Design and Testing of High-Load Multi-Rotational Disc Bearings for Bridges

The American Association of Highway and Transportation Officials (AASHTO) LRFD Bridge Design Specifications (BDS) currently contain limited design criteria for disc bearings. The BDS requirements are predominately based on NCHRP Project 10-20A, “High-Load, Multi-Rotational Bearings: Design, Materials, and Construction” initiated in 1986 and published in 1999 as NCHRP Report 432: High-Load Multi-Rotational Bridge Bearings. At the time, only one company manufactured disc bearings and testing samples of their product were limited. Since 1999, multiple companies manufacture disc bearings and industry standards have progressed. Due to the limited research, bridge designers are reliant on disc bearing manufacturers’ unique in-house designs, which introduces uncertainties that may result in nonuniform reliability and performance. Renewed consideration of high-load multi-rotational (HMLR) disc bearings would likely result in a more thorough and robust design approach. Research is needed to update the current practice for the design, fabrication, and construction of disc bearings. The objective of this research is to develop design procedures and acceptance testing methods and criteria for HLMR disc bearings for highway bridges. It shall be applicable to all design limit states.


  • English


  • Status: Proposed
  • Funding: $600000
  • Contract Numbers:

    Project 12-126

  • Sponsor Organizations:

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Abu-Hawash, Ahmad

  • Start Date: 20240226
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01898361
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 12-126
  • Files: TRB, RIP
  • Created Date: Nov 7 2023 12:07PM