Monopile foundation subjected to cyclic lateral loading
Sarah Martin and Professor Byron Byrne
A comprehensive overview of cyclic lateral loading of piles will be presented, along with novel approaches to modelling cyclic loading. Additionally, an introduction to the range of work being carried out through the PICASO project will be provided. A key aspect of the project is the medium-scale field testing, which has yielded new evidence of pile cyclic loading behavior that can be used to test design methods. In 2020, 11 test piles with diameters of 1.22 m and 2.5 m were installed by impact driving at an over-consolidated glacial till site in Cowden, Hull, UK. The site characterization and analysis of the pile installation will be discussed. Furthermore, an overview of the cyclic loading tests completed will be given, including uniform amplitude cycling and pseudo-random cycling to simulate “storm” events. This event is a must-attend for engineers who are interested in keeping up to date with the latest developments in offshore wind turbine foundation design. In this presentation you will learn:
- the site characterisation and analysis of the pile installation
- an overview of the cyclic loading tests completed, including uniform amplitude cycling and pseudo-random cycling to represent “storm” events
- Cyclic lateral loading of monopile foundations with insights to the PICASO project, Cowden Clay.
About the speakers
Sarah Martin Associate Geotechnical Engineer, Offshore Geosciences Team, WSP
Sarah is an Associate Geotechnical Engineer in the WSP Offshore Geosciences Team in Perth. Sarah spent the first six years of her career as a Geotechnical Engineer with Golder Associates (now WSP) in Brisbane, predominantly working in the infrastructure sector. Sarah shifted her focus to offshore geotechnical engineering by pursuing her DPhil at the University of Oxford, commencing in late 2018 and currently awaiting final assessment. She was funded by an Ørsted studentship and was part of the Renewable Energy Marine Structures (REMS) Centre for Doctoral Training (CDT). Sarah’s research had a practical focus, centering on medium-scale field testing for monopile foundations in over-consolidated clay soils. This research is a key component of the Pile Cyclic Analysis: Oxford and Ørsted (PICASO) Project, which seeks to develop improved design methods for cyclic lateral loading, building on the success of the Pile Cyclic Analysis (PISA) project for monotonic lateral loading.
Professor Byron Byrne Ørsted / Royal Academy of Engineering Research Chair in Advanced Geotechnical Design, Oxford University
Professor Byron Byrne holds the Ørsted / Royal Academy of Engineering Research Chair in Advanced Geotechnical Design at Oxford. He is also Professor of Engineering Science in Civil Engineering and a Fellow at St Catherine’s College. He is the Oxford Director for the EPSRC funded Centre for Doctoral Training in Renewable Energy Marine Structures, a Co-Investigator for the EPSRC funded Centre for Doctoral Training in Wind and Marine Energy Systems and Structures and a Co-Director of the EPSRC Supergen Offshore Renewable Energy Hub. He is an Associate of the Geotechnical Consulting Group in London. He is a Fellow of the Royal Academy of Engineering and the Institution of Civil Engineers.
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