콘크리트라이닝 최적화 설계를 위한 이완하중 산정식 적용방안에 대한 연구

Design of concrete lining is require to optimizing the concrete lining for the safety and economic efficiency. Relaxed rock loads is important in the design factor of the concrete lining. The empirical method is difficult in calculating the loosening load around a tunnel periphery clearly. Equations of limit equilibrium analysis is difficult to apply complex boundary conditions and soil conditions. Also, Numercal methods are necessary to verify relaxed rock loads values that each designer is calculated. In this study, In order to apply the empirical formula, equations of limit equilibrium analysis and numerical approach effectively, the boundary conditions based on ground characteristics and layers conditions is proposed.