Urban rail transit loops are essential in urban rail transit systems and transportation networks.However,precise requirements and reference standards for rail transit loop design have yet to be established.There are c...Urban rail transit loops are essential in urban rail transit systems and transportation networks.However,precise requirements and reference standards for rail transit loop design have yet to be established.There are certain areas for improvement in planning,construction,and operation.In the planning and design of urban rail transit loops,the scale of the city and the relationship between line operations should be considered to ensure that the line conforms to the city’s operating traffic conditions and can effectively cater to peak passenger flow requirements.This article presents strategies for planning,constructing,and operating urban rail transit loops,laying the foundation for the healthy operation of urban rail transit.展开更多
The author advances some basic problems of planning & evaluating for track traffic in the process of putting sustainable development strategy in practice and stresses the study of planning and evaluating method sy...The author advances some basic problems of planning & evaluating for track traffic in the process of putting sustainable development strategy in practice and stresses the study of planning and evaluating method system for track traffic and environment strategy. Summaries and main creative points presented in the thesis are as follows: ①The changes of track traffic planning objects caused by the concept of sustainable development are analyzed; ②The theory & method of track traffic planning optimal decision is set up ; ③Environment impact assessment for track traffic planning is advanced; ⑤ Urban mass transit network planning is studied; ④Planning of intercity rail system——the alignment optimization of dedicated passenger line and high speed railway line is studied ; ⑥ An overall evaluation index system for sustainable development of track traffic planning is established; ⑦ The track traffic building capacity for sustainable development is studied. Further more, the effect of the method and models with empirical studies is verified. The corresponding application software is realized to provide information service and decision making support to track traffic planning for putting theory into practice.展开更多
Under the background of urban rail transit＇s rapid development, urban rail transit station, as the only connection of urban space and rail transit, undertakes the responsibility of traffic organization and passenger ...Under the background of urban rail transit＇s rapid development, urban rail transit station, as the only connection of urban space and rail transit, undertakes the responsibility of traffic organization and passenger volume distribution. Influenced urban realm around station becomes the focus of the optimization of the sustainable urban development. Pedestrian microscopic simulation method establishes the comprehensive dynamic behavior rules in a part of urban space through simulating the behavior law by digital tools, in which the internal demand and motive mechanism of the development and change of urban space fairly well by digital representing and analyzing relevant laws can be explained. After that, the research with the realm as the carrier analyzed the demand of each simulation level and the choice of simulation parameters based on analyzing the walking connection behavior characteristics, and then further established the methodology system of pedestrian microscopic simulation. At last, the research taking the study of influenced urban realm around typical station for sample explored the application method of optimizing of urban space and traffic organization based on AnyLogic platform.展开更多
通过优化地铁时刻表可有效降低地铁牵引能耗。为解决客流波动和车辆延误对实际节能率影响的问题,提出列车牵引和供电系统实时潮流计算分析模型和基于Dueling Deep Q Network(Dueling DQN)深度强化学习算法相结合的运行图节能优化方法,...通过优化地铁时刻表可有效降低地铁牵引能耗。为解决客流波动和车辆延误对实际节能率影响的问题,提出列车牵引和供电系统实时潮流计算分析模型和基于Dueling Deep Q Network(Dueling DQN)深度强化学习算法相结合的运行图节能优化方法,建立基于区间动态客流概率统计的时刻表迭代优化模型,降低动态客流变化对节能率的影响。对预测Q网络和目标Q网络分别选取自适应时刻估计和均方根反向传播方法,提高模型收敛快速性,同时以时刻表优化前、后总运行时间不变、乘客换乘时间和等待时间最小为优化目标,实现节能时刻表无感切换。以苏州轨道交通4号线为例验证方法的有效性,节能对比试验结果表明:在到达换乘站时刻偏差不超过2 s和列车全周转运行时间不变的前提下,列车牵引节能率达5.27%,车公里能耗下降4.99%。展开更多
文摘Urban rail transit loops are essential in urban rail transit systems and transportation networks.However,precise requirements and reference standards for rail transit loop design have yet to be established.There are certain areas for improvement in planning,construction,and operation.In the planning and design of urban rail transit loops,the scale of the city and the relationship between line operations should be considered to ensure that the line conforms to the city’s operating traffic conditions and can effectively cater to peak passenger flow requirements.This article presents strategies for planning,constructing,and operating urban rail transit loops,laying the foundation for the healthy operation of urban rail transit.
文摘The author advances some basic problems of planning & evaluating for track traffic in the process of putting sustainable development strategy in practice and stresses the study of planning and evaluating method system for track traffic and environment strategy. Summaries and main creative points presented in the thesis are as follows: ①The changes of track traffic planning objects caused by the concept of sustainable development are analyzed; ②The theory & method of track traffic planning optimal decision is set up ; ③Environment impact assessment for track traffic planning is advanced; ⑤ Urban mass transit network planning is studied; ④Planning of intercity rail system——the alignment optimization of dedicated passenger line and high speed railway line is studied ; ⑥ An overall evaluation index system for sustainable development of track traffic planning is established; ⑦ The track traffic building capacity for sustainable development is studied. Further more, the effect of the method and models with empirical studies is verified. The corresponding application software is realized to provide information service and decision making support to track traffic planning for putting theory into practice.
文摘Under the background of urban rail transit＇s rapid development, urban rail transit station, as the only connection of urban space and rail transit, undertakes the responsibility of traffic organization and passenger volume distribution. Influenced urban realm around station becomes the focus of the optimization of the sustainable urban development. Pedestrian microscopic simulation method establishes the comprehensive dynamic behavior rules in a part of urban space through simulating the behavior law by digital tools, in which the internal demand and motive mechanism of the development and change of urban space fairly well by digital representing and analyzing relevant laws can be explained. After that, the research with the realm as the carrier analyzed the demand of each simulation level and the choice of simulation parameters based on analyzing the walking connection behavior characteristics, and then further established the methodology system of pedestrian microscopic simulation. At last, the research taking the study of influenced urban realm around typical station for sample explored the application method of optimizing of urban space and traffic organization based on AnyLogic platform.
