拉萨河特大桥主桥结构设计  

Structural Design of Main Bridge of Lhasa River Bridge

作　　者：李凤芹[1] 王祯[1] 

机构地区：[1]铁道第三勘察设计院桥梁处,天津300142

出　　处：《桥梁建设》2005年第5期8-12,共5页Bridge Construction

摘　　要：介绍了拉萨河特大桥主桥结构设计情况,对于五跨梁拱组合桥梁各孔跨合理的跨度比、叠拱的受力行为及连续梁系杆截面形式等设计中的关键性问题进行了深入的研究,给出了主桥连续梁系杆的刚度和应力情况、钢管混凝土拱的应力情况。This paper presents the structural design of the main bridge of Lhasa River Bridge, makes a deep-going study of the key techniques for design of the Bridge, such as the reasonable span length ratio of each span of the 5-span girder and arch hybrid structure, mechanical behaviour of the dual arch ribs, and section of the continuous girder tie beam, and also works out rigidity and stress conditions of the continuous girder tie beam and stress conditions of the concretefilled steel tube arches of the main bridge.

关 键 词：拉萨河特大桥 钢管混凝土拱 连续梁 组合结构 桥梁设计 

分 类 号：U448.215[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]