Assessing vulnerability envelope of the intercity railway network for the Greater Bay area

Haihua Yang, Anthony Chen, Seungkyu Ryu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

According to the national development strategy of the Greater Bay Area (GBA), the intercity railway network of the Pearl River Delta region will be further developed and will become the backbone of the GBA's transportation system in the next decade. However, similar to other transportation networks, human activities or natural hazards may cause disruptions to the railway network and lead to huge negative socio-economic impacts. Thus, to minimize the disruption risk for the railway network, the assessment of network vulnerability is indispensable. In the relevant studies, the research of vulnerability envelope (i.e., the upper and lower vulnerability bounds) can consider all possible combinations while avoiding the combinatorial complexity of enumerating multi-disruption scenarios, which is more suitable for assessing the railway network vulnerability. Specifically, the vulnerability envelope problem is formulated as a binary integer bi-level program (BLP). The upper-level subprogram maximizes or minimizes the remaining network travel throughput under a given number of disrupted links, which corresponds to the upper and lower vulnerability bounds. The lower-level subprogram checks the connectivity or usability of each origin-destination (O-D) pair under a network disruption scenario. By identifying the best and worst scenarios associated with geographical impact, this study assesses the latest regional railway network plan of GBA and presents some insights for the plan. As a new regional railway network plan is under planning in this year, the results of this study could provide decision-making support for the railway planners and managers.

Original languageEnglish
Title of host publicationTransportation Systems in the Connected Era - Proceedings of the 23rd International Conference of Hong Kong Society for Transportation Studies, HKSTS 2018
EditorsWeihua Gu, Shuaian Wang
PublisherHong Kong Society for Transportation Studies Limited
Pages607-614
Number of pages8
ISBN (Electronic)9789881581471
Publication statusPublished - 1 Jan 2018
Event23rd International Conference of Hong Kong Society for Transportation Studies: Transportation Systems in the Connected Era, HKSTS 2018 - Hong Kong, Hong Kong
Duration: 8 Dec 201810 Dec 2018

Publication series

NameTransportation Systems in the Connected Era - Proceedings of the 23rd International Conference of Hong Kong Society for Transportation Studies, HKSTS 2018

Conference

Conference23rd International Conference of Hong Kong Society for Transportation Studies: Transportation Systems in the Connected Era, HKSTS 2018
Country/TerritoryHong Kong
CityHong Kong
Period8/12/1810/12/18

Keywords

  • Analysis
  • Intercity railway network
  • Modeling
  • Network vulnerability envelope

ASJC Scopus subject areas

  • Transportation

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