Design and Performance of Soil-Pile-Slip Test Apparatus for Tension Piles
Reddy ES, Chapman DN, O'Reilly M
(Received 13 August 1996; accepted 1 December 1997)

Abstract
The T-Z method is the common method available to estimate load-displacement behavior of tension piles. Obtaining accurate T-Z curves from laboratory tests has a vital role in better estimation of pile behavior. The available apparatus used to obtain laboratory T-Z curves (Coyle and Sulaiman 1967) suffers from a set of limitations. A soil-pile-slip test apparatus has been designed at the University of Nottingham (UK) to obtain better T-Z curves for tension piles. This paper presents the design details and the testing procedure of the soil-pile-slip test apparatus. A set of T-Z curves obtained using this apparatus is analyzed, which provides insight into the mechanism of soil-pile-slip dilation near the pile surface.

Keywords:
T-Z curves, T-Z method, design details, interface friction, laboratory testing apparatus, load-displacement, pile foundation, soil-pile-slip, tension piles

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Author Reddy ES, Chapman DN, O'Reilly M Title Design and Performance of Soil-Pile-Slip Test Apparatus for Tension Piles Symposium , Committee on