2024 Volume 80 Issue 13 Article ID: 23-13125
In the case of ground deformation caused by reverse fault at the Warren truss bridge service location, it was assumed that the parapet will slide and continue to slide even after impacting the lower chord member. FEM analyses conducted under the condition that the forced displacement through the parapet simultaneously acts on both lower chord members has shown that even a small forced displacement on the order of several centimeters can cause significant damage.In this study, elasto-plastic static and seismic response analyses were conducted under the condition that the forced displacement acts on only one of the lower members, which is on the safer side, and it was also examined whether the difference in the number of diameters affects the various responses. It was shown that when forced displacement acts on only one of the lower chords, more severe damage can occur even when the amount of forced displacement is about 1/4 compared to when forced displacement acts on both chords. There was no significant difference in damage behavior depending on the number of spans.
