Study on method comparison between quick and slow load in pile static test

On the basis of the method comparison study between quick and slow load static test from 54 pipe piles,the settlement difference rule between quick and slow load in every grade was obtained,the difference rule of the ultimate bearing capacity from quick and slow load test was achieved,the conversion formula of the settlement and the ultimate bearing capacity from quick load to slow load test was derived.And a quick load test method of pipe pile suitable for Tianjin area was presented in this paper.