Lin Boliang, Wang Jiaxi, Wang Huasheng, Wang Zhongkai, Li Jian, Lin Ruixi, Xiao Jie, Wu Jianping
School of Traffic and Transportation, Beijing Jiaotong University, Beijing, People's Republic of China.
Locomotive & Car Research Institute, China Academy of Railway Sciences, Beijing, People's Republic of China.
PLoS One. 2017 May 4;12(5):e0176961. doi: 10.1371/journal.pone.0176961. eCollection 2017.
This paper presents a 0-1 programming model aimed at obtaining the optimal inventory policy and transportation mode for maintenance spare parts of high-speed trains. To obtain the model parameters for occasionally-replaced spare parts, a demand estimation method based on the maintenance strategies of China's high-speed railway system is proposed. In addition, we analyse the shortage time using PERT, and then calculate the unit time shortage cost from the viewpoint of train operation revenue. Finally, a real-world case study from Shanghai Depot is conducted to demonstrate our method. Computational results offer an effective and efficient decision support for inventory managers.
本文提出了一个0-1规划模型，旨在为高速列车维修备件获取最优库存策略和运输模式。为了获取偶发更换备件的模型参数，提出了一种基于中国高速铁路系统维修策略的需求估计方法。此外，我们使用PERT分析短缺时间，然后从列车运营收益的角度计算单位时间短缺成本。最后，以上海动车段的实际案例进行研究，以验证我们的方法。计算结果为库存管理者提供了有效且高效的决策支持。
