Comparative analysis of precast square piles and PHC piles for flood protection work in soft soil areas

Based on the static load tests on pretensioned high-strength concrete piles (PHC pipe) and precast square piles in the same test field of soft soil area of Wenzhou flood dike project in Zhejiang Province, the load-settlement curves, shaft load distribution curves and behaviors of skin resistance of these two types of piles are compared. The experimental results show that, for the PHC pipes and precast square piles with the same lateral area and pile length in soft areas, the behaviors of skin resistance and base resistance are different, although their axial forces, lateral friction forces and base resistances appear closely similar.