Repair of Floorbeam-to-Stringer Connections Affected by Distortion-Induced Fatigue

Distortion-induced fatigue is a serious and costly problem facing the Nation's steel bridge infrastructure. Inexpensive, practical, and effective retrofit techniques are desperately needed for the repair of existing structures. One structural system that has repeatedly shown susceptibility to distortion-induced fatigue is the stringer-floorbeam system of bridge construction, wherein cracking is commonly encountered at the connection between floorbeams and stringers. Little research has been performed aimed at developing inexpensive, practical, and effective retrofit techniques for floorbeam-stringer connections. This project contains a roadmap for accomplishing exactly that. Therefore, the research directly addresses the following US Strategic Goals: (1) Enhancing safety, (2) Improving the state of good repair, and (3) Improving environmental sustainability of the U.S. surface transportation system. The research project includes selection of details for study based upon feedback from regional DOTs. Two physical floorbeam-stringer specimens will be tested in distortion-induced fatigue, and various retrofit techniques developed through complimenting finite element analyses will be evaluated on the physical specimens. From prior experience, it is anticipated that multiple tests will be obtainable from a single specimen. Recommendations will be provided regarding the various retrofits developed.

Language

  • English

Project

  • Status: Active
  • Funding: $72884.00
  • Contract Numbers:

    DTRT12-G-UTC07

  • Sponsor Organizations:

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Performing Organizations:

    University of Kansas, Lawrence

    Transportation Research Institute
    2117 Learned Hall, 1530 W 15th Street
    Lawrence, KS  United States  66045
  • Principal Investigators:

    Williams, R

    Rolfe, Stanley

    Bennett, Caroline

  • Start Date: 20120601
  • Expected Completion Date: 0
  • Actual Completion Date: 20131231
  • Source Data: RiP Project 33529

Subject/Index Terms

Filing Info

  • Accession Number: 01483128
  • Record Type: Research project
  • Source Agency: Mid-America Transportation Center
  • Contract Numbers: DTRT12-G-UTC07
  • Files: UTC, RiP
  • Created Date: Jun 5 2013 1:01AM