邻近营业线门式钢箱梁施工技术研究  

Research on Construction Technology of Portal Steel Box Girder Adjacent to Business Line

作　　者：殷承校 YIN Chengxiao(China Railway 11th Bureau Group Second Engineering Co.,Ltd.,Shiyan 442000,Hubei,China)

机构地区：[1]中铁十一局集团第二工程有限公司,湖北十堰442000

出　　处：《工程技术研究》2025年第1期53-55,共3页Engineering and Technological Research

摘　　要：文章采用桥梁吊装与支架法基本原理,结合梅山特大桥63#及64#墩现场施工工况,提出在既有线路上方进行钢箱梁顶推施工的方案,并分析了施工工艺流程及施工注意事项。工程实践表明,综合运用分片吊装现场焊接、抗倾覆验算、监控量测等手段,能够有效解决场地受限、长大距离悬挑导致发生倾覆及营业线行车事故等问题,相应的施工工艺和管控措施可供类似工程参考。Based on the basic principle of bridge hoisting and support method,combined with the site construction conditions of 63#and 64#piers of Meishan Grand Bridge,this paper puts forward the scheme of carrying out incremental launching construction of steel box girder above the existing line,and analyzes the construction process and construction precautions.The engineering practice shows that the comprehensive use of segmental hoisting,onsite welding,anti-overturning checking,monitoring and measurement and other means can effectively solve the problems of site limitation,overturn caused by long-distance overhang and traffi c accidents on business lines.The corresponding construction technology and control measures can be used as reference for similar engineering.

关 键 词：门式墩 顶推施工 营业线 安全管理 

分 类 号：U215.8[交通运输工程—道路与铁道工程]