A Cyclic p-y Elastoplastic Model Applied to Lateral Loaded Pile in Soft Clays

The p-y method as a simplified analysis tool has been widely used to analyze the behavior of laterally loaded piles. This chapter develops a novel cyclic p-y elastoplastic model within the framework of the single-surface bounding surface theory. The model can capture the soil stiffness degradation during cyclic loading by incorporating the cumulative plastic displacement to an interpolation function of the elastoplastic resistance coefficient.