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A New Method for Elasto-Plastic Analysis of Concrete Lining Installed in a Deep Circular Tunnel  

Lee, Youn-Kyou (군산대학교 해양건설공학과)
Park, Kyung-Soon (군산대학교 대학원 해양산업공학과)
Song, Won-Kyong (한국지질자원연구원 지구환경연구본부)
Park, Chul-Whan (한국지질자원연구원 지구환경연구본부)
Choi, Byung-Hee (한국지질자원연구원 지구환경연구본부)
Publication Information
Tunnel and Underground Space / v.19, no.4, 2009 , pp. 355-365 More about this Journal
Abstract
This paper proposes an elasto-plastic finite difference method which is useful for the stability evaluation of concrete lining installed in a deep circular tunnel. Mohr-Coulomb criterion is assumed for the condition of yielding in both the rock mass and concrete lining. In order to take into account the installation delay of lining after the excavation, the outer boundary pressure acting on the lining was calculated with the consideration of the convergence occurred before the lining installation. The distributions of stress and displacement in the rock mass and lining were calculated based on the method proposed Lee & Pietruszczak (2008). The applicability of the proposed method was demonstrated by conducting the elasto-plastic analysis of concrete lining supporting an imaginary compressed air storage tunnel. The analysis result revealed that the exact determination of the boundary pressures acting on the concrete lining is of importance in the stability analysis of concrete lining.
Keywords
Concrete lining; Elasto-plastic analysis; Circular tunnel; Mohr-Coulomb rockmass; Finite difference analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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