Research Article
May 1976
Analysis of Fatigue of Welded Crane Runway Girders
Publication: Journal of the Structural Division
Volume 102, Issue 5
Abstract
In recent years, mill building owners and constructors world-wide have observed structural distress in welded crane runway girders. The distress is in the form of fatigue cracks in the vicinity of the juncture of the web and top flange. Structural analyses were made using finite element and classical methods in order to rationally explain the observed cracks and to develop new fatigue-resistant details. The results of the analyses confirmed that the local stresses produced by the passage of concentrated wheel loads were sufficient to cause fatigue cracks in the presently used structural details. It was concluded that the fatigue cracks were caused by the local effects of the crane wheel loads and the high stress range that occurs due to lack of proper bearing between the stiffeners and flange when a fitted stiffener is used. Therefore, an improved fatigue resistant detail was developed which consists of stiffeners with a deep cope (10-in., 254-mm) welded to the underside of the top flange with full penetration welds.
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Information
Published In
Journal of the Structural Division
Volume 102 • Issue 5 • May 1976
Pages: 919 - 933
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: May 1976
Published online: Feb 1, 2021
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Authors
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David A. Demo, AM.ASCE
Engr., Struct. Analysis and Product Development Engrg., Bethlehem Steel Corp., Bethlehem, Pa.
John W. Fisher, M.ASCE
Prof of Civ. Engrg. and Assoc. Dir., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.