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Abstract
The radical change in the parameters governing fatigue calculations in the latest standards on the subject are first described, illustrating at the same time the concepts of ‘stress range’, ‘load spectrum’ and ‘fatigue damage’ according to Miner.
The methods devised for the application of these concepts are then illustrated, when the stress spectrum and the Wöhler lines of the structural components are known.
Application of these methods in practice for the fatigue calculation of steel bridges for roads and railways is then described.