铁道标准设计Issue(4)：46-50,5.
京新上地桥主梁钢-混过渡段的设计分析
Design Analysis on Steel-Concrete Transition Section of Main Girder of Shangdi Bridge on Beijing-Xinjiang Expressway
摘要
Abstract
Single-point incremental launching method is employed to construct the curved concrete main girder of Shangdi Bridge on Beijing - Xinjiang Expressway. During the incremental launching construction, the total launching weight, distance and maximum cantilever length is respectively 25 000 t, 213 m and 63 m. In order to transfer bending moment and shear force, the steel launching nose is pre-embedded in the front end of the concrete main girder, and is integrally connected with the concrete box girder by shear connectors. For the steel-concrete transition section; mechanical performance of connectors at the top, bottom and web slabs are analyzed firstly; and then, local stress at key positions under the most unfavorable conditions are precisely analyzed by means of solid model. The analysis results show that: connection of the interface is reliable, deformation of the steel-concrete transition section is compatible, and stress distribution is uniform, which indicate that the design is reasonable.关键词
公路桥/顶推/钢导梁/钢-混凝土过渡段/局部应力/设计分析Key words
expressway bridge/ incremental launching/ steel launching nose/ steel-concrete transition section/ local stress/ design analysis分类
交通工程引用本文复制引用
徐升桥,刘永锋..京新上地桥主梁钢-混过渡段的设计分析[J].铁道标准设计,2013,(4):46-50,5.基金项目
住房和城乡建设部2010年科技开发计划项目(2010-K2-16) （2010-K2-16）
