京沪高速铁路(32+108+32)m中承式钢箱拱若干设计问题探讨  

Study of Several Design Issues About a Half-Through Steel Box Arch Bridge with Spans(32+108+32) m on Beijing-Shanghai High-Speed Railway

作　　者：吴大宏[1] 李凤芹[1] 刘爱乔 杨欣然[1] 

机构地区：[1]铁道第三勘察设计院,天津300142

出　　处：《桥梁建设》2007年第3期56-59,共4页Bridge Construction

摘　　要：京沪高速铁路北京特大桥在跨京开高速公路时,为满足立交要求并追求较好的景观效果,采用了(32+108+32)m中承式钢箱拱。着重对主梁高度、桥面板形式、桥面系结构形式、吊杆间距、拱肋中心距、吊杆形式、边墩负反力及主墩水平推力处理方案等进行优化比选。At the location where the Beijing Bridge on Beijing-Shanghai High-Speed Railway spans Beijing-Kaifeng Expressway, to meet the requirements for grade separation there and to seek for better effect of aesthetics, the type of a half-through steel box arch bridge with spans （32 ＋108＋32） m was adopted in the design, and the handling schemes for various structural parts of the bridge, such as the main girder depth, deck slab types, floor system, suspender spacing, arch rib c/c distance, suspender types, negative reaction forces on the side piers and horizontal thrust form the main piers were mainly compared and optimized.

关 键 词：京沪高速铁路 中承式桥 钢箱拱 组合结构 桥梁设计 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]