大跨径钢箱梁顶推施工关键技术研究  

KEY TECHNOLOGY OF PUSHING CONSTRUCTION OF IONG SPAN STEEL BOX GIRDER

作　　者：叶洪波 Ye Hong-bo

机构地区：[1]河南省交通规划设计研究院股份有限公司,郑州450000

出　　处：《建筑技术开发》2023年第12期82-84,共3页Building Technology Development

摘　　要：研究对郑州至洛阳高速公路龙门枢纽互通式立交内C匝道桥的施工过程进行了深入研究。针对该工程特点,选择了顶推施工方法进行钢箱梁的施工。通过设计合理的桥墩结构,选择正确的顶推设备,以及设置全面的安全保障措施,保证了施工的顺利进行。在设计中,特别考虑了钢梁横坡、路线半径、桥墩与路线前进方向交角等因素的影响,以满足施工的需要。In this study,the construction process of C-ramp bridge in the interchange of Longmen Junction of Zhengzhou to Luoyang expressway is deeply studied.According to the characteristics of the project,the jacking construction method is selected for the construction of steel box girder.The construction can be carried out smoothly by designing reasonable pier structure,selecting correct pushing equipment and setting up comprehensive safety measures.In the design,the influence of the transverse slope of the steel beam,the radius of the route,the intersection Angle between the pier and the direction of the route is especially considered to meet the needs of construction.

关 键 词：顶推施工 钢箱梁 桥墩设计 交角 安全保障 

分 类 号：U445.462[建筑科学—桥梁与隧道工程]