Life Extension of Fatigue-Damaged Highway, Rail, and Transit Bridges
Fatigue is a common and potentially very damaging occurrence in metallic structures, including steel bridges. There have been numerous studies throughout the last two centuries on fatigue life, but challenges of preventing fatigue crack growth are still unresolved. The most widespread method of repair and retrofitting involves drilling a crack-arrest hole at the tip of a fatigue crack, but crack re-initiation has been noted in many cases of this repair. The purpose of this study was to better understand re-initiation at crack-arrest holes through welds and to develop methods to prevent re-initiation from occurring.
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Supplemental Notes:
- This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
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Corporate Authors:
Lehigh University
ATLSS Engineering Research Center, 117 ATLSS Drive
Bethlehem, PA United States 18015 Pennsylvania State University
University Park, PA United States 16802Office of the Assistant Secretary for Research and Technology
University Transportation Centers Program
Department of Transportation
Washington, DC United States 20590 -
Authors:
- Tracy, Alexandra
- Sause, Richard
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0000-0002-6143-4385
- Hodgson, Ian
- Saunders, Joe
- Publication Date: 2021-5-1
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 89p
Subject/Index Terms
- TRT Terms: Fatigue cracking; Repairing; Service life; Steel bridges; Welds
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation;
Filing Info
- Accession Number: 01785043
- Record Type: Publication
- Report/Paper Numbers: CIAM-UTC-REG 8
- Contract Numbers: 69A3551847103
- Files: UTC, NTL, TRIS, ATRI, USDOT
- Created Date: Oct 20 2021 9:25AM