Impact on the Seismic Performance of Steel Pipe Sheet Pile Foundation by the Joint Mechanical Properties

With its strong stiffness, large bearing capacity and trustworthy construction, steel pipe sheet pile structures are widely used as bridge foundations, especially for large scale bridges in cases where the bridge spans a river or a bay where the surface ground is very weak and the water is very deep. A typical bridge pier steel pipe sheet pile foundation is being discussed. The vibration behaviour and seismic performance of the bridge pier and the SPSP foundation were investigated by nonlinear dynamic response analysis by taking into account the effects of the mechanical properties of the joints. As a result, the joint mechanical properties affect the seismic performance of the SPSP structure and the pier that it supports sensitively.