Study on the Mechanism of Ultimate Bearing Capacity of a Pile in Soft Rock

This paper estimates the ultimate bearing capacity of a pile in soft rock while taking into account the mechanical characteristiics of soft rock.Based on previous achievements of literature,the soil model-DuncanZhang model,is used to calculate the ultimate bearing capacity with the nonlinear finite element method.The results of test piling are presented to check the correction of previous methods of elastic and nonlinear finite element in above literature.The reasons for difference are also discussed.