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Research Article

A Study on the Application of GFRP Rock Bolt Sensor through Field Experiment and Numerical Analysis

현장실험과 수치해석을 통한 GFRP 록볼트 센서의 적용성 연구

Seungjoo Lee1
,
Suk-Hyun Chang1
,
Kang-Il Lee2
,
Bumjoo Kim3
,
Joon Heo4
,
Yong-Seong Kim5*
이 승주1
,
장 석현1
,
이 강일2
,
김 범주3
,
허 준4
,
김 용성5*
1Member, Department of Regional Infrastructure Engineering, Kangwon National University, Kangwondaehak-gil 1 Chuncheon-si, Gangwon-do 24341, Republic of Korea
2Member, Professor, Department of Civil Engineering, Daejin Univ., 11-1 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
3Member, Professor, Department of Civil and Environmental Engineering, Dongguk University, 30 Pildong-ro 1-gil, Jung-gu, Seoul 04620, Republic of Korea
4Researcher, Rural Research Institute, Korea Rural Community Corporation, 870 Haean-ro, Sangnok-gu, Ansan-si, Gyeonggi-do 15634, Republic of Korea
5Member, Professor, Department of Regional Infrastructure Engineering, Kangwon National University, Kangwondaehak-gil 1 Chuncheon-si, Gangwon-do 24341, Republic of Korea
* Corresponding Author
30 December 2019. pp. 129-138
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Abstract

본 연구에서는 모니터링이 가능한 나선형 철근 록볼트 센서와 GFRP 록볼트 센서를 대형 모형사면에 매설하여 사면붕괴 현장실험을 수행하고 개별요소법 및 유한요소법의 수치해석을 수행한 후 사면붕괴 초기에 발생하는 비탈면의 거동 특성을 분석하였다. 또한, 현장실험과 수치해석 결과를 비교･분석하고 나선형 철근 록볼트 센서와 GFRP 록볼트 센서의 암반 사면붕괴 모니터링으로 현장 적용성에 대해 고찰하였다. 본 연구를 통해 스마트 사면 붕괴 예･경보 시스템을 개발하였으며 향후 이 시스템은 산사태 및 지반 붕괴 전조정보를 사전에 감지하여 붕괴위험 지역에 거주하는 주민들의 원활한 대피를 유도하는데 활용될 수 있을 것으로 판단된다.

In this study, the rebar rock bolt sensor and GFRP rock bolt sensor, which can be monitored, were embedded in a large model slope, and the behavior of slopes occurred in the early stage of slope collapse was analyzed after performing the field failure test, numerical analysis of the individual element method and finite element method. By comparing and analyzing the field test and numerical analysis results, field applicability of rock slope collapse monitoring on the rebar rock bolt sensor and GFRP rock bolt sensor was investigated. Through this study, smart slope collapse prediction and warning system was developed, which can be used to induce effective evacuation of residents living in the collapsible area by detecting landslide and ground decay precursor information in advance.

Keywords
Slope failure
Field experiment
Rock bolt sensor
Distinct element method
Finite element analysis

References
1
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2
Dowding, C. H., Su, M. B. and O'connor, K. O. (1988). Principle of time domain reflectometry applied to measurement of rock mass deformation, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 25(5), 287-297.
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3
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4
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6
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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 18
  • No :4
  • Pages :129-138
  • Received Date : 2019-11-18
  • Revised Date : 2019-11-28
  • Accepted Date : 2019-11-29
  • DOI :https://doi.org/10.12814/jkgss.2019.18.4.129
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