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Bearing capacity of CHD piles compared to traditional piling techniques in sand

Bearing capacity of CHD piles compared to traditional piling techniques in sand

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Original languageEnglish
TitlePhysical Modelling in Geotechnics
Subtitleproceedings of the 7th International Conference on Physical Modelling in Geotechnics (ICPMG 2010)
EditorsLinda Seward
Place of publicationLondon
PublisherCRC Press
Publication date2010
Pages781-786
Number of pages6
Volume2
ISBN (Electronic)978-1-4665-5742-0
ISBN (Print)978-0-415-59288-8
DOIs
StatePublished

Conference

Conference7th International Conference on Physical Modelling in Geotechnics
CountrySwitzerland
CityZurich
Period28/06/101/07/10
Internet addresshttp://www.icpmg2010.ch/finalprogramme

Abstract

The paper introduces a piling system known as the Continuous Helical Displacement (CHD) pile. The pile has a number of advantages over current piling methods during installation, particularly when installed on brownfield sites. The method has been developed to achieve greater performance when installed in coarse grained soils when compared to conventional piling methods. In order to determine the origins of the improved performance, research is being carried out at the University of Dundee on the CHD piling technique. Model testing was used to compare the performance of simulated CHD, driven and auger bored piles. This work showed that the CHD has enhanced performance compared to bored piles and is more comparable to driven pile behaviour. The bearing capacity Nq factors were investigated and found to increase as the soil density decreases. This behaviour suggests the CHD pile improves the soil performance when installed in loose material

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