Statistical determination of significant curved I-girder bridge seismic response parameters

Curved steel bridges are commonly used at interchanges and more of these structures are being designed and built in the United States. Though the use of these bridges continues to increase in locations that experience high seismicity, the effects of curvature and other parameters on seismic behaviors have been neglected in current risk assessment tools. These tools can evaluate the seismic vulnerability of a transportation network using fragility curves. One critical component of fragility curve development for curved steel bridges is the completion of sensitivity analyses that help identify influential parameters related to their seismic response. In this study, an accessible inventory of existing curved steel girder bridges located primarily in the Mid-Atlantic United States (MAUS) was used to establish statistical characteristics used as inputs for a seismic sensitivity study. Critical seismic response quantities were captured using 3D nonlinear finite element models. Influential parameters from these quantities were identified using statistical tools that incorporate experimental Plackett-Burman Design (PBD), which included Pareto optimal plots and prediction profiler techniques. The findings revealed that the potential variation in the influential parameters included number of spans, radius of curvature, maximum span length, girder spacing, and cross-frame spacing. These parameters showed varying levels of influence on the critical bridge response.

• Record URL:
  https://doi.org/10.1007/s11803-013-0168-y
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/16713664
• Authors:
  • Seo, Junwon
• Publication Date: 2013-6

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 251-260
• Serial:
  • Earthquake Engineering and Engineering Vibration
  • Volume: 12
  • Issue Number: 2
  • Publisher: Springer
  • ISSN: 1671-3664
  • EISSN: 1993-503X
  • Serial URL: http://link.springer.com/journal/11803

Subject/Index Terms

• TRT Terms: Bridge design; Curved bridges; Earthquake resistant design; Girder bridges; Highway bridges; Risk analysis; Steel bridges
• Geographic Terms: Middle Atlantic States
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01495026
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 16 2013 11:33AM