Video Case Study: 3D Dynamics Seismic Design of a Jetty Structure

Video Case Study
  • Case Study
  • September 13, 2018
Software: PLAXIS 3D 2010

Location: Turkey

Company: Witteveen+Bos

The importance of soil structure interaction in seismic design of structures is recognized by the seismic design community, which is strongly moving toward performance-based design principles. Particularly for structures with deep foundations in soft soil conditions, soil-structure interaction is a key factor that has to be considered in design. Jetty structures are, like many other port and offshore structures, at the interface of structural and geotechnical engineering. Traditionally the structural engineering community has relied on pseudo-static response spectrum or linear dynamic modal techniques for seismic design. Accuracy assessment of these techniques has been considering regular multistory buildings with a fixed base. For geotechnical structures (i.e. jetties, quay walls), however, these techniques are less common and their performance is less clear.

 

During his master thesis at TU Delft, executed for Witteveen+Bos, Floris Besseling researched how Plaxis can efficiently be applied as a capability in seismic soil-structure interaction problems. This video illustrates how to perform a coupled dynamic analysis of a jetty-type structure.