고속전철 강화노반의 침하특성에 관한 연구

초록

The design criteria of reinforced roadbed is determinated by cyclic loading, drainage, geology, etc. Among others roadbed stiffness is most important. In this paper, settlements of roadbed concerned with upper-roadbed stiffiness and reinforced roadbed thickness are estimated. To analyze settlement characteristics of roadbed, we perform numerical analysis using 3-dimension model and cyclic loading test using soil box and dual-actuator To similar with actual roadbed condition, 1/2 symmetric model is used with frequency and number of moving load. Through this test, we estimate elastic and plastic settlement and stress condition of the roadbed each case. From these results, settlement characteristics is derived which explain roadbed settlement concerned with roadbed stiffness and reinforced roadbed depth.