The axial behaviour of piles driven in chalk by Jardine, R, Buckley, R, Liu, T, Andolffson, T, Byrne, B, Kontoe, S, McAdam, R, Schranz, F, Vinck, K

“…This paper describes research into the poorly understood axial behaviour of piles driven in chalk. Comprehensive dynamic and monotonic axial testing on 27, mostly instrumented, piles undertaken for the ALPACA joint industry projects is reported and interpreted covering: diameters between 139 mm and 1·8 m; lengths from 3 to 18 m; different pile material types; tip and groundwater conditions; and ages after driving. …”

Ground characterisation for PISA pile testing and analysis by Zdravković, L, Jardine, R, Taborda, D, Abadias, D, Burd, H, Byrne, B, Gavin, K, Houlsby, G, Igoe, D, Liu, T, Martin, C, McAdam, R, Muir Wood, A, Potts, D, Skov Gretlund, J, Ushev, E

“…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. …”

Rigid pile response to cyclic lateral loading: laboratory tests by Abadie, C, Byrne, B, Houlsby, G

“…The test programme is designed to identify the key mechanisms governing pile response, and is divided into four main parts: (a) investigation of loading rate effects; (b) hysteretic behaviour during unloading and reloading; (c) pile response due to long-term single-amplitude cyclic loading; and (d) multi-amplitude cyclic loads. …”

Response of stiff piles to random two-way lateral loading by Leblanc, C, Byrne, B, Houlsby, G

“…A model for predicting the accumulated rotation of stiff piles under random two-way loading is presented. …”

Monotonic and cyclic lateral loading of piles in low to medium density chalk by McAdam, RA, Buckley, RM, Schranz, F, Byrne, B, Jardine, RJ, Kontoe, S, Liu, TF, Vinck, K, Crispin, JJ

“…Offshore and other structures often rely on driven piles to carry lateral loads. However, there is currently no established design method to cover lateral loading at chalk sites, which are widespread across NW Europe. …”

Response of stiff piles in sand to long-term cyclic lateral loading by Leblanc, C, Houlsby, G, Byrne, B

“…A complete non-dimensional framework for stiff piles in sand is presented, and applied to interpret the test results. …”

Monotonic laterally loaded pile testing in a stiff glacial clay till at Cowden by Byrne, B, McAdam, R, Burd, H, Beuckelaers, W, Gavin, K, Houlsby, G, Igoe, D, Jardine, R, Martin, C, Muir Wood, A, Potts, D, Skov Gretlund, J, Taborda, D, Zdravkovic, L

“…The piles had length-to-diameter ratios (L/D) of between 3 and 10. …”

Application of a numerical-based soil reaction curve method for design of laterally loaded monopiles by He, Y

Subjects:

Experimental investigations of response of suction caissons to transient vertical loading by Byrne, B, Houlsby, G

“…They are unusual in that, in contrast with the development of offshore piling, there is no onshore experience that can be used as the basis for the development of designs. …”

Investigating novel foundations for offshore windpower generation by Byrne, B, Houlsby, G

“…One solution is to use conventional piling. However, at some sites it may prove more economical to use shallow foundations, and, in particular suction installed skirted foundations [1]. …”

New data analysis methods for instrumented medium-scale monopile field tests by Burd, H, Beuckelaers, W, Byrne, B, Gavin, K, Houlsby, G, Igoe, D, Jardine, R, Martin, C, McAdam, R, Muir Wood, A, Potts, D, Skov Gretlund, J, Taborda, D, Zdravkovic, L

“…New procedures are described for the interpretation of pile loading data, and specifically for providing precise interpretation of pile displacements.…”

Cyclic lateral loading of monopile foundations in cohesionless soils by Abadie, C

“…Whilst there are some similarities between wind turbine and oil and gas pile design, there are also a number of key differences. …”

Rate effects for monopile foundations by Wu, K-W

“…<p>Monopile pile foundations are the most commonly used support system for offshore wind turbines in Europe. …”

Modelling lifetime performance of monopile foundations for offshore wind applications by Abadie, C, Beuckelaers, W, Byrne, B, Houlsby, GT, Burd, H, McAdam, R

“…This paper demonstrates how the approach can be applied to the cyclic pile field testing from the PISA project (Byrne et al. 2020a). …”

PISA design model for monopiles for offshore wind turbines: application to a marine sand by Burd, H, Taborda, D, Zdravkovic, L, Abadie, C, Byrne, B, Houlsby, G, Gavin, K, Igoe, D, Jardine, R, Martin, C, McAdam, R, Pedro, A, Potts, D

“…The 1D model is calibrated using data from a set of three-dimensional finite-element analyses, conducted over a calibration space comprising pile geometries, loading configurations and soil relative densities that span typical design values. …”

Drained behaviour of suction caisson foundations on very dense sand by Byrne, B, Houlsby, G

“…Alternatives to piled foundations, such as suction caissons, are becoming increasingly viable options for fixed platforms, particularly in the development of marginal fields. …”

The effect of stress-level on the response of a model monopile to cyclic lateral loading in sand by Richards, I, Bransby, F, Byrne, B, Gaudin, C, Houlsby, G

“…Monopile foundations supporting offshore wind turbines are exposed to cyclic lateral loading which can cause accumulated pile displacement or rotation and evolution of the dynamic response. …”

A method for calibration of the Hyperplastic Accelerated Ratcheting Model (HARM) by Abadie, C, Houlsby, G, Byrne, B

“…The initial motivation for this work is the calibration of models for the design of piles subjected to long-term cyclic lateral loading, and the test results from Abadie et al. (2018, 2015) [1,2] are used for calibration and proofing of the model. …”

A model for nonlinear hysteretic and ratcheting behaviour by Houlsby, G, Abadie, C, Beuckelaers, W, Byrne, B

“…The original motivation was for the application to design of piles under lateral loading, and an example of this application is provided. …”

PISA design methods for offshore wind turbine monopiles by Byrne, B, Burd, H, Zdravkovic, L, Abadie, C, Houlsby, G, Jardine, R, Martin, C, McAdam, R, Andrade, M, Pedro, A, Potts, D, Taborda, D

“…The focus was on large diameter, relatively rigid piles, with low length to diameter (L/D) ratios, embedded in clay soils of different strength characteristics, sand soils of different densities and in layered soils combining clays and sands. …”