　要：从生产制造、表面处理施工质量控制等方面,提出提升高强度螺栓服役质量相关技术手段:一方面,采用耐候型或涂层防腐高强度螺栓并保证均匀稳定的扭矩系数,保证扭矩法施工质量并提升服役寿命,避免后期出现螺栓应力腐蚀断裂问题;另一方面,进行专业的现场施拧质量控制与工艺指导,采用第三代电动扭矩扳手和智能化施拧技术方案,提升现场施拧精度并通过施拧扭矩全部上传存储落实现场管理。On the one hand,the use of weather-resistant high-bolt or coated anti-corrosion high-strength bolts to ensure a uniform and stable torque coefficient ensures the construction quality of the torque method and improves the service life,so as to avoid the problem of stress corrosion fracture of high-bolts in the later stage;On the other hand,professional on-site screwing quality control and process guidance are carried out,and the third-generation electric torque wrench and intelligent screwing technology scheme are adopted to improve the accuracy of on-site screwing,and on-site management is implemented through uploading and storing all screwing torques.

关 键 词：高强度螺栓 延迟断裂 应力腐蚀 电动扳手 

分 类 号：U445[建筑科学—桥梁与隧道工程]