Complexity and optimization of public transit network: Taking Baoji for example(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2018年05期
- Page:
- 146-153
- Research Field:
- 交通工程
- Publishing date:
Info
- Title:
- Complexity and optimization of public transit network: Taking Baoji for example
- Author(s):
- GAO Hongyan; LIU Fei; QIAN Yu
- Keywords:
- traffic engineering; public transit network; static characteristic; optimization; complex network
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to reduce the urban traffic congestion and change the unreasonable situation of urban public transit route planning, the urban public transit system was studied with the method of complex network, and the public transit network was constructed, the important parameters such as the centrality of bus station, the centrality of bus section, the clustering characteristic of bus network, the small world, the group characteristic and the destructiveness were studied, take Baoji public transit network as an example. Public transit network model of Baoji was constructed based on Space L method, the degree and betweenness of nodes were used to measure the importance of the bus stations, the betweenness of edges were used to measure the importance of the bus routes, and the clustering coefficient and the shortest path were used to measure the complexity of the public transit network. The community structure of public transit network was detected by GN algorithm. The robustness of public transit network was verified，when the network was attacked by two strategies such as random attack strategy and burst attack strategy. The results show that Baoji public transit network has the same powerlaw as public transit networks, which can be divided into 11 distinct community structures. The network is robust to random attacks and vulnerable to deliberate attacks based on degree. Compared with large and mediumsized cities in China, the collectivization degree of Baoji public transit network is relatively low. The methods of optimizing Baoji public transit network are proposed, such as dividing the key stations , detouring the key sections, according to the community division and the overall network structure, the road network is optimized, the intelligent bus system is constructed and the urban construction is planned. It can provide theoretical basis for traffic line planning and urban construction in Baoji City. 6 tabs, 7 figs, 25 refs.
Last Update: 2018-10-23