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    Determining radius of influence of the face in EPB shield tunneling by finite difference method

    WTC2014-PAP382-Determining radius.pdf (1.209Mb)
    Access Status
    Open access
    Authors
    Sharifzadeh, Mostafa
    Gharehdash, S.
    Barzegar, M.
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Gharehdash, S. and Barzegar, M. and Sharifzadeh, M. 2014. Determining radius of influence of the face in EPB shield tunneling by finite difference method, in Negro, A. and Cecílio, M. and Bilfinger, W. (eds), Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life, May 9-15 2014. Foz do Iguaçu, Brazil: CBT/ABMS.
    ISBN
    978-85-67950-00-6
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/75186
    Collection
    • Curtin Research Publications
    Abstract

    For the purpose of understanding the three-dimensional behavior of face tunnel, a three-dimensional finite difference simulation model, which includes all relevant shield tunneling components and allows for the modeling of the step-by-step construction process of the tunnel advance. The soil-structure interaction in shield tunneling is investigated by numerical solution. The results of three-dimensional ground displacements and stress pattern around a tunnel face and at the ground surface are examined. Results obtained from these analyses indicate that the general threedimensional stress and displacement patterns around a tunnel heading are very different from that at the plane strain transverse section. The distance required for the ground displacement to reach the plane strain condition will depend on the amount of plasticity developed around the tunnel opening. Consequently, face is the most important zone for the design engineer in EPB tunneling.

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