Nonlinear Dynamic Analysis of Soil-steel Pipe Pile Sheet-structure Interaction under Seismic Excitation

In this study, the effect of soil-pipe pile sheet-structure interaction was investigated on a steel pipe pile sheet supported bridge pier. Nonlinear dynamic analysis method was used to study the effect of interaction and the oscillation behaviours of the structure. The ground motion specified in current design specification was used. In order to investigate the influence of the 2011 Off the Pacific Coast of Tohoku Earthquake on the seismic performance, the ground motion from this Earthquake was considered as well. Furthermore, static nonlinear analysis (Push-over) was conducted to verify the effect of the interaction. As a result, the soil-structure-interaction affects the oscillation behaviour and seismic performance of the structure. The influence on the seismic performance of the input wave used in this study from the 2011 Off the Pacific Coast of Tohoku Earthquake is limited.