GEOTRACK을 이용한 철도노반의 침하 및 응력 특성 분석

초록

Railroad track consists of relatively simple structures such as rail, tie, ballast. Roadbed shares vertical pressure by train load which passed through rail to ballast as base that supports the track. For evaluating stress and displacement of roadbed due to the railroad load is an important role on the track as a basic data for estimation of the durability and design of the roadbed thickness design. Chang et al.(1979) developed GEOTRACK program that model is applied multi-layered theory to analyze railroad track structure. GEOTRACK program is a sort of numerical analysis program which has advantage that can analysis component of track by simple method. In this study, this program was used to perform the numerical analysis by changing track condition and roadbed condition of sleeper, reinforce roadbed, dynamic wheel load, elastic modulus, and so on.