A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fatigue of Welded Steel Bridge Members Under Variable-Amplitude Loadings
The report contains the findings from an extensive laboratory investigation of fatigue effects in welded steel beams subjected to variable-amplitude loadings similar to those that occur in actual bridges. Fatigue fractures observed in cover-plated steel-beam bridges, both during the AASHTO Road Test and more recently in similar structures in the field, emphasize the importance of understanding the factors that influence the life expectancy of highway bridges. Variables crucial to fatigue life include materials, structural details, quality of fabrication, and the loading history of the structure. This project was primarily concerned with the last of these factors - loading. The objectives of the study were to acquire fatigue data on welded bridge members under variable-amplitude random-sequence stress spectrums such as occur in actual bridges and to develop an analytical method of predicting variable-amplitude fatigue behavior from constant-amplitude fatigue data. The report is based on the results of an experimental program that included constant- and variable-amplitude fatigue tests of both small specimens and relatively large beams of various steels, with structural details similar to those tested in NCHRP Project 12-7. New fatigue provisions are suggested for incorporation into the AASHTO Standard Specifications for Highway Bridges.
Fatigue of Welded Steel Bridge Members Under Variable-Amplitude Loadings
The report contains the findings from an extensive laboratory investigation of fatigue effects in welded steel beams subjected to variable-amplitude loadings similar to those that occur in actual bridges. Fatigue fractures observed in cover-plated steel-beam bridges, both during the AASHTO Road Test and more recently in similar structures in the field, emphasize the importance of understanding the factors that influence the life expectancy of highway bridges. Variables crucial to fatigue life include materials, structural details, quality of fabrication, and the loading history of the structure. This project was primarily concerned with the last of these factors - loading. The objectives of the study were to acquire fatigue data on welded bridge members under variable-amplitude random-sequence stress spectrums such as occur in actual bridges and to develop an analytical method of predicting variable-amplitude fatigue behavior from constant-amplitude fatigue data. The report is based on the results of an experimental program that included constant- and variable-amplitude fatigue tests of both small specimens and relatively large beams of various steels, with structural details similar to those tested in NCHRP Project 12-7. New fatigue provisions are suggested for incorporation into the AASHTO Standard Specifications for Highway Bridges.
Fatigue of Welded Steel Bridge Members Under Variable-Amplitude Loadings
C. G. Schilling (author) / K. H. Klippstein (author) / J. M. Barsom (author) / G. T. Blake (author)
1978
123 pages
Report
No indication
English
Multiaxial fatigue of welded joints under constant and variable amplitude loadings
| British Library Online Contents | 2001