The establishment of overtaking points plays a critical role in facilitating the seamless operation of express and local trains in urban/suburban railways.Drawing from an extensive review of methodologies and factors influencing overtaking point selection in urban/suburban railways,this study proposes a mode for selecting overtaking points in urban/suburban trains with a predetermined number of intermediate stations equipped with overtaking capabilities.The proposed model takes into account the construction conditions of the main line or overtaking line,the quantity of overtaking points,and the time intervals between stations.The primary objective is to minimize the overall travel time for all passengers,and to achieve this,an optimization model is developed for selecting overtaking points in urban/suburban trains.The model is applied to compute the arrival and departure times of trains at each station and to determine the locations of overtaking points.Moreover,a methodology is introduced for analyzing and determining overtaking point locations,involving the calculation of train arrival and departure times,along with the creation of train timetables using the optimization model.To validate the efficacy of the proposed model,the Shanghai Airport Link is utilized as a case study.The model is applied to calculate the dwell times of trains at each station,both in the up and down directions,considering a future scenario comprising the operation of 6 pairs of station-to-station trains,large station-stop trains,and intercity trains during peak hours on the Shanghai Airport Link.The results demonstrate that,in this scenario,only one intermediate station,namely Zhangjiang Station,equipped with overtaking capabilities,is required.In conclusion,this study provides an optimization model and calculation method for selecting overtaking points in urban/suburban railways.The application of this model facilitates the reduction of the number of overtaking points while minimizing the overall travel time for all passengers.
关键词
市域(郊)铁路/快慢车模式/越行点/选择优化模型/停站时间
Key words
urban/suburban railway/fast-slow mode/overtaking point/selective optimization model/dwell time
万方数据