摘要
Abstract
Considering the actual situation of the route' plane and route' elevation, the fully composite bridge-deck steel trussed girder with a span of 80 meters was used in Guangzhou-Zhuhai Railway to span above Guangzhou - Qingyuan Expressway and Tiannan Road. This paper describes emphatically the scheme conception, structure research, design parameters, calculation model, calculation conclusions etc. about the composite bridge-deck steel trussed girder. And then the paper analyzes the economic indicators of fully composite bridge-deck steel trussed girder, compared with the traditional steel trussed girder in longitudinal-transverse beam system. The analysis results show that the composite-deck steel trussed girder has the advantages of shallower height, simpler structure (the bottom longitudinal bracing has been canceled) , less steel consumption and better dynamic performance. As a result, by using this kind of girder in this bridge location, the issues on bridge clearance of road traffic under the bridge can be solved effectively without raising the route's elevation, and the cost of the whole bridge project can be reduced. Furthermore, this bridge will make positive influence on the popularization and application of shallow steel trussed girder with fully composite bridge-deck after it is as-built.关键词
铁路桥/钢桁梁/结合桥面/设计Key words
railwav bridge: steel trussed girder: composite bridge deck: design分类
交通工程
