Development and preliminary investigation for a resilient modulus prediction model of sub-ballast and subgrade materials

摘要

An alternative method for resilient modulus evaluation was developed using nonlinear dynamic stiffness, which can be measured by in-situ and laboratory seismic techniques. The resilient modulus prediction model was verified by comparing the calculated and measured vertical displacements during train passages. The proposed model performs well and maintains its consistency as well because of its dependency on well developed seismic measurement techniques.