A Vertical Bearing Capacity Experimental Analysis of Prestressed Concrete Piles Based on Material Constitutive Relation of Piles and SoilFan Yi, Weijun Yang, Zhaopu Shen, Yi Yang and Binhua XiaMATEC Web Conf., 67 (2016) 07021DOI: https://doi.org/10.1051/matecconf/20166707021