摘要
宣城市凤凰桥上部结构采用双提篮梁拱组合结构。主梁采用单箱7室预应力混凝土箱梁,箱梁采用纵、横向双向预应力体系,箱梁宽35 m,两侧设混凝土挑梁,横断面宽度为50 m;拱肋为正拱圈和斜拱圈通过横撑共同组成的钢管混凝土结构。下部结构采用重力式桥台,群桩基础。结构计算分析表明该桥拱肋、吊杆、横撑、箱梁等主要构件受力及桥梁刚度、整体稳定性均满足规范要求。大桥采用先梁后拱的方法进行施工。
The superstructure of the Phoenix Bridge in Xuancheng City is designed as a hybrid structure of girder and double basket handle arches.The main girder of the bridge is the 7-cell single box prestressed concrete girder used with longitudinal and transverse two-way prestressing systems.The girder proper is 35 m in width,has concrete cantilever beams arranged at its either side and the cross section of the girder is therefore totally 50 m in width.The arch ribs of the bridge are the concrete-filled steel tube ...
出处
《世界桥梁》
北大核心
2010年第3期9-11,31,共4页
World Bridges
关键词
钢管混凝土结构
提篮拱
箱形梁
桥梁设计
concrete-filled steel tube structure
basket handle arch
box girder
bridge design
