新菏线增建二线长东黄河大桥总体设计

Overall Design of Changyuan-Dongming Huanghe River Bridge on Newly-built Second Xinxiang-Heze Railway Line

新菏线增建二线长东黄河大桥是并行于 1985年建成的新菏线长东黄河大桥的又一座黄河铁路大桥 ,由东、西引桥和正桥组成 ,全长 12 748.5 m。经桥位比选的结果 ,采用了并行于既有桥和利用桥上黄河桥会让站站线作为二线桥梁一部分的桥位方案。修建在邻近既有桥 3 0 .0 m至 6.0 m线间距处。介绍了桥位比选、设计中的几个技术问题和总体设计。特别是邻近既有桥的基础设计 。

Changyuan\|Dongming Huanghe River Bridge on the newly\|built Second Xinxiang\|Heze Railway Line is a bridge built in parallel to the Changyuan\|Dongming Huanghe River Bridge on Xinxiang\|Heze Railway Line built in 1985.The new bridge is composed of east and west approach spans and main span that totals 12 748.5 m in length.Through comparison of bridge site alternatives,the site finally chosen for the bridge is parallel to the existing old bridge and the refugee station line on the old bridge is used as part of the new bridge.The new bridge is built 30.0 m to 6.0 m nearby the existing railway line.In this paper,bridge site selection,several technical problems involved in the design and overall design of the bridge are introduced.The design of the bridge,particularly the design close to the foundations of an existing bridge,can be the reference to the similar design.