低真空管道高速磁浮桥梁管道结构形式研究

Research on Structure Form of High-Speed Maglev Bridge in Low Vacuum Tube

低真空管道高速磁悬浮是一种快捷、安全和舒适的新兴高速交通系统,必将助力我国交通强国建设和交通运输技术的革新。近年来我国有多条低真空管道高速磁悬浮列车试验线项目开建或竣工,为真空管道高速磁悬浮系统走向工程化应用奠定了坚实的基础。鉴于管道结构应具有稳定性高、承载力大、密封性好等诸多特征,在目前国内外对低真空管道高速磁悬浮关键技术研究的基础上,结合低真空管道高速磁悬浮的技术特点,分析和研究低真空管道桥梁管道结构技术方案。提出多种桥梁管道断面形式及结构方案,从结构受力、设备布置、构造连接及施工难度等方面进行优缺点分析,为低真空管道超高速磁悬浮实现工程化应用提供前瞻性建议,对将来低真空管道高速磁悬浮桥梁管道结构的设计具有借鉴意义。

The high-speed maglev in low vacuum tube is a quick,safe and comfortable new high-speed transportation system.It will definitely help the innovation of our transportation construction and transportation technology.In recent years,there have been many test line projects built or completed.It lays a solid foundation for the engineering application of high-speed maglev system in vacuum tube.In view of the pipeline structure should have many characteristics such as high stability,high bearing capacity and good sealing,this paper analyzed and studied the technical scheme of bridge pipeline structure in low vacuum tube based on the current domestic and foreign research on the key technology of high-speed maglev in low vacuum tube,and combined with its technical characteristics.A variety of bridge pipeline section forms and structure plans were put forward,and the advantages and disadvantages were analyzed from the aspects of structural stress,equipment layout,structural connection and construction difficulty,which provided forward-looking suggestions for the engineering application of ultra high-speed maglev of low-vacuum pipelines,and had reference significance for the design of pipeline structure of high-speed maglev bridge in low vacuum tube in the future.