Validation of Tsunami Design Guidelines for Coastal Bridges

This paper details a Transportation Pooled Fund Study, TPF-5(307), that included Alaska, California, Hawaii, Oregon (lead state), Washington, and the Federal Highway Administration. The research goal was to update guidelines as a foundation for review by the respective AASHTO sub-committee(s). This report focused on bridges for the Western United States. Five major efforts were completed: 1. Updated probabilistic tsunami hazard mapping to include wave-heights, velocities, and inundation levels at the 1000-year recurrence interval. This was completed for all aforementioned states at varying detail (10m through 60m); 2. Uncertainties and bias between models were examined to find areas where they agree and potential areas where the study could identify conservative estimates for optimization. 3. Analysis of site-specific tsunami hazards was developed. Two methods (level 1 and level 2) are presented to detail local tsunami hydrodynamics; 4. Loading are detailed and recommendations for equations presented based on research findings. Three load cases, including conditions showing upward lift were modeled and equated. Bridge skew, slope, and super-elevation were examined. Debris was considered. 5. Geotechnical considerations were also discussed.

• Record URL:
  https://www.oregon.gov/odot/Programs/ResearchDocuments/TsunamiFinal.pdf
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/58429
• Summary URL:
  https://rosap.ntl.bts.gov/view/dot/66679
• Corporate Authors:

  Oregon Department of Transportation

  Research Section
  555 13th Street NE
  Salem, OR  United States  97301

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lynett, Patrick
  • 0000-0002-2856-9405
  • Thio, Hong Kie
  • 0000-0002-9051-9601
  • Scott, Michael
  • 0000-0001-5898-5090
  • Murphy, Tom
  • 0000-0002-1474-9181
  • Shantz, Tom
  • 0000-0002-0534-3024
  • Shen, Jian-Dzwan
  • 0000-0001-6982-7290
• Publication Date: 2021-1

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Maps; Photos; References; Tables;
• Pagination: 133p

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Coastal engineering; Coasts; Dynamic loads; Geotechnical engineering; Hydrodynamics; Tsunamis
• Geographic Terms: Alaska; California; Hawaii; Oregon; Washington (State)
• Subject Areas: Bridges and other structures; Design; Environment; Geotechnology; Highways; Hydraulics and Hydrology; Security and Emergencies;

Filing Info

• Accession Number: 01765679
• Record Type: Publication
• Report/Paper Numbers: FHWA-OR-RD-21-09, TPF 5(307)
• Files: NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: Feb 22 2021 10:22AM