Abstract

Fatigue damage caused by repetitive loading of heavy traffic, especially overloaded vehicles, has been reported in welded areas subjected to secondary or distortion-induced stress. We have been studying the design method of bridges in order to eliminate the existing fatigue problems. This article provides a brief introduction to the current state of fatigue of steel highway bridges in Japan and describes better design strategies to prevent further fatigue damage, based on actual field stress measurements of bridges in Japan.

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