大跨径劲性骨架钢管拱桥拱肋施工过程仿真分析  

Simulation Analysis on the Construction Process of Arch Ribs of Long-Span Steel Tube Skeleton Arch Bridge

作　　者：张二华[1] 黄珍[1] 

机构地区：[1]西南交通大学土木学院,四川成都610031

出　　处：《重庆交通大学学报（自然科学版）》2013年第S1期852-855,共4页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：大跨径拱桥的拱肋施工是一个复杂的过程。为保证施工安全,最终成桥线形和受力状态满足设计和验收规范要求,需要施工控制仿真。应用有限元结构计算理论与计算机技术,结合主跨140 m的某上承式劲性骨架混凝土拱桥,对钢管混凝土拱桥拱肋施工过程进行仿真分析,给出了仿真计算的具体步骤并得出结论:仿真分析过程中,拱脚处上平纵联杆件应力普遍较大。为同类型桥梁仿真计算提供参考和借鉴。The rib construction of large-span steel tube concrete arch bridge is a complex course.In order to ensure that the final bridge line and the forced status can meet the design and checking requirements,it is needed to adopt the simulation of the construction control.Under the background of a deck concrete-filled steel tube arch bridge whose span was 140 meters,a simulation analysis on the construction progresses of the rib was carried out by using the finite element structural computation theory and computer technology.The actual steps of simulation calculation were given and a conclusion was also obtained that the stress of the top longitudinal bracing rods near arch foot is larger during the simulation analysis,which provides reference for the same kind of bridge construction.

关 键 词：劲性骨架 缆索吊装-斜拉扣挂法 仿真分析 

分 类 号：U448.222[建筑科学—桥梁与隧道工程]