宽幅大跨径组合梁下承式钢拱桥关键问题研究  

Research on Key Problems of Through Steel Arch Bridge with Wide&Long Span Composite Beam

作　　者：辛太康 李文龙 XIN Tai-kang;LI Wen-long(Lin Tung-Yen&Li Guo-Hao Consultants Shanghai Co.,Ltd.,Shanghai 200437,China)

机构地区：[1]上海林同炎李国豪土建工程咨询有限公司,上海200437

出　　处：《中国市政工程》2024年第2期48-50,144,共4页China Municipal Engineering

摘　　要：组合梁钢拱桥因其受力合理、造价经济、外形美观等特点得到了广泛运用。根据某宽幅大跨径组合梁钢拱桥设计实践,对拱肋、端横梁、吊杆部分构造进行优化研究,形成了独特的四索面分叉拱做法,兼顾结构外观、力学性能和工程经济性。通过理论分析和荷载试验检测,验证该类设计优化的安全性,可为同类型桥梁设计提供参考借鉴。Composite beam steel arch bridge has been widely used because of its reasonable stress,economic cost,beautiful appearance and other characteristics.According to the design practice of a wide and long-span composite beam steel arch bridge,the structure of arch rib,end beam and suspender was optimized,forming a unique four cable plane bifurcation arch method,taking into account the structural appearance,mechanical properties and engineering economy.Through theoretical analysis and load test detection,the safety of this kind of design optimization is verified,which can provide reference for the design of the same type of bridge.

关 键 词：宽幅 组合梁 钢拱桥 优化 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]