In the assessment of fatigue safety of the existing bridge structures, the maximum stress range should first be compared with the fatigue limit for the detail in question. An accurate estimation of the number of stress cycles experienced to date by th...
In the assessment of fatigue safety of the existing bridge structures, the maximum stress range should first be compared with the fatigue limit for the detail in question. An accurate estimation of the number of stress cycles experienced to date by the bridge structures requires knowledge of the traffic volume and history on the bridges. In this study, field stresses of a steel bridge under the actual traffic conditions were measured, and stress range was obtained by using the histogram recorder. The obtained data were analysed by the rainflow method and S-N curve. To establish the number of stress cycles and to convert the fatigue life into a length of time, the traffic volume survey was carried out.