摘要
针对矮塔斜拉桥索鞍精确定位及施工安全控制问题,以长河特大桥为工程背景,提出“分级定位+动态纠偏”技术,结合三维激光扫描与建筑信息模型(building information modeling,BIM)协同监测平台实现索鞍空间坐标偏差≤2 mm的目标。通过振弦式传感器与智能分析系统,优化斜拉索索力分布及合龙段温度-位移修正模型,最终合龙误差仅1.8 mm。研究表明,索鞍精确定位技术能提高定位精度,可为同类桥梁施工提供技术参考。
Based on the problems of precise positioning and construction safety control of cable saddles in extradosed cable-stayed bridges,taking Changhe Grand Bridge as the engineering background,the"hierarchical positioning+dynamic correction"technology is proposed.Combined with 3D laser scanning and Building Information Modeling(BIM)collaborative monitoring platform,the goal of limiting cable saddle spatial coordinate deviations to within 2 mm is achieved.Through the vibrating wire transducer and intelligent analysis system,the stayed cable force distribution and the temperature-displacement correction model of the closure section are optimized,and the final closure error is only 1.8 mm.The research shows that the precise positioning technology for cable saddles can improve the positioning accuracy and provide technical reference for the construction of similar bridges.
作者
张海军
ZHANG Haijun(Anhui Construction Engineering Water Resources Development and Investment Group Co.,Ltd.,Bengbu 233000,Anhui,China)
出处
《工程技术研究》
2025年第18期77-79,共3页
Engineering and Technological Research
关键词
索鞍精确定位
动态纠偏
施工监测
BIM协同控制
cable saddle precise positioning
dynamic correction
construction monitoring
BIM collaborative control
