Performances of Large-Diameter Cast-in-Place Concrete Pipe Piles and Pile Groups under Lateral Loads

Abstract

AbstractLarge-diameter cast-in-place concrete pipe (PCC) pile is widely used for pile foundation and pile-supported embankment over soft clay in China. However, studies on PCC pile-soil reactions (p-y curves) or performance of the pile groups under lateral load are not widely reported. A large-scale model test of a single PCC pile under lateral load is carried out, and its lateral bearing capacity, bending moment, and p-y curves are measured and analyzed. The deflection and bending moment of this PCC pile is calculated by the p-y curves method and modified pile modulus using LPILE software. Three-dimensional numerical analyses are conducted using ABAQUS software. The reliability and accuracy of the numerical simulation model are verified by comparing the results of the large-scale model test with the LPILE calculation. The distribution of deflection and bending moment along the pile and pile group efficiencies of the PCC piles are comparatively analyzed with those of a drilled shaft, which has the same co...