지오그리드를 활용한 철도노반의 보강효과 및 설계기법 개발에 관한 연구

A Study on Reinforcement Effectiveness and Development of Design Method for Railway Roadbed by Geogrid

Since 1970's in Germany and U.S.A., the studies on increasing the bearing capacity of railway roadbed using geogeid have been conducted for the repair, reinforcement, and extention of railways constructed on soft soils. In this study, the railway roadbed system reinforced with geogrids has been analyzed and investigated using finite element method and results of the previous studies were conducted in Korea and other nations. And the method for estimating the railway roadbed thickness was developed based on the equivalent method using the multi-layer theory and the deformation modulus Ev.