摘要
杭申线老桥采用顶升方案来提高桥梁标高,以满足航道等级提升的需要。以杭申线老桥顶升最复杂联为例,简要介绍顶升支撑设计及施工要点,并重点介绍顶升支撑结构安全分析时所要考虑的荷载工况、关键施工阶段和分析内容,以及根据分析结果所提出的意见与建议,可为实际工程设计提供技术支撑,也可为类似工程提供有价值的设计经验。
The jacking-up method is adopted to elevate the height of the bridge deck of the existing bridge of Hangshen Line in order to meet the need of waterway upgrading.The most complicated span combination unit was selected as an example in this paper,and the brief key points of design and construction for jacking-up supporting frame was introduced,especially focused on the loading conditions which needed to take into account,key construction stages,and analysis scope for structural safety analysis of the supporting frame.The comments and suggestion from analysis results can be technical supports for the design of this project and can aa reference ference for the similar projects.
出处
《上海公路》
2011年第3期29-32,13,共4页
Shanghai Highways
关键词
桥梁顶升
顶升支撑
万能构件
结构安全性
bridge jacking-up
jacking-up frame
multi-purpose members
structural safety
