Research Article
Sep 1982
Impact Factors for Fatigue Design
Publication: Journal of the Structural Division
Volume 108, Issue 9
Abstract
Theoretical and experimental information is presented on impact factors for the fatigue design of steel highway bridges. Theoretical studies suggest that the impact factors for individual trucks in actual traffic should generally be less than 0.25, but that much higher factors would occur occasionally due to unusual conditions, such as a bump at a critical location. Measurement of impact factors in actual steel bridges confirms these theoretical conclusions. Impact factors approaching 100 percent have been reported in studies aimed at determining peak impact factors for nonfatigue design. However, impact factors determined for individual trucks in traffic, or for test trucks, are generally much lower. This suggests that the impact factors given by the present American Association of State Highway and Transportation Officials (AASHTO) formula are representative of actual bridge loading and, therefore, are generally appropriate for fatigue design, which should be based on typical, rather than extreme, conditions.
Get full access to this article
View all available purchase options and get full access to this article.
Information & Authors
Information
Published In
Journal of the Structural Division
Volume 108 • Issue 9 • September 1982
Pages: 2034 - 2044
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: Sep 1982
Published online: Feb 1, 2021
Permissions
Request permissions for this article.
Authors
Affiliations
Charles G. Shilling, M.ASCE
Assoc. Research Consultant, U.S. Steel Corp., Research Lab., Monroeville, Pa. 15146
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
View Options
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
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.
Get Access
Access content
Please select your options to get access
Log in/Register
Log in via your institution (Shibboleth)
ASCE Members:
Please log in to see member pricing
Purchase
Save for later Item saved, go to cart Information on ASCE Library Cards
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.