基于离站时刻协调的水上巴士换乘优化研究

通过调整各线路水上巴士离开始发站的时刻,以协调各线路到达换乘站的时刻,实现减少旅客换乘等待时间,提高换乘效率。在不改变线路运营时间和发船班次的前提下,建立了以换乘站内所有换乘关系的换乘等待时间最小为目标的换乘优化模型,并运用粒子群算法对模型进行求解。最后,以广州市水上巴士西堤码头为例,根据设计的粒子群算法求解,得出优化后的水上巴士在始发站的离站时刻表。计算结果表明,通过协调线路在换乘站的到站时间,西堤换乘站所有换乘线路等待时间减少了20.43%,优化效果较为明显。研究结果可为水上巴士线路网络化运营及优化提供支持。

Optimization of Transfer Based on the Coordination of Waterbus Departure Time in the starting station

By adjusting the departure time of the waterbuses of each line in the starting station and coordinating the arrival time in the transfer station, an optimized scheme is proposed to reduce the waiting time and increase the efficiency of transfer passengers in the transfer station. Under the assumption of fixed service time and dispatch frequency of waterbuses, a transfer optimization model which minimizes the total transfer waiting time of passengers of all lines in a transfer station is established and particle swarm optimization (PSO) is designed to solve this problem. Finally, an example of Xidi Wharf in Guangzhou city is given to test the model and thus optimized departure timetable is obtained. The result shows that transfer waiting time of Xidi Transfer Station significantly reduces by 20.43%. This study can provide some theoretical reference to the waterbus operation scheme under the water-bus network.