A competition to assess the reliability of pile prediction methods

摘要

An international and open competition was organized by the Authors to test the ability of experienced practising engineers to predict the behaviour of plain driven and jet grout enhanced piles under static and cyclic loading. The paper first reviewsthe background, including prior assessments of design reliability, geotechnical conditions at the dense sand test site, the piles' construction, and testing the methods adopted. The organization of the competition is then described before considering theranges of predictions offered in comparison with the field measurements made. General conclusions are drawn from these observations.