摘要
新建贵阳至广州铁路是我国西南山区第一条高标准快速铁路,桥梁座数多。结合桥隧相间、山高路险、交通不便的环境特点及合理的施工方案,制订了在峡谷或河流处采用大跨度桥梁,在简支箱梁相对集中且不通过隧道地段采用32 m双线整孔预制箱梁,在桥隧相间的山区地段,采用32 m预制简支组合箱梁,隧道间困难地段采用便于现浇施工的小跨度连续刚构、连续梁及T构的设计施工方案。介绍该线的主要桥梁结构形式,重点介绍32 m简支箱梁的设计施工方案选择。
The newly-built Guiyang-Guangzhou Railway is the first high standard fast-speed railway in the southwestern mountainous area in China, on which a great number of bridges have been built. In the light of the construction environmental characteristics that the bridges would alternate with the tunnels on the Railway, the mountains were high, the paths were precipitous and the transportation conditions were bad and also considering that the construction schemes to be adopted should be rational, the design and construction schemes for the bridge structures were formulated, that is, the long span bridges were selected over the canyons and rivers, the 32-m span double-track full-span precast box girders at the places where the simply-supported box girder bridges to be arranged were relatively dense and would not extend to the sections of the tunnel areas, the 32-m span simply-supported composite box girders at the mountainous places where the bridges would alternate with the tunnels and the short span continuous rigid-frame, continuous girder and T-frame bridges that were convenient for cast-in-situ construction at the tough places between the tunnels. In this paper, the principal structural types of the bridges on the Railway are introduced and the selection process of the design and construction schemes for the 32-m span simply-supported box girders is mainly described.
出处
《桥梁建设》
EI
CSCD
北大核心
2009年第2期54-57,共4页
Bridge Construction
关键词
快速铁路
铁路桥梁
简支梁
箱形梁
桥梁设计
fast-speed railway
railway bridge
simply-supported girder
box. girder
bridge design
