Event archive

Event Organiser: ICE

Offshore wind turbines in seismic regions, webinar

  • Webinar
  • Online
  • 15 July 2021
  • 17:30 - 18:45
Offshore wind turbines in seismic regions, webinar

About this event

The offshore wind industry is forecasted to become a trillion-dollar sector in the next few decades. Significant investments are expected from Asian and American markets. Seismic actions may be a dominant design factor for those regions.

This talk will go through a number of technical myths and fallacies around the rising offshore wind industry in seismic countries. It comprises two parts:  a general identification of the issues associated with the seismic design/assessment; and the demonstration of applications on the seismic behaviour of typical monopiles offshore wind turbines. The webinar will focus mainly on monopile offshore wind turbines (OWT). The discussion will cover the importance of factoring in the seismic actions in the design of OWTs.

Soil structure interaction is key for a proper holistic understanding of the problem. Sub-structuring is certainly handy, however, modelling the system as a whole brings several advantages. It will be shown that OWT may not be necessarily relatable to conventional structures. The dynamic behaviour under seismic actions may be tricky and the modelling of simplified mass distribution can lead to misinterpretations and misunderstandings. Some attention will be paid to the earthquake characteristics, such as pulses and vertical components. Finally, low steel prices and interest rates, and better technologies are pushing the market toward larger and more efficient turbines. The presenter will show how the seismic vulnerability and failure modes change with the OWT size.

This event is being hosted by ICE South West’s Bristol City Club via Zoom.


Dr Raffaele De Risi

Lecturer in Civil Engineering, University of Bristol

Dr Raffaele De Risi

Raffaele received the BSc degree in Civil Engineering and the MSc degree in Structural and Geotechnical Engineering at the University of Naples Federico II (Italy) in 2007 and 2009, respectively. In 2013, he earned the PhD degree in Materials Engineering and Structures at the University of Naples Federico II (Italy).

His research interests are broad and multidisciplinary, and cover a wide range of academic fields, including structural reliability, engineering seismology, earthquake engineering, tsunami engineering, and decision-making under uncertainty.

Dr Ahmer Ali

Research Assistant, Department of Civil Engineering, University of Bristol

Dr Ahmer Ali

Ahmer recently completed his PhD degree in Civil Engineering from the University of Bristol. His work has focused on the seismic vulnerability assessment of bottom-fixed offshore wind turbines.

He has four years of industry experience in planning, analysis, and design of cable supported bridges. His research interests include structural dynamics, earthquake engineering, structural reliability, and renewable energy structures.

Event venue

United Kingdom

For more information please contact:

Barbara Sweet

e: [email protected]