FATIGUE STRENGTH OF ROLLED AND WELDED STEEL BEAMS

FATIGUE TESTS WERE CONDUCTED ON ROLLED AND WELDED STEEL BEAMS TO PROVIDE INFORMATION FOR DEVELOPING DESIGN SPECIFICATIONS. THE PRINCIPAL VARIABLES WERE GRADE OF STEEL, TYPE OF BEAM AND DETAIL, AND STRESS VARIABLES. THREE GRADES OF STEEL WERE USED: ASTM A36, A441 AND A514. TWO OF THE FOUR BASIC BEAM TYPES INVESTIGATED ARE EXAMINED HEREIN, NAMELY PLAIN-ROLLED AND PLAIN-WELDED BEAMS. IT WAS FOUND THAT: (1) STRESS RANGE WAS THE DOMINANT STRESS VARIABLE FOR ALL ROLLED AND WELDED BEAMS; (2) FATIGUE LIFE WAS NOT SIGNIFICANTLY INFLUENCED BY GRADE OF STEEL; (3) ROLLED BEAMS PROVIDED THE LONGEST LIFE AND THE MOST SCATTER OF THE DATA; AND (4) PLAIN-WELDED BEAMS WITHOUT ATTACHMENTS CONSTITUTE AN UPPER BOUND FOR WELDED BEAMS. THE TREATMENT OF PLAIN-WELDED BEAMS THE SAME AS BASE METAL OR ROLLED BEAMS GROSSLY OVERESTIMATES THEIR FATIGUE LIFE. /ASCE/

• Supplemental Notes:
  • Vol 97, No ST7, PROC PAPER NO 8238, PP 1897-1911, 12 FIG, 11
• Authors:
  • HIRT, M A
  • Yen, B T
  • Fisher, J W
• Publication Date: 1971-7

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Beams; Design; Fatigue (Mechanics); Fatigue tests; Slopes; Specifications; Steel; Stresses; Weldments
• Uncontrolled Terms: Fatigue life; Grades
• Old TRIS Terms: Rolled beam; Welded beams
• Subject Areas: Bridges and other structures; Design; Highways;

Filing Info

• Accession Number: 00209497
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 23 1971 12:00AM