A Network-Based Importance Measurement Index for Bridge Security Risk Assessment and Prioritisation
In the related literature, conventional approaches to assessing security risk and prioritising bridges have focused on unique characteristics. Although the unique characteristics appropriately reflect the economic and social consequences of failure, they neglect the consequences of a bridge failure at the network level. If network owners and operators prioritise bridges solely based on their unique characteristics, bridges with low object-level importance and high network-level importance have very low chances to get priority. In this paper, a bridge importance measurement index α(e) has been presented, prioritising bridges based on their unique characteristics, location and network topology. To describe how to use this index α(e), three numerical examples were provided. While the first example was related to a simple hypothetical network, the second and third examples were real networks related to the bridges of Wroclaw city. Using these examples, the results of bridge prioritisation obtained in the unique-characteristics-only state were compared to the state in which α(e) had been used. Results showed that considering the location of the bridge and the topological characteristics of the network change the bridges prioritisation. For instance, in the second example, it was observed that the use of the α(e), made bridge Bolesława Krzywoustego the essential bridge, while bridge Grunwaldzki was the essential bridge under the previous prioritisation made by researchers. However, the results of the third example showed that bridge Milenijny, which was considered the essential network bridge as stated in the previous prioritisation made by researchers, was again selected as the most critical bridge based on the α(e).
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/1822427X
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Supplemental Notes:
- © 2022 Mehdi Dezfuli Nezhad et al.
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Authors:
- Nezhad, Mehdi Dezfuli
- Raoufi, Reza
- Dalvand, Ahmad
- Publication Date: 2022
Language
- English
Media Info
- Media Type: Web
- Features: Figures; Maps; References; Tables;
- Pagination: pp 1-30
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Serial:
- Baltic Journal of Road and Bridge Engineering
- Volume: 17
- Issue Number: 1
- Publisher: Riga Technical University
- ISSN: 1822-427X
- EISSN: 1822-4288
- Serial URL: https://bjrbe-journals.rtu.lv/index
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Bridge management systems; Bridges; Disaster resilience; Risk assessment
- Geographic Terms: Wroclaw (Poland)
- Subject Areas: Bridges and other structures; Highways; Security and Emergencies;
Filing Info
- Accession Number: 01843637
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 25 2022 10:07AM