摘要
研究目的:艰险山区峡谷地区一般场地狭小且施工条件较为恶劣,为解决山区峡谷地区重型钢桁梁架设装配对接难度大、主缆线形控制困难、架设施工时间长、安全隐患多等难题,本文以丽香铁路金沙江特大桥钢桁梁架设工程为依托,针对重型钢桁梁架设中的共性难题,研发了大跨山区铁路悬索桥钢桁梁智能吊装系统,该系统通过物联网和云计算相关技术,将钢桁梁架设中关键要素和工艺信息数字化,通过科学的传感采集、数据分析、反馈控制等流程环节,以期将钢桁梁架设过程转换为精准受控的自动化作业,节约项目成本,保障项目安全,提高施工效率。研究结论:(1)本文研发的钢桁梁智能吊装系统针对山区重型钢桁梁的架设提供了一套较为可行的系统解决方案,经过工程实施后验证是可行的,能够满足施工的需求,解决了山区峡谷复杂环境下悬索桥重型钢桁梁架设拼接的难题,相比于传统模式实现了使用上和操作上的便捷性,能够大幅度提高施工效率;(2)经过工程验证和实施,研发的钢桁梁智能吊装系统可以实现测控精度厘米级,反馈控制时间响应速度秒级,实现了平均4.5 h完成双节段重型钢桁梁的架设工作,整个架设过程控制双节段钢桁梁横桥向摇摆倾角在1.23°以下,顺桥向摇摆倾角在1.51°以下,缆塔偏位在5 cm以下,吊具中心转角均满足在±1.5°以内的要求;(3)采用基于物联网和云计算技术的钢桁梁智能吊装系统,可以实现数字化钢桁梁架设施工作业,形成了一整套可推广的原创技术成果,可为今后类似大吨位钢桁梁等结构施工提供宝贵经验,在山区和大吨位钢梁架设施工中具有广泛的推广前景。
Research purposes:In difficult and dangerous mountainous and canyon areas,the site is generally small and the construction conditions are relatively poor.To solve the problems of difficult erection and splicing of heavy steel truss girders,difficult control of the main cable shape,long installation and construction time,and multiple safety hazards in mountainous and canyon areas,based on the steel truss girder erection project of Jinsha River Super Large Bridge on Lijiang-Shangrila Railway,aiming at the common problems in the erection of heavy steel truss girders,this paper has developed an intelligent hoisting system for steel truss girders of long-span mountain railway suspension bridge.The system digitizes the key elements and processes in the erection of steel truss girders through the Internet of Things and cloud computing related technologies,and through scientific sensor collection,data analysis,feedback control and other process links,in order to transform the steel truss girder erection process into precise and controlled automated operations,save project costs,ensure project safety,and improve construction efficiency.Research conclusions:(1)The developed intelligent hoisting system for steel truss girders provides a set of feasible system solutions for the erection of heavy steel truss girder in mountainous areas,which has been verified to be feasible after the project implementation,and can meet the construction needs and solve the difficult problem of erection and splicing of heavy steel truss girder in suspension bridges in complex environments.Compared with the traditional mode,it realizes the convenience of use and operation.It can significantly improve construction efficiency.(2)After engineering verification and implementation,the developed intelligent hoisting system for steel truss girders can achieve measurement and control accuracy of centimeter level,feedback control time response speed of second level,and achieve an average of 4.5 hours to complete the installation of double segment heavy s
作者
毛伟琦
李小珍
王翔
MAO Weiqi;LI Xiaozhen;WANG Xiang(Southwest Jiaotong University,Chengdu,Sichuan 610031,China;National Key Laboratory of Bridge Intelligent and Green Construction,Wuhan,Hubei 430034,China)
出处
《铁道工程学报》
EI
CSCD
北大核心
2024年第3期52-58,共7页
Journal of Railway Engineering Society
基金
国家自然科学基金资助项目(52278463,52208505)。
关键词
铁路悬索桥
钢桁梁
架设施工
智能监控与吊装
研发
工程应用
railway suspension bridge
steel truss girder
installation construction
intelligent monitoring and lifting
research and development
engineering application
