浅谈无缝线路轨道的桥梁孔跨布置

无缝线路作为轨道交通的发展方向,需要轨下桥梁结构设计树立以人为本,满足高速列车旅客舒适性、轨道平顺性、安全性要求的设计理念。通过京沪高速铁路南京大胜关长江大桥孔跨布置设计与该桥无缝线路设计方案专题研究,表明在无缝线路轨道下合理的桥梁孔跨布置,能提供无缝线路较好的轨道受力条件。

Preliminary Study of Span Arrangement for Bridges to be Laid with Jointless Tracks

The application of jointless tracks is one of the development trends of rail transit.In the design of the bridges to be laid with the jointless tracks,the concept of the people-oriented needs should be established,that is,the requirements for passenger comfort,track evenness and safety under conditions of high speed running trains should be satisfied in the design of the bridge structures under the tracks.In this paper,through the design of span arrangement for Nanjing Dashengguan Changjiang River Bridge on Beijing-Shanghai High Speed Railway and special study of the design alternatives of the jointless tracks for the Bridge,the results of the design and study indicate that the rational span arrangement for bridges to be laid with the jointless tracks can provide favorable force conditions for the tracks.