Studied automated monitoring and control of load,automatic measurement of settling volume of test pile,in construction pile foundation test has been developed which comprises of pressure and placement sensors,data transferring and processing,data display and alarm system to achieve automation of pile foundation test procedures.

This paper describes the classification of the pile,the importance of test pile.

Self-balance test pile technique is applied to check the bearing capacity of big diameter cast-in-place pile,providing experience for similar problems in engineering.

The analysis of steep local drop in the Q-S curve from static load test on test pile reveals that the true soil condition at test pile location should be representative, and the differences in the true soil might cause deviations in pile load bearing capability.

Based on stratum analysis and estimation on bearing capacity of single pile,a new design on testing pile is put forward in this paper.

It may be good instruction for the design of testing pile and anchor pile in the static loading test.

After testing pile and determining the load bearing capacity of single pile,the single piling method is adopted for construction.

The construction parameters were obtained after many times of pile test.