Transverse Seismic Design of Bridges with Longitudinal Keyway Joints

This research proposal studies the behavior of a common bridge system employed in Alaska that utilizes decked bulb-tee girders connected by a diamond shaped longitudinal grouted keyway joint with intermittent steel shear connectors. While the behavior of the joint under gravity loads is well established, the performance under transverse seismic excitation is largely unknown. Through the use of full scale subassembly tests and non-linear modelling, recommendations on (1) connection limit states; (2) improvements to the connection (if needed); and (3) lateral modeling approaches will be proposed.

  • Supplemental Notes:
    • Final Report posted on website-


  • English


  • Status: Active
  • Funding: $221258
  • Sponsor Organizations:

    Federal Highway Administration

    Alaska Division
    709 West 9th Street, Room 851
    Juneau, AK  United States  99802-1648
  • Performing Organizations:

    North Carolina State University, Raleigh

    Department of Civil Engineering, Campus Box 7908
    Raleigh, NC  United States  27695-7908
  • Principal Investigators:

    Kowalsky, Mervyn

  • Start Date: 20170104
  • Expected Completion Date: 20190515
  • Actual Completion Date: 20190524
  • USDOT Program: Transportation, Planning, Research, and Development
  • Subprogram: Research

Subject/Index Terms

Filing Info

  • Accession Number: 01634562
  • Record Type: Research project
  • Source Agency: Alaska Department of Transportation and Public Facilities
  • Files: RiP, STATEDOT
  • Created Date: May 4 2017 3:03PM