Research Article
Aug 1977
Fatigue of Steel Beams by Simulated Bridge Traffic
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 103, Issue 8
Abstract
A review of field measurements on bridges under traffic showed that a family of Rayleigh probability-density curves can represent the frequency of occurrence of stress ranges of different magnitudes in actual bridges. A particular histogram for a bridge can be approximated by a particular curve from the family. Each curve is defined by: (1)The modal stress range, Srm; and (2)a parameter Srd, which is a measure of the width of the probability-density curve. Different combinations of Srm and Srd were included. The variable-amplitude data can be related to the constant-amplitude data by using an effective stress range to represent the variable-amplitude spectrum. The effective stress range is the constant-amplitude stress range that would result in the same fatigue life as the variable-amplitude spectrum, and may be taken as the root-mean-square stress range of the spectrum or calculated from Miner's law.
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Information
Published In
Journal of the Structural Division
Volume 103 • Issue 8 • August 1977
Pages: 1561 - 1575
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Aug 1977
Published online: Feb 1, 2021
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Authors
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Charles G. Schilling, M.ASCE
Section Supervisor — Engrg. Mechanics, U.S. Steel Corp., Research Lab., Monroeville, Pa.
Karl H. Klippstein
Assoc. Research Consultant, U.S. Steel Corp., Research Lab., Monroeville, Pa.
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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.