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The Analysis of Tunnel Behavior using Different Constitutive Models  

Kim, Young-Min (전주대학교 공과대학 토목환경공학과)
Kang, Seong-Gwi (전주대학교 공과대학 토목환경공학과)
Publication Information
Tunnel and Underground Space / v.20, no.2, 2010 , pp. 73-81 More about this Journal
Abstract
The paper presents the application of FE simulations of NATM tunnel using different constitutive models. The results from a series of two dimensional plane strain finite element analyses of medium-liner interaction for NATM are presented. Four types of constitutive models are considered, namely, linear elastic, elasto-plastic Mohr-Coulomb, Hardening-Soil, Soft-Soil model. The design for tunnels requires a proper estimate of surface settlement and lining forces. It is shown that the advanced constitutive model gives better predictions for both ground movement and structural forces.
Keywords
Finite element method; Tunnel design; NATM; Constitutive model;
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