某工程上跨铁路既有桥拆除重建桥型方案设计
The Bridge Type Scheme Design of Existing Bridge across Railway Demolition and Reconstruction in a Project
罗杨1
作者信息
- 1. 中铁第五勘察设计院集团有限公司,北京 102600
- 折叠
摘要
某上跨汉丹铁路既有桥建于 1989 年 3 月,跨铁路孔为 20 m空心板,两侧桥孔为 20 m钢筋混凝土T梁,现需拆除重建,根据现场地形、地物等现状条件,在保证桥梁铁路不断行和运营安全的条件下,拟定转体T构结构、顶推下承式刚性系梁刚性拱和吊装预应力钢筋混凝土小箱梁三种桥型方案.文章根据已知条件,着重对三种方案的优缺点进行分析,以使上跨铁路桥梁建设既满足功能要求,又安全、经济实用.
Abstract
An existing bridge across Wuhan-Danjiangkou Railway was built in March 1989.The cross-railway hole is 20-meter hollow slab,and the bridge holes on both sides are 20-meter reinforced concrete T-beams.It needs to be demolished and rebuilt.According to the current conditions of the site topography and ground objects,under the conditions of ensuring the continuous operation and operation safety of the bridge and railway,three bridge type schemes are proposed:swivel T-structure,incremental launching through rigid binder and rigid arch,and hoisting prestressed reinforced concrete small box girder.According to the known conditions,this paper focuses on the analysis of the advantages and disadvantages of three schemes,so that the construction of the bridge across railway can not only meet the functional requirements,but also be safe,economical and practical.
关键词
铁路/桥型方案/道路纵断面设计Key words
railway/bridge type scheme/road profile design引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据