• Title/Summary/Keyword: Time-of-arrival (TOA)

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A real-time construction management of a tunnel using position tracking sensor (위치추적 센서를 이용한 터널의 실시간 시공관리)

  • Lee, Kang-Hyun;Kim, Dae-Won;Mun, Sung-Mo;Cho, Hun-Hee;Kang, Kyung-In;Lee, In-Mo
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.13 no.2
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    • pp.133-148
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    • 2011
  • Construction sites are becoming larger and complex with the growth of national economy. Accordingly, it is important to identify real-time information about materials, equipments, and manpower during construction at sites. Even though research utilizing position tracking sensors has been conducted in architectural engineering fields, this area of research is almost nil in civil engineering fields. Therefore, a feasibility study to find a way to apply position tracking sensors to an in-situ tunnel construction site adopting conventional tunnelling method is performed in this study. A methodology is proposed that the progress management of the tunnelling work can be monitored by checking construction materials needed at job site and the safety management system can be assessed by checking distance between in-situ workers and construction equipments. The most representative materials were identified so that IT technology can be applied by attaching and monitoring sensors to the selected materials. Also, time of arrival (TOA) for a position determination technology along with a wireless network technology was chosen and build wireless network system. The adopted methodology was applied to an in-situ tunnelling site, and verified the usefulness of the proposed system.