Generation-2 Bridge Fragility Relationships - Production Analytical Components

Given the positive feasibility findings in phase-1 (T1775), phase-2 (T1780) will conduct production analyses and optimization needed to produce a comprehensive set of g2F fragility relationships for the most concrete bridge types in California Department of Transportations' (Caltrans') inventory. Using techniques piloted under T1755, suites of non-linear time-history analyses will be performed for ~500 g2F-based representative bridge classes to yield probabilistic seismic demand models (PSDM’s) for a variety of engineering parameters (e.g. column ductility, joint displ., etc.). Adjustment factors for bridge skew and support-height uniformity will also be developed. PSDM’s will be combined with CT-provided capacity models to yield both ‘component’ and ‘system’ level fragility models for up to 4 damage states which can be immediately deployed in ShakeCast v3. All work is periodically reviewed by a panel of CT seismic experts.

Language

• English

Project

• Status: Active
• Sponsor Organizations:

  California Department of Transportation

  Sacramento, CA  United States  95819
• Project Managers:

  Roblee, Cliff

• Performing Organizations:

  Georgia Institute of Technology, Atlanta

  Georgia Tech Research Corporation
  505 10th Street, Suite 213
  Atlanta, GA  United States  30332
• Start Date: 20130801
• Expected Completion Date: 20190630
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Concrete bridges; Ductility; Earthquake resistant design; Feasibility analysis; Optimization; Seismicity
• Identifier Terms: California Department of Transportation
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 01620500
• Record Type: Research project
• Source Agency: California Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Jan 4 2017 10:52AM