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Fatigue of certain members of bridge caused by repeated application of stress resulting from locomotives and cars crossing bridge is discussed; recorded stresses in railroad bridges conducted since 1940 by Assn of American Railroads have shown that only small percentage of actual stresses are near maximum; there are certain factors which tend to favor bridge in terms of fatigue whereby actual stresses are less than calculated; completion of stress cycle depends on relationship between axle spacing and span length; inspection is necessary at those locations where fatigue cracks might develop. (04519)
Fatigue of certain members of bridge caused by repeated application of stress resulting from locomotives and cars crossing bridge is discussed; recorded stresses in railroad bridges conducted since 1940 by Assn of American Railroads have shown that only small percentage of actual stresses are near maximum; there are certain factors which tend to favor bridge in terms of fatigue whereby actual stresses are less than calculated; completion of stress cycle depends on relationship between axle spacing and span length; inspection is necessary at those locations where fatigue cracks might develop. (04519)
Recorded stress histories in railroad bridges
ASCE, J Struct Div
Drew, F.P. (author)
1968
12 pages
Article (Journal)
English
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