Probabilistic Seismic Risk Forecasting of Aging Bridge Networks

Bridges are the most vulnerable elements in transport systems, and they may undergo structural problems due to environmental conditions and natural disasters. Governmental agencies and owning companies must therefore plan maintenance and retrofit interventions rationally, to avoid potential severe network disruptions. With reference to seismic risk, several studies on the risk assessment of bridge networks, and on aging as one of the main factors affecting the seismic vulnerability of existing bridges, have recently also been reported. In these contributions, the seismic fragility of bridges is considered as a time-dependent parameter, whereas seismic hazard and financial exposure are described according to classic stationary assumptions. The present study proposes an innovative, comprehensive and fully time-dependent probabilistic seismic risk framework, to evaluate the expected average annual loss for stocks of deteriorating bridge structures. This framework is illustrated in a case study of 500 bridges and the results are critically discussed.

• Record URL:
  https://doi.org/10.1016/j.engstruct.2017.01.029
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0141029617301360
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier.
• Authors:
  • Zanini, Mariano Angelo
  • Faleschini, Flora
  • Pellegrino, Carlo
• Publication Date: 2017-4-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 219-232
• Serial:
  • Engineering Structures
  • Volume: 136
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0141-0296
  • Serial URL: http://www.sciencedirect.com/science/journal/01410296

Subject/Index Terms

• TRT Terms: Aging (Materials); Bridges; Earthquake resistant design; Preventive maintenance; Retrofitting; Risk assessment; Seismicity
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 01630760
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 28 2017 5:08PM