面向超长编组列车的股道有效长度优化研究

Study on Effective Length Optimization of Strand for Extra-Long Formation Trains

针对17编组“复兴号”动车组列车在高速铁路车站停靠时存在的安全风险问题,首先分析了不同车载设备制动曲线的特征。基于京沪高铁采取的股道有效长度控制技术,分析了其存在的优缺点。在此基础上,提出车站股道有效长度优化策略,通过移设出站信号机、增加防护区段等一系列措施解决了既有控制技术存在的问题。接着,计算了列车以不同速度正线或侧线通过车站时的运行时间,发现列车以45 km/h的速度经道岔侧向通过股道时运行时间较原来节省了2.24 s,提高了行车效率。最后,应用到沪渝蓉高铁车站,解决了由于站场改造引起的股道有效长度缩短时17编组“复兴号”动车组安全停靠问题。应用结果表明,该研究具备可推广性,可为其他工程建设提供借鉴经验。

To address the safety risks of 17-unit“Fuxing”trains when stopping at high-speed railroad stations,the characteristics of the braking curves of different on-board equipment are firstly analyzed.Based on the effective length control technology adopted by Beijing-Shanghai high-speed railway,the advantages and disadvantages are analyzed.Based on which the effective length optimization strategy is proposed,and the problems of the existing control technology are solved by a series of measures such as moving the exit signal and increasing the protection section.Then,the running time of trains passing through the station at different speeds on the main line or on the sideline is calculated,and it is found that the running time of trains passing through the stock at a speed of 45 km/h on the side of the turnout is 2.24 s less than the original one,which improved the driving efficiency.Finally,it is applied to the Shanghai-Chongqing-Chengdu high-speed railway station,which solved the problem of safe stopping of 17-unit“Fuxing”trains when the effective length of the stock path is shortened due to station renovation.The application results show that the study is scalable and can provide reference experience for other projects.