Seismic resilience assessment of the Western Macedonia highway network in Greece

A. Sextos, I. Kilanitis, Andreas J. Kappos, M. Pitsiava, G. Sergiadis, V. Margaris, N. Theodoulidis, G. Mylonakis, P. Panetsos, K. Kyriakou

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

Retis-Risk is a comprehensive framework recently developed for the assessment and management of the seismic resilience of interurban roadway networks. In this paper, this framework is applied for the road network of the prefecture of Western Macedonia in Greece. Refined data concerning real traffic conditions and network topology were collected and a detailed network mapping was performed in GIS. Utilizing an ad-hoc developed software for implementing the holistic methodology, the as-built road network was assessed and the network components with the highest vulnerability and consequence were identified. To improve the loss assessment reliability, bridge-specific fragility curves were employed based on the refined FE modeling. Structural and traffic cost due to earthquake scenarios of different return period were then predicted. To identify effective loss mitigation measures, the whole process was repeated assuming two different pre-earthquake risk management strategies. The first one concerns a retrofit program tailored to selected (i.e., the most critical) network components, while the second one focuses on the beneficial effect of a better recovery planning. Results indicate the significant contribution of an effective risk management to the loss mitigation and network resilience improvement. Moreover, a sustainable health monitoring system was installed on Polymylos bridge to ensure satellite data transmission during an earthquake event to update the post-earthquake recovery model, nearly in real time, with the measured spectral acceleration of the superstructure. The results indicate that the road network is adequately resilient, primarily due to its newly constructed infrastructure and its compliance to modern seismic standards. However, it consists an interesting application case demonstrating the applicability of the methodology and the major potential benefits of a holistic resilience-based management for the case similar intercity highway networks.

Original languageEnglish
Title of host publicationCOMPDYN 2017 - Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
PublisherNational Technical University of Athens
Pages1828-1842
Number of pages15
Volume1
ISBN (Electronic)9786188284418
DOIs
Publication statusPublished - 1 Jan 2017
Event6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering - Rodos Palace's Convention Center, Rhodes Island, Greece
Duration: 15 Jun 201717 Jun 2017
Conference number: 6
https://2017.compdyn.org/

Conference

Conference6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
Abbreviated titleCOMPDYN 2017
CountryGreece
CityRhodes Island
Period15/06/1717/06/17
OtherCOMPDYN 2017 is one of the Thematic Conferences of the European Community on Computational Methods in Applied Sciences (ECCOMAS) and a Special Interest Conference of the International Association for Computational Mechanics (IACM). It has also been promoted by the European Committee on Computational Solids and Structural Mechanics (ECCSM) of ECCOMAS.
Internet address

Keywords

  • Network resilience
  • Risk management
  • Road networks
  • Seismic retrofit

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