Assessment of SPT-based method of pile bearing capacity-analysis of a database

摘要

It is nowadays recognised the in-situ-based methods are the most appropriate to predict pile foundations bearing capacity. In foundation design codes as well as in the literature are prescribed several SPT-based design methods, most of them being empirical. The paper presents a database consisting of 46 axial pile loading tests carried out in 27 sites in the United Arab Emirates with comprehensive geotechnical data. The piles are bored in slightly silty sandy soils. An evaluation of some currently used methods for the calculation of pile bearing capacity in sandy soils on the basis of SPT test was made. Comparison of predicted values to the ones experimentally derived from pile tests has led to rank these approaches with respect to their predictive capability for the bearing capacity of bored piles in sand.