混合梁桥大节段中跨钢梁吊装与合龙技术--以龙翔大桥为例  

Construction Technique for the Midspan Steel Beam Closure of Longxiang Bridge:The case study of Longxiang Bridge

作　　者：吴月红 陈搏 WU Yuehong;CHEN Bo(Foshan Jianying Development Co.,Ltd.,Foshan 528313,Guangzhou,China;Xiaoning Institute of Roadway Engineering,Guangzhou 510641,China)

机构地区：[1]佛山市建盈发展有限公司,广东佛山528313 [2]广州肖宁道路工程技术研究事务所有限公司,广州510641

出　　处：《科技和产业》2023年第7期241-247,共7页Science Technology and Industry

摘　　要：龙翔大桥主桥是采用大节段钢梁作为跨中结合段的大跨径双主跨刚构连续梁组合体系。依托龙翔大桥主桥施工提出一种新型提升系统,实现了悬臂梁施工、钢混结合段吊装、大节段跨中钢梁吊装3个施工阶段的快速转换。采用有限元法分析提升系统在施工各阶段的强度、刚度及稳定性验算,并与大节段跨中钢梁吊装时的位移实测数据进行对比,验证了提升系统能满足施工效率、安全和质量的要求,为类似桥梁在施工和合龙过程中提供了参考经验。The main bridge of Longxiang Bridge is a combination system of large-span double main span continuous rigid frame with steel beams as the mid-span joint section.Based on the construction of the main bridge of Longxiang Bridge,a new lifting system was proposed,which realized the rapid transformation of three construction stages:cantilever beam construction,steel-mixed section lifting and large-section mid-span steel beam lifting.The strength,stiffness and stability checking calculation of the lifting system at each stage of construction are analyzed by finite element method,and compared with the measured displacement data of the steel beam hoisting with large segment span,which verifies that the lifting system can meet the requirements of construction efficiency,safety and quality,and provides reference experience for similar bridges in the construction and closing process.

关 键 词：刚构连续梁桥 大节段钢梁吊装 合龙技术 桥梁施工 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]