Comparative Study of Fatigue Strength between Two- and Four- Plate-Girder Bridges

Abstract

Fatigue strength in three types of steel highway bridges including a two-plate-girder bridge and two kinds of four-plate-girder bridges were investigated by means of an equivalent fatigue design load approach . It became clear that the two-plate-girder bridge has the highest fatigue strength. In addition, the effect of transverse distribution of traffic flow on fatigue damage was examined.