Title

Axial Resistance of CFA Piles in Dublin Boulder Clay

Authors

Kenneth Gavin, School of Civil, Structural and Environmental Engineering, University College Dublin, Dublin, Ireland
David Cadogan, Department of Civil, Structural and Environmental Engineering, Cork Institute of Technology, Cork, IrelandFollow
Lloyd Twomey, Associate, Geotechnical Group, Arup Consulting Engineers, Dublin, Ireland

Document Type

Article

Disciplines

Civil and Environmental Engineering | Geotechnical Engineering

Publication Details

Proceedings of the Institution of Civil Engineers - Geotechnical Engineering

Abstract

This paper describes the results of static compression and tension load tests performed on three-instrumented large-diameter continuous flight auger piles installed in Dublin Boulder Clay. The piles developed very high shaft resistance and, in contrast to piles driven into Boulder Clay that exhibit friction fatigue, the shaft distribution was uniform along the pile shaft. This resulted in the normalised average shear resistance being mobilised by a bored pile exceeding that of a pile driven in similar ground conditions. In contrast, the base resistance of the test piles was significantly lower than that of a pile driven in similar ground conditions.

Recommended Citation

Gavin K., Cadogan D., Twomey L., ‘Axial resistance of CFA piles in Dublin Boulder Clay’, ICE Proceedings – Geotechnical Engineering, 2008, Vol. 161, No. 4, 171-180. Available at: https://doi.org/10.1680/geng.2008.161.4.171