I am doing a structural assessment of a steel concrete-composite bridge that has been impacted by an over-sized load. The impact has resulted in some significant plastic deformations of the steel beams. FE analysis has shown that this does not greatly affect the moment capacity of the bridge because the damage is at midspan of a continuous beam.
I would quite like to do a fatigue assessment of the damaged bridge however. Can anyone recommend the best way of doing this? I know the procedure is to establish a fatigue classification but that is based on welds or cracks only - can they be comparable to a girder than has been plastically deformed? I am using BS 5400-10 so any specific reference to that would be helpful.
I would quite like to do a fatigue assessment of the damaged bridge however. Can anyone recommend the best way of doing this? I know the procedure is to establish a fatigue classification but that is based on welds or cracks only - can they be comparable to a girder than has been plastically deformed? I am using BS 5400-10 so any specific reference to that would be helpful.