Time-variant sustainability assessment of seismically vulnerable bridges subjected to multiple hazards

You Dong, Dan M. Frangopol, Duygu Saydam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

142 Citations (Scopus)

Abstract

In the design and assessment of structures, the aspects regarding the future performance are gaining increased attention. A wide range of performance measures is covered by 'sustainability' to reflect these aspects. There is the need for well established methods for quantifying the metrics of sustainability. In this paper, a framework for assessing the time-variant sustainability of bridges associated with multiple hazards considering the effects of structural deterioration is presented. The approach accounts for the effects of flood-induced scour on seismic fragility. Sustainability is quantified in terms of its social, environmental, and economic metrics. These include the expected downtime and number of fatalities, expected energy waste and carbon dioxide emissions, and the expected loss. The proposed approach is illustrated on a reinforced concrete bridge. The effects of corrosion on reinforcement bars and concrete cover spalling are accounted. The seismic fragility curves at different points in time are obtained through nonlinear finite element analyses. The variation of the metrics of sustainability in time is presented. The effects of flood-induced scour on both seismic fragility and metrics are also investigated.
Original languageEnglish
Pages (from-to)1451-1467
Number of pages17
JournalEarthquake Engineering and Structural Dynamics
Volume42
Issue number10
DOIs
Publication statusPublished - 1 Jan 2013
Externally publishedYes

Keywords

  • Bridges
  • Deterioration
  • Loss
  • Multi-hazard
  • Seismic fragility
  • Sustainability

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

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