Seismic Response of Skewed Integral Abutment Bridges under Near-Fault Ground Motions, Including Soil–Structure Interaction

Studies on the seismic response of skewed integral abutment bridges have mainly focused under far-field non-pulse-type ground motions, yet large amplitude and long-period velocity pulses in near-fault motions might significant impacts bridge response. In this study, nonlinear dynamic an (SIAB) pulse far-fault non-pulse type are analyzed considering soil–structure interaction, along with parametric studies skew angle compactness backfill. For analyses, three sets motion records selected based site conditions, corresponding artificial fitted by their acceleration spectra. The results show that generally more destructive than SIABs, but presence backfill will mitigate effects to some extent. Coupling longitudinal transverse displacements as well rotation deck would increase angle, so do internal forces steel H piles. influence be most obvious when is densely compacted.