A Simplified Nonlinear Settlement Method for Multi-branch Pile

A nonlinear combination algorithm for settlement analysis of pile is proposed.Based on the load transfer method and the characteristics of pile lateral friction,the load transfer function of the three-fold line model is adopted.At the same time,according to the characteristics of pile tip resistance and branch end resistance,using the load transfer function of the hyperbolic model,the nonlinear expression of branch end resistance and displacement in conformity with the mechanical structure of the branch structure is proposed.It has good applicability and operability to set up the combined calculation method of pile settlement.