Tunnel Pressure acting on Shallow Tunnel in Unconsolidated Ground

미고결 저토피 터널에 작용하는 토압에 관한 연구

  • 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)
  • Published : 2007.12.31


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.


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