Field investigation of base resistance of pipe piles in clay
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|Title:||Field investigation of base resistance of pipe piles in clay||Authors:||Doherty, Paul
|Permanent link:||http://hdl.handle.net/10197/4074||Date:||1-Feb-2010||Abstract:||This paper presents the results of a series of field tests performed to study the effect of soil plugging during installation on the base resistance developed by an open-ended (pipe) pile in clay. Three instrumented pipe piles were installed in soft clay, and the installation resistance and soil plug development were recorded. The tests revealed that the annular base resistance was equal to the cone penetration test q c resistance and was independent of the soil plug development. In contrast, the soil plug resistance increased from a minimum when the pile was fully coring to a maximum when the pile was fully plugged. A simple expression is proposed that links the plug resistance to the cone penetration test q c value at the specified depth and the incremental filling ratio value developed during installation. This expression is shown to provide reasonable estimates of the plug resistance developed by a large-diameter pipe pile driven into stiff to hard clay in the North Sea. The proposed relationship will be particularly useful for modelling the installation resistance of monopile foundations.||Type of material:||Journal Article||Publisher:||Institution of Civil Engineers||Copyright (published version):||2010, ICE Publishing Ltd||Keywords:||Piles & piling;Field testing & monitoring;Foundations||DOI:||10.1680/geng.2010.163.1.13||Language:||en||Status of Item:||Peer reviewed|
|Appears in Collections:||Civil Engineering Research Collection|
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