Abstract

In the process of urban rail transit network design, the urban road network, urban trips and land use are the key factors to be considered. At present, the subjective and qualitative methods are usually used in most practices. In this paper, a quantitative model is developed to ensure the matching between the factors and the urban rail transit network. In the model, a basic network, which is used to define the roads that candidate lines will pass through, is firstly constructed based on the locations of large traffic volume and main passenger flow corridors. Two matching indexes are proposed: one indicates the matching degree between the network and the trip demand, which is calculated by the deviation value between two gravity centers of the stations’ importance distribution in network and the traffic zones’ trip intensity; the other one describes the matching degree between the network and the land use, which is calculated by the deviation value between the fractal dimensions of stations’ importance distribution and the traffic zones’ land-use intensity. The model takes the maximum traffic turnover per unit length of network and the minimum average volume of transfer passengers between lines as objectives. To solve the NP-hard problem in which the variables increase exponentially with the increase of network size, a neighborhood search algorithm is developed based on simulated annealing method. A real case study is carried out to show that the model and algorithm are effective.

Highlights

  • As the backbone of an urban transit system, urban rail transit plays an important role in urban development

  • Urban rail transit network design can be affected by many factors, such as urban space, structure and layout, passenger demand, society and economy, environmental impact, and policy, etc., and it is complicated to quantify the factors simultaneously, so subjective and qualitative methods are usually used in most practices of network design

  • We focus on how to consider the characteristics of urban road network, trips and land use in the quantitative network design

Read more

Summary

Introduction

As the backbone of an urban transit system, urban rail transit plays an important role in urban development. The network design, which will determine the structure and the overall layout of the network, is the most important stage in urban rail transit planning. Land use value along the lines and around the stations can be greatly improved with the impact of urban rail transit, which can effectively guide the rapid development of the city [16,17]. In this paper, a quantitative model, which takes into account the urban characteristics simultaneously and is applicable to real cities is developed while the cities were generally regarded as connected graphs in most previous research.

Determination of Matching Indexes
Evaluation Indexes
Notations
Objective Functions
1: Maximize the transport efficiency of the network
Objective
Constraints Constraint 1
Results
Conclusions

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.