Optimization design on soft foundation post-processing procedure for highway thick filling area

In the course of construction, the free pore water in the weak soil of highway foundation is seldom discharged immediately, and the excess pore water pressure comes into being. Consequently, the thick filling does not consolidate in the following process of construction, which results in the delay of completing. Based on the features of filling construction and stress increment in the foundation, the characteristic of pore water pressure and its diversification are determined. The optimization design process is put forward in light of stress path method, which may be used as a reference in similar project.