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Tunnel Pressure acting on Shallow Tunnel in Unconsolidated Ground  

Lee, Jae-Ho (Dept. of Civil Engineering, Kyungbook National University)
Akutagawa, Shinish (Dept. of Architecture and Civil Engineering, Kobe University)
Kim, Young-Su (Dept. of Civil Engineering, Kyungbook National University)
Moon, Hong-Duk (Dept. of Civil Engineering, Jinju National University)
Publication Information
Tunnel and Underground Space / v.17, no.6, 2007 , pp. 453-463 More about this Journal
Abstract
Terzaghi's tunnel pressure theory is generally used to estimate primary design pressures on tunnel support for shield and urban NATM tunnels until now. A trial is made in this paper to investigate the interaction between the ground deformation behavior and Terzaghi's tunnel pressure, which assumes pound's limit (or critical) state, by considering results of 'Terzaghi's tunnel pressure theory. two-dimensional reduced-scale model tunnel tests and nonlinear numerical analysis based on strain softening modeling. A full understanding between tunnel pressure and ground deformation behavior under the tunnel excavation and an effective utilization of this interaction lead to an economical tunnel support design and a safe construction of tunnel.
Keywords
Tunnel pressure; Terzaglli's theory; Model tunnel test; Numerical analysis;
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