摘要
以京雄城际铁路黄固特大桥112.5 m钢箱拱为工程背景,针对其跨越京开高速、京开辅路,邻近京沪高铁,面临现有道路不能断、周边环境复杂、寒冷气候钢箱拱焊接作业、拱肋高度大、保证钢箱拱变形受控、钢箱拱顶推纠偏等难题,对寒冷气候下邻高铁跨高速的钢箱拱桥施工技术进行了研究:提出了一套跨越多幅车道城市繁忙高速公路步履式顶推施工方案,形成了一套针对寒冷气候下钢箱拱桥焊接控制措施,应用了一套紧邻既有运营高速铁路桥梁单侧吊装的施工方法,创新性提出并实施了一套钢箱拱桥步履式顶推平面整体扭转智能纠偏技术,创新性提出并应用了一套基于BIM 5D可视化实时顶推结构同步时空预警方法。现场实践表明,采用这些技术,确保了该钢箱拱桥施工质量、安全,得到了参建各方好评,相关经验值得借鉴。
Taking the 112.5-meter steel box arch bridge of the Huanggu Super Major Bridge on the Beijing-Xiong'an Intercity Railway as the engineering background,the construction technology of steel box arch bridge in cold climate close to high-speed railway and spanning highway is studied to solve the problems of the bridge spanning the Beijing-Kaifeng Expressway,the Beijing-Kaifeng Auxiliary Road,and adjacent to the Beijing-Shanghai High-speed Railway,as well as the inability to cut off existing roads,complex surounding environment,welding operations of steel box arch in cold climate,high arch rib heights,ensuring controlled deformation of steel box arch,and correcting the deviation of steel box arch through jacking,etc,A set of walking-type jacking construction schemes for spanning multiple lanes of busy urban highways are proposed,forming a set of welding control measures for steel box arch bridge in cold climate,applying a set of construction methods of unilateral hoisting adjacent to existing operating high-speed railway bridges,and innovatively proposing and implementing a set of walking-type jacking plane overall torsion intelligent correction technology for steel box arch bridge.An innovative BIM 5D-based real-time jacking structure synchronization space-time warning method is proposed and applied.Field practice has shown that the use of these technologies has ensured the construction quality and safety of the steel box arch bridge,and has been well received by all parties involved in the construction.The relevant experience is worth learning from.
作者
王琪
WANG Qi(China Railway 12th Bureau Group Municipal Engineering Co.Ltd.,Guangzhou Guangdong 511466,China)
出处
《铁道建筑技术》
2024年第3期82-86,共5页
Railway Construction Technology
基金
中铁十二局集团有限公司科技研发计划项目(2017-42)。
关键词
邻高铁
寒冷气候
跨高速
钢箱拱桥
顶推
智能纠偏
close to high-speed railway
cold climate
spanning highway
steel box arch bridge
jacking construction
intelligent deviation correction
