FATIGUE STRENGTH OF WELDED STEEL BEAMS
THE ESSENTIAL FINDINGS FROM THE FINAL REPORT ON PHASE 2 OF NCHRP PROJECT 12-7, "EFFECTS OF WELDMENTS ON FATIGUE STRENGTH OF STEEL BEAMS," ARE REPORTED. THE PRINCIAPL DESIGN VARIABLES INCLUDED THREE TYPES OF STEEL, VARIOUS STRESS CONSIDERATIONS, AND VARIOUS DESIGN DETAILS. DURING THE STUDY 69 WELDED BEAMS AND GIRDERS WITH TRANSVERSE STIFFENERS WERE TESTED, PROVIDING DATA ON 118 STIFFENER DETAILS. THE STIFFENERS WERE EITHER WELDED TO THE WEB ALONE OR WERE WELDED TO BOTH THE WEB AND THE FLANGES. FIFTY-SIX WELDED BEAMS WERE TESTED WITH ATTACHMENT PLATES WELDED TO THE TENSION AND COMPRESSION FLANGES. THE VARIABLES IN THE STUDY OF ATTACHMENT FATIGUE LIFE WERE LENGTH OF ATTACHMENT, STRESS, AND TYPE OF WELD DETAIL. THE RESULTS OF PHASE 2 CONTINUE TO CONFIRM THAT STRESS RANGE ALONE IS THE ONLY SIGNIFICANT FACTOR FOR DESIGNING A GIVEN DETAIL AGAINST FATIGUE. MINIMUM STRESS AND TYPE OF STEEL DID NOT SIGNIFICANTLY AFFECT THE FATIGUE STRENGTH OF BEAMS WITH TRANSVERSE STIFFENERS OR ATTACHMENTS.
- Record URL:
-
Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 - Publication Date: 1973-3
Media Info
- Media Type: Digital/other
- Features: Figures; Tables;
- Pagination: 13 p.
-
Serial:
- NCHRP Research Results Digest
- Issue Number: 44
- Publisher: Transportation Research Board
Subject/Index Terms
- TRT Terms: Beams; Fatigue tests; Flanges; Girders; Metal bridges; Steel bridges; Steel structures; Stiffeners (Plates); Transverse stiffeners; Webbing; Welding
- Old TRIS Terms: Stiffeners
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00217314
- Record Type: Publication
- Report/Paper Numbers: Digest
- Files: TRIS, TRB
- Created Date: May 29 1973 12:00AM