主跨220m预应力混凝土刚构—连续组合梁桥设计研究  

Design Case Study of Prestressed Concrete Hybird Bridge of Rigid Frame-Continuous Girders with 220-m Main Span

作　　者：胡明[1] 宋韬彬[1] 吴文华[1] 

机构地区：[1]铁道第一勘察设计院桥隧处,甘肃兰州730000

出　　处：《桥梁建设》2003年第2期38-40,共3页Bridge Construction

摘　　要：介绍了主跨220m预应力混凝土刚构—连续组合梁桥超长钻孔桩基础、双薄壁墩间距及壁厚、箱梁合龙顺序及主跨合龙前跨中预施水平顶力等设计研究结果,对在第四系海陆交互相沉积层地质条件下设计大跨径预应力混凝土连续结构梁桥具有参考价值。This paper presents the findings of design case study of the particularly deep bored pile foundations, spacing and wall thickness of the doublethinwalled piers, closure sequence of box girder, and preapplied horizontal jacking force at midspan prior to the closure of main span of a prestressed concrete hybrid bridge of rigid framecontinuous girders with main span length 200 m, which offers reference to the design of longspan prestressed concrete continuous bridges under geological conditions of quaternary sediment of sealand crisscross facies.

关 键 词：桥梁设计 预应力混凝土刚构-连续组合梁桥 技术标准 地质条件 超长钻孔灌注桩 

分 类 号：U448.35[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]