A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Application of Cumulative Damage Fatigue Theory to Highway Bridge Fatigue Design
The influence of small stress cycles caused by the dynamic response of a bridge upon the fatigue life of welded components was studied. Various loading waveforms were used to load a cantilever welded tee specimen. The fatigue life was measured and means of transforming the loading waveform to constant amplitude waveform producing the same damage were investigated. The waveforms investigated included actual stress histories measured on an in-service bridge loaded with both a single test vehicle and under normal traffic. The results of the study indicate that the small stress cycles cause considerable fatigue damage and cannot be ignored design and evaluation of steel bridges for fatigue. Based on the results of the experimental study and an evaluation of the stress histories of three bridges, a simple means for estimating the damage done by these small cycles was developed using a fatigue factor. The factor of 1.15 is the best estimate for medium span girder bridges.
Application of Cumulative Damage Fatigue Theory to Highway Bridge Fatigue Design
The influence of small stress cycles caused by the dynamic response of a bridge upon the fatigue life of welded components was studied. Various loading waveforms were used to load a cantilever welded tee specimen. The fatigue life was measured and means of transforming the loading waveform to constant amplitude waveform producing the same damage were investigated. The waveforms investigated included actual stress histories measured on an in-service bridge loaded with both a single test vehicle and under normal traffic. The results of the study indicate that the small stress cycles cause considerable fatigue damage and cannot be ignored design and evaluation of steel bridges for fatigue. Based on the results of the experimental study and an evaluation of the stress histories of three bridges, a simple means for estimating the damage done by these small cycles was developed using a fatigue factor. The factor of 1.15 is the best estimate for medium span girder bridges.
Application of Cumulative Damage Fatigue Theory to Highway Bridge Fatigue Design
K. D. Swenson (author) / K. H. Frank (author)
1984
230 pages
Report
No indication
English
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