Research On Settlement Characteristics Of Expressway Soft Ground

The reliability of secant modulus method is validated in which final consolidation settlement is computed. The experience formula of coefficient of permeability (k,0) and pore ratio (e) is presented and the experience expression of coefficient of permeability (k10) and strain () is offered too.lt is important to modity the acquiring method of coefficient of consolidation, because the method embodies that strain and pressure of consolidation effect on coefficient of consolidation.In this paper, Terzaghi' s single one dimensional consolidation theory is reformed and make it use widely.A mathematical model is founded which embodies that load deformation and time effect on final consolidation settlement. The mathematical model is used in the simulation of the course of consolidation settlement and a program is edited .The program presents the regularity ofload time and consolidation settlement.Finally the computing results are compared with the measurement in field,which is satisfactory.