摘要
主跨拱肋为钢结构、边跨拱肋为钢筋混凝土结构、横梁为钢混叠合梁的组合结构体系是一种新型的、特点鲜明的"组合式"中承式系杆拱桥。结合370 m跨(55 m+260 m+55 m)奉化江特大桥工程,介绍钢-混组合体系中承式系杆拱桥的设计分析过程。首先介绍桥梁的总体设计,然后介绍结构静力分析、稳定性分析,以及动力分析的结果,最后提出一些关于此类组合体系-中承式系杆拱桥设计的建议。
The combined structure system of the main span arch rib as the steel structure,the side span arch rib as the steel reinforced concrete structure and the crossbeam as the steel-concrete composed beam is a new type and bright characteristic of the combined half-through bowstring arch bridge.The article introduces the design analysis process of a half-through bowstring arch rib in the steel-concrete combination system by the 370-m span(55+260+55)m of Fenghua River Bridge Project.The article introduces the master design of bridge,the static analysis and the stability analysis of structure,and the result of dynamic analysis,and puts forward some proposals for the design of the half-through bowstring arch bridge in this combination system.
出处
《城市道桥与防洪》
2012年第6期109-113,11,共5页
Urban Roads Bridges & Flood Control
关键词
系杆拱
中承式系杆拱桥
静力特性
稳定性能
钢-混组合体系
bowstring arch,half-through bowstring arch bridge,static characteristic,stability performance,steel-concrete combination system
