Research on the Impact and Strategies of Rail Transit Network Integration in the Context of Metropolitan Area Development:A Case Study of the Wuhan Metropolitan Area

The metropolitan area is one of the key focal points in the construction and development of China’s new urbanization.Urban integration is an emerging trend in metropolitan areas.This paper explores the traffic demand characteristics and economic aspects of rail transit within metropolitan regions and argues that the construction of an integrated urban rail transit network is an effective approach to support their development.Rail transit in metropolitan areas offers both technical and economic advantages,improving the efficiency of time and space resource utilization,fostering economic cooperation,and ultimately contributing to an integrated development model.However,the integration of rail transit networks faces several challenges,including road network planning,technical standards,and operational organization.Using the Wuhan metropolitan area as a case study,this paper analyzes the challenges of rail transit network integration and proposes strategic solutions for development.

Understanding the Resilience of Urban Rail Transit:Concepts,Reviews,and Trends

As the scale of urban rail transit(URT)networks expands,the study of URT resilience is essential for safe and efficient operations.This paper presents a comprehensive review of URT resilience and highlights potential trends and directions for future research.First,URT resilience is defined by three primary abilities:absorption,resistance,and recovery,and four properties:robustness,vulnerability,rapidity,and redundancy.Then,the metrics and assessment approaches for URT resilience were summarized.The metrics are divided into three categories:topology-based,characteristic-based,and performance-based,and the assessment methods are divided into four categories:topological,simulation,optimization,and datadriven.Comparisons of various metrics and assessment approaches revealed that the current research trend in URT resilience is increasingly favoring the integration of traditional methods,such as conventional complex network analysis and operations optimization theory,with new techniques like big data and intelligent computing technology,to accurately assess URT resilience.Finally,five potential trends and directions for future research were identified:analyzing resilience based on multisource data,optimizing train diagram in multiple scenarios,accurate response to passenger demand through new technologies,coupling and optimizing passenger and traffic flows,and optimal line design.

Construction Method of Rail Transit Oriented Metropolitan Area under the Integration of Four Networks

In the process of metropolitan area integration,the current rail transit development is not enough to support the rapid expansion of the economy and population of the metropolitan area.It is necessary to attach importance to the important role of rail transit as a support system,promote the integrated development of the metropolitan area,and create a metropolitan area on the track.Through the problems in rail transit development,the development concept of “four networks integration” of rail transit is put forward.From multiple aspects of planning,construction and operation,reasonable promotion strategies are proposed,which could provide feasible suggestions for promoting the construction of metropolitan area on the track.

Design Strategy of Underground Space of Urban Rail Transit Complex Based on Integration Concept

With the accelerated development and utilization of urban underground space,the underground space design of complex based on rail transit has attracted much attention.By sorting out the integration concept and constructing the logical framework of integrated design,the integrated design strategy is proposed from the aspects of function,transportation,space and environment on the urban scale,and the evaluation points of integrated design effect are put forward from the aspects of accessibility,coordination,openness and symbolism.

The Research of Urban Rail Transit Sectional Passenger Flow Prediction Method

This paper studies the short-term prediction methods of sectional passenger flow, and selects BP neural network combined with the characteristics of sectional passenger flow itself. With a case study, we design three different schemes. We use Matlab to realize the prediction of the sectional passenger flow of the Beijing subway Line 2 and make comparative analysis. The empirical research shows that combining data characteristics of sectional passenger flow with the BP neural network have good prediction accuracy.

A simulation model for estimating train and passenger delays in large-scale rail transit networks

A simulation model was proposed to investigate the relationship between train delays and passenger delays and to predict the dynamic passenger distribution in a large-scale rail transit network. It was assumed that the time varying original-destination demand and passenger path choice probability were given. Passengers were assumed not to change their destinations and travel paths after delay occurs. CapaciW constraints of train and queue rules of alighting and boarding were taken into account. By using the time-driven simulation, the states of passengers, trains and other facilities in the network were updated every time step. The proposed methodology was also tested in a real network, for demonstration. The results reveal that short train delay does not necessarily result in passenger delays, while, on the contrary, some passengers may get benefits from the short delay. However, large initial train delay may result in not only knock-on train and passenger delays along the same line, but also the passenger delays across the entire rail transit network.

SOME MEASURES OF INCREASING RAIL TRANSIT RIDERSHIPS: CASE STUDIES

This paper is mainly concerned with how to increase rail transit ridership and how to coordinate with multimodity to optimize the entire public transportation systems. Three case cities, Montreal, Toronto and San Francisco, with metro systems are reviewed in different aspects, including urban planning, transport policy, flexible fare system, safety and security measure, special service, new technical application to improve the quality and value of its service for increasing revenues and profit, comtributing to the long term development of public transit. Some conclusions can be drawn: 1) urban planning should be closely connected with urban transport planning; 2) the role of government is predominant to implement railtransit; 3) the facilifies of railtransit should be advanced, reliable and safe; 4) quality service should be match with rail facilities; 5) special service for the disabled, yound and senior should be advocated.

Importance Analysis of Urban Rail Transit Network Station Based on Passenger

Current urban rail transit has become a major mode of transportation, and passenger is an important factor of urban rail transport, so this article is based on passenger and the degree of the road network structure, calculating the point intensity of stations of urban rail transit, and then reaching a station importance by integrating many point intensities in a survey cycle time, and getting the station importance of urban rail transit network through concrete examples.

Integrated Layout and Transfer of Urban Rail Transit Hubs

This paper is engaged in the research of urban rail transit hub integration and transfer.Firstly,this paper focuses on the space division,the aggregation form of hub subsystems,the spatial layout of hub subsystems,and the design of integrated functions to achieve an integrated layout.In addition,this study also conducted a selection of transfer classification and transfer station layout of urban rail transit hubs,with the aims to promote the improvement of the functions of urban rail transit hubs,the rationality of transfers,and to improve the service quality of the hub system which meet the demand of the public travel.

Rational scale of urban rail transit network based on system dynamics

Urban rail transit(URT) has been playing an important role in urban sustainable development with its advantages of high speed,large capacity,high efficiency and low pollution.Estimating URT network scale is the key to ensure the scientificity and feasibility of its construction.The existing studies on rational scale of URT network have not dealt with the interaction of supply and demand.This paper describes the establishment of a system dynamics model of rational URT network scale determination,considering the interaction between URT construction and city social economic development as well as the dynamic equilibrium of capital supply and traffic demand,and the verification of the model validity by applying it to the case of Wuhan City's URT construction.

Estimation method for a skip-stop operation strategy for urban rail transit in China

The skip-stop operation strategy （SOS） is rarely applied to Chinese urban rail transit networks because it is a simple scheme and a less universally popular transportation service. However, the SOS has performance advantages, in that the total trip time can be reduced depending on the number of skipped stations, crowds of passengers can be rapidly evacuated at congested stations in peak periods, and the cost to transit companies is reduced. There is a contradiction between reducing the trip time under the SOS and increasing the passengers＇ waiting times under an all-stop scheme. Given this situation, the three objectives of our study were to minimize the waiting and trip times of all passengers and the travel times of trains. A comprehensive estimation model is presented for the SOS. The mechanism through which the trip time for all passengers is affected by the SOS is analyzed in detail. A 0-I integer programming formulation is established for the three objectives, and is solved using a tabu search algorithm. Finally, an example is presented to demonstrate that the estimation method for the SOS is capable of optimizing the timetable and operation schemes for a Chinese urban rail transit network.

Modified stochastic user-equilibrium assignment algorithm for urban rail transit under network operation

Based on the framework of method of successive averages(MSA), a modified stochastic user-equilibrium assignment algorithm was proposed, which can be used to calculate the passenger flow distribution of urban rail transit(URT) under network operation. In order to describe the congestion's impact to passengers' route choices, a generalized cost function with in-vehicle congestion was set up. Building on the k-th shortest path algorithm, a method for generating choice set with time constraint was embedded, considering the characteristics of network operation. A simple but efficient route choice model, which was derived from travel surveys for URT passengers in China, was introduced to perform the stochastic network loading at each iteration in the algorithm. Initial tests on the URT network in Shanghai City show that the methodology, with rational calculation time, promises to compute more precisely the passenger flow distribution of URT under network operation, compared with those practical algorithms used in today's China.

2023年世界城市轨道交通运营统计与分析综述

参考国际上较为通用的统计标准,将城市轨道交通分为地铁、轻轨和有轨电车三大类,对世界城轨交通运营现状进行统计。分析表明:截至2023年底,全球有79个国家和地区的563座城市开通了城市轨道交通系统,总里程超过43400.40 km,其中地铁、轻轨、有轨电车分别占50.07%、10.69%和39.24%;中国(含港澳台)累计有66座城市开通运营轨道交通,运营里程达11900.29 km,其中中国内地运营里程11232.65 km。2022年,全球59个国家的183座城市地铁累计运送乘客586.52亿人次,平均负荷强度0.81万人次/(km·d),其中中国(含港澳台)地铁年客流量为212.51亿人次。我国城市轨道交通持续稳步发展,线网规模和客流规模继续居全球第一。统计国务院52号文件发布后的中国轨道交通的线网规模数据,预测低运量城市轨道交通系统将在中国内地有较好的发展前景,特别是中西部地区,以促进城市绿色、可持续发展。同时,根据疫情前后全球主要国家(地区)和城市的客流数据,预计中国内地客流量将在2024—2025年恢复至疫情前水平。

新工科背景下专业实习体系探索与实践——以轨道交通信号与控制专业为例

为适应新工科对人才培养的新要求,针对轨道交通信号与控制专业的实习体系在实践过程中存在的主要问题,通过深化产教融合、强化虚实结合、细化考评综合,建立纵向“三阶段”逐级递进、横向“双形式”互补的实习新模式,形成“一平台,双引擎,三大素质”的实习教学新理念,构建“一核心,三过程,九指标”的综合能力评价新机制。在实习组织形式、实习资源整合、实习评价方式等方面进行积极探索和大胆实践,对其他工科专业的实习教学体系建立有一定借鉴和参考意义。

轨道交通装备制造业创新组织演进机理研究

本文以中国轨道交通装备制造业为案例,基于“组合赋能-创新组织演进-创新模式升级-创新能力提升-产业技术进步”分析框架,探究制造业创新组织演进及其影响。结果表明:①创新组织演进经历了创新系统、创新生态系统和创新联合体依次递进的3个阶段;②与创新组织演进同步,创新模式实现了从合作创新到协同创新再到融通创新的升级;③伴随着创新组织演进和创新模式升级,技术创新能力发展经历了技术吸收能力、技术改造能力、集成创新能力和数字化创新能力4个阶段,同时制造能力发展经历了从基础制造能力、国产化能力、整机制造能力到智能制造能力的逐级跃升;④产业依托创新系统完成了技术“跟跑”,依托创新生态系统实现了技术“并跑”,依托创新联合体则取得了技术“领跑”;⑤创新组织演进是“有为政府”和“有效市场”组合赋能的结果。轨道交通装备制造业创新组织演进机理研究既能丰富产学研融合创新理论体系,也为其他高端制造业突破关键核心技术国际封锁提供理论启示。

基于数据融合的城市轨道交通大客流预警研究

为了降低因节假日或突发时间导致的客流拥堵,促进客运部门快速应对客流波动,提出了一种基于数据融合的城市轨道交通大客流预警方法。通过对客流参数预测信息进行融合,获得符合实际客流瓶颈点的参数信息,以完成轨道交通大客流预警。提出的方法利用动态贝叶斯网络,实现了历史数据与运输服务信息的融合。以城市假期期间五条线路每日客流量为例,通过对比实验验证了提出方法的有效性与准确性。

跨线条件下城市轨道交通列车交路计划优化方法

跨线运营是城市轨道交通重点发展方向。针对跨线条件下列车交路计划编制问题,通过构造乘客出行时空网络图准确刻画复杂交路下的客流行为,建立以最小化列车走行公里与乘客出行时间成本为目标的混合整数规划模型。模型以列车交路方案、开行比例与频率为决策变量,并针对跨线交路与本线交路的行车冲突,考虑非等间隔发车,确定列车发车时刻。设计基于交路及开行频率搜索与运行间隔协调的定制分解算法。案例结果表明,列车跨线方向与乘客换乘主方向一致时,跨线交路可同时提升企业运营与乘客出行效益。换乘出行导致的断面客流量差异是跨线交路开行方案设置的主要依据。研究结论可为运营企业制定列车交路计划提供依据,有助于提高网络运输效率。

城市轨道交通列车加开计划编制模型研究

本文主要研究城市轨道交通在计划编制阶段由于客流不均衡需要在初始运行图加开列车的问题,在确保列车运行安全降低运营成本的前提下合理地加开列车实现运输能力的灵活配置。将列车运行过程形式化描述为事件-活动网络,构建了分时段多目标优化列车加开计划编制模型,提出了启发式决策规则与禁忌搜索算法相结合的两阶段求解算法。结合地铁运行实际数据,在高峰时段和平峰时段分别构建不同算例场景,验证了模型和算法的可行性和有效性。

空铁综合运输网络互补作用分析

为更好地发挥航空运输和高铁运输的优势,本文研究了空铁综合运输网络的互补作用。首先,以城市为节点,以航线/高铁线路为边,以单日航班频率/高铁班次频率为权值,构建了航空网络、高铁网络和空铁综合运输网络。其次,采用枚举法和遗传算法,基于网络加权效率研究了网络的鲁棒性,并识别出网络关键节点组合。再次,针对随机节点失效和关键节点失效两种情况,分别从鲁棒性、互补强度两个方面研究了高铁网络和航空网络的互补作用。结果显示:空铁综合运输网络的加权效率为0.317,明显高于航空网络0.268和高铁网络0.209,当独立的高铁网络不连通时,空铁综合运输网络仍然连通;当随机节点和关键节点失效时,高铁子网络对航空子网络的互补强度平均值分别为0.072和0.435,航空子网络对高铁子网络的互补强度平均值分别为0.217和0.368,关键节点失效时的互补作用更强。结果表明,空铁综合运输网络结合了航空网络和高铁网络的优势,具备更好的鲁棒性,航空网络和高铁网络能够发挥互补作用,且当关键节点失效时,互补作用更为明显。

基于用地性质与乘客需求特性分析的TOD开发方案优化思路与方法研究

积极推进轨道交通站点与周边土地使用的深度一体化,已经成为城市高质量发展的关键。然而,TOD项目有成功,也有失败。本文通过天津、重庆案例深入分析了TOD项目成败的关键,在此基础上提出了TOD项目潜在客户需求总量与需求结构分析的思路与方法,最后提出了优化评价TOD项目的评价分析指标,期待能为推进TOD深度发展和广泛应用提供参考。