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

초록

The model parameters were evaluated for typical materials of sub-ballast of subgrade such as weathered soil, crushed stone, and crushed rock-soil mixture. To assess the model and its parameters, the elastic response of the test trackbed near PyeongTaek, Korea was calculated using a 3-D elastic computer program (GEOTRACK) and compared with measured elastic vertical displacemets during the passages of freight and passenger trains.