Ground characterisation for PISA pile testing and analysis

Journal article (2020)

Authors

L. Zdravković Imperial College London
R. J. Jardine Imperial College London
D. M G Taborda Imperial College London
David Abadias Imperial College London
H. J. Burd University of Oxford
B. W. Byrne University of Oxford
G. T. Houlsby University of Oxford
David John Paul Igoe Trinity College Dublin
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Copyright: © 2020 Lidija Zdravkovic, Richard J. Jardine, David M.G. Taborda, David Abadias, Harvey J. Burd, Byron W. Byrne, Kenneth Gavin, Guy T. Houlsby, David J.P. Igoe, More Authors
DOI: https://doi.org/10.1680/jgeot.18.PISA.001
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Published Date

2020

Language

English

Abstract

This paper is the first of a set of linked publications on the PISA Joint Industry Research Project, which was concerned with the development of improved design methods for monopile foundations in offshore wind applications. PISA involved large-scale pile tests in overconsolidated glacial till at Cowden, north-east England, and in dense, normally consolidated marine sand at Dunkirk, northern France. The paper presents the characterisation of the two sites, which was crucial to the design of the field experiments and advanced numerical modelling of the pile-soil interactions. The studies described, which had to be completed at an early stage of the PISA project, added new laboratory and field campaigns to historic investigations at both sites. They enabled an accurate description of soil behaviour from small strains to ultimate states to be derived, allowing analyses to be undertaken that captured both the serviceability and limit state behaviour of the test monopiles.