• Title/Summary/Keyword: DOCS 내공변위 자동계측시스템

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A Study on the Application of Convergence Measurement System to Inverse Calculation of Tunnel Lining Sectional Forces (터널 라이닝 단면력 역산을 위한 유지관리 내공변위계측시스템 적용 연구)

  • 이대혁;김기선;한일영;박연준;유광호
    • Tunnel and Underground Space
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    • v.11 no.2
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    • pp.146-155
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    • 2001
  • An inverse calculation method to obtain sectional forces, axial force and flexural moment of a tunnel concrete lining was developed by utilizing convergence measurements acquired at the maintenance stage. To monitor the behavior of the lining, DOCS system was applied to a subway tunnel section. The method was proved to be effective, yielding the same results as measured forces of buried instruments. Many effects such as vibration of sensors, vibration due to test train operation, the variation of temperature and high voltage were checked and a new management scheme for tunnel maintenance was proposed.

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Case Studies on Applications of Convergence Measurement Systems at the Stages of Tunnel Construction and Maintenance (터널 시공 및 유지관리 단계 내공변위 계측시스템 적용사례 연구)

  • Lee, Dae-Hyuck;Han, Il-Yeong;Kim, Ki-Sun;Jin, Suk-Woo
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.2 no.3
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    • pp.59-69
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    • 2000
  • Three-dimensional total station system which integrated the instrument with Target Pin and TEMS 3D software developed by SKEC R&D center was applied to a tunnel excavation for monitoring of convergence and crown settlement. The efficiency of the system was proved as the result in the aspects of exact monitoring and prediction of rock conditions ahead of the face. To monitor the behavior of tunnel lining at the maintenance stage, DOCS system was applied to the subway tunnel section. Such many effects as the vibration of sensors, verification of the system efficiency, the effect of test trains operation, the variation of temperature and the effect of high voltage was checked. Thus the management scheme for tunnel maintenance was laid out as a proposal.

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