京沪高速铁路南京越江工程桥梁方案设计

Bridge Conceptual Design for Nanjing Changjiang River Crossing on Beijing-Shanghai High-Speed Railway

北京至上海的高速铁路在南京市区内跨越长江的工程,计划中有采用沉埋管段施工的隧道方案和跨江铁路桥方案两种。针对高速铁路桥的运行特点和保障桥下通畅等问题,详细介绍了桥梁方案在设计理念上的构思和新主梁结构方案的提出。

As regards the Nanjing Changjiang River Crossing Project on BeijingShanghai HighSpeed Railway that will pass through Nanjing city proper, there are currently two planned alternatives of an immersed tube tunnel in the River and a railway bridge over the River for selection. In the light of the features of operation of the highspeed railway bridge and the concerns for accessible clearance under the bridge, this paper describes in details the design considerations for the bridge conceptual design, and the proposed new type of the bridge main girder structures.