Based on the test data of fifty nine static loading tests driven into gravel stratum of precast concrete piles and the results of standard penetration test in the layers beside the pile
combining with the results of the in-situ stress tests of seven precast concrete piles
the end resistance
the partake scale of end resistance with total load acting on the pile and the displacement to exerting the end resistance of pile are analyzed. Through the test data of one hundred and twenty one static loading tests and the final pressure acting on the pile
the relationship between the ultimate bearing capacity and the final pressure acting on the pile of precast concrete pile statically pressed into gravel stratum is discussed.