Metro Station Facility Layout Optimization Model Based on the Level of Service Reliability

Facility layout in metro stations is closely related to the facility utilization, level of service (LOS), and even the pedestrian safety. Aiming at this problem, the concept of reliability is incorporated, and followed by the definition of LOS reliability of single facility, single streamline, and whole station. Among these, pedestrian flow arrival characteristic and facility heterogeneity are considered. Then a facility layout optimization model based on the LOS reliability is proposed, and the decision tree cycle algorithm combining simulation is used to solve the problem. Finally, a case study of Zhichunlu Station in Beijing metro is presented to validate the effectiveness of the proposed model. Compared with reality, the optimization scheme can improve the performance of the station significantly including its operation efficiency and security.