Aimed at solving the low accuracy problem in high strain dynamic pile testing method for toe bearing tubal pile testing, the authors, based on years of actual testing experience, put forward the essentials for testing and the analyzing and interpreting method of the toe bearing pile in the soil, which are of practical guiding significance.

The bearing capacity of super-long and large-diameter bored pile tip is influenced by the facts including construction process,depth effect,size effect and so on.

The analysis of pile tip settlement measuring and the data of pile testing,has ex-pressed that the stress-strain process of upper loads on pile shaft and foundation soil has elastic deformation characteristics of both pile and foundation soil.