西南交通大学学报2025，Vol.60Issue(4)：865-873,9.DOI:10.3969/j.issn.0258-2724.20240447
常导高速磁浮交通道岔的平面曲线线形及参数
Horizontal Curve Alignment and Parameters of Turnout for High-Speed Electromagnetic Suspension Maglev Transit
摘要
Abstract
High-speed electromagnetic suspension(EMS)maglev turnouts are one of the weak links in maglev transit,and the study of their alignment parameters is essential for optimizing turnout design.To explore the impacts of the horizontal curve alignment and parameters on the turnout design,the geometric constraints of the vehicle-track system,the requirements for smooth and comfortable train operation,and the demands of turnout manufacturing and maintenance economy on turnout alignment were comprehensively analyzed.Subsequently,the combinations of turnout curve alignment and the principles for selecting key parameters of high-speed EMS maglev turnouts were explored.Finally,horizontal alignment schemes for turnouts under three passing conditions,low speed,moderate speed,and high speed,were proposed.The results show that the horizontal curve radius of turnouts,constrained by the geometric constraints of the vehicle-track system,should not be less than 350.00 m.Single circular curve turnouts exhibit abrupt lateral acceleration changes and are only suitable for low-speed passing.Clothoid-to-circular curve turnouts require large land occupations and are not recommended.Clothoid-circular-clothoid curve turnouts allow parameter adjustments according to operational requirements and are applicable to diverse scenarios.In clothoid-circular-clothoid curve turnout designs,the turnout zone length,lateral displacement at the ends,and switching angle decrease as the circular curve radius increases.The circular curve radius is subject to an upper limit to satisfy lateral displacement after the turnouts.Both the switching angle and lateral displacement at the ends increase with the increase in the clothoid-to-circular ratio,which is recommended to be selected between 2 and 4.关键词
常导高速磁浮交通/道岔/曲线拟合/几何/优化Key words
high-speed EMS maglev transit/turnout/curve fitting/geometry/optimization分类
交通工程引用本文复制引用
彭也也,宋欣悦,赵春发,冯洋,娄会彬..常导高速磁浮交通道岔的平面曲线线形及参数[J].西南交通大学学报,2025,60(4):865-873,9.基金项目
国家自然科学基金项目(52402454) （52402454）
国家资助博士后研究人员计划(GZB20230612)中铁第四勘察设计院科研课题(2022K015)、高速磁浮运载技术全国重点实验室开放课题(SKLM-SFCF-2023-012)、中央高校基本科研业务费专项资金(2682024CX035)的资助. （GZB20230612）
