• Title/Summary/Keyword: Security and mechanical characteristics of the tunnel lining

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A Study on the Mechanical Characteristics of Tunnel Structures and Ground Behavior by Synthetic Analysis Method with Tunnel Monitoring Results used (터널의 계측결과 종합분석에 의한 지반의 거동 및 터널 구조체의 역학적 특성 연구)

  • Woo, Jong-Tae
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.7 no.3
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    • pp.115-124
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    • 2003
  • In this study, the relationships between the displacement and stress of the tunnel using various analysis methods were compared with monitoring results carried out during construction and maintenance monitoring. The behavior of tunnel were measured in the subway tunnel passing comparative soft the weathering and analyzed both security and mechanical characteristics of the tunnel lining. With the results of simplified monitoring observed in top heading and bench excavation tunnel, it is confirmed that the crown settlement is larger than the surface settlement. it is interesting to note that the crown settlement and the crown shotcrete lining stress are widely used monitoring items for the back analysis. It is analyzed that the residual water pressure applied in the drainage type tunnel is reasonable.

A Safety Analysis of Tunnel Lining for Monitoring (계측에 의한 터널 라이닝의 안전성 분석)

  • Woo, Jong-Tae;Lee, Song
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.6 no.3
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    • pp.103-110
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    • 2002
  • Maintenance monitoring of the tunnel which offers continuous data during and after tunneling has been applying to tunnels in order to meet the maintenance of tunnel and to confirm continuous security of the tunnel after tunneling. But, the maintenance monitoring of tunnel results for long period is not easy to find, and moreover, the rational analysis method on tunnel monitoring has not been established yet. In this study, the relationships between displacement and stress of the tunnel concrete lining using various analysis methods are compared with maintenance monitoring. The tunnel behavior were measured in the subway tunnel passing comparative soft the weathering and analyzed both security and mechanical characteristics of the tunnel concrete lining. Also, analyzed relationship between residual water pressure applied on tunnel design and one obtained by monitoring.