| Title |
Predicting Long-Term Deformation of Road Foundations under Repeated Traffic Loadings |
| Keywords |
repeated traffic loading;road foundations;long-term deformation;mechanistic-empirical approach;finite element analysis;반복 교통하중;도로기초;장기변형;역학-경험적 방식;유한요소해석 |
| Abstract |
Generally, the repeated traffic loading condition should be considered to predict the long-term deformation on road foundations or foundation systems. However, it is not easy to estimate long-term deformation on multi-layered system like roads and railways. For more quantitative analysis, mechanistic-empirical approach requires proper analytical tool, material"s model, and material properties of foundation geomaterials under both traffic and environmental loadings. In this study, therefore, laboratory data from the long-term repeated load triaxial tests were used to predict accumulated deformation on pavement foundations and the results were analyzed based on the nonlinear, models and stress state considered. All these results are presented and verified on laboratory based scale using the finite element analysis with the deformation characteristics of foundation geomaterials at various stress states. |