Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Electromagnetic wave shielding effectiveness of steel fiber reinforced concrete

강섬유 보강 콘크리트의 전자파 차폐효과

  • Lee, Gyu-Phil (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Soon-Wook (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) ;
  • Bae, Gyu-Jin (Geotechnical Engineering Research Division, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Young-Taek (TBM TF, SK Engineering & Construction)
  • 이규필 (한국건설기술연구원 지반연구소) ;
  • 장수호 (한국건설기술연구원 지반연구소) ;
  • 최순욱 (한국건설기술연구원 지반연구소) ;
  • 배규진 (한국건설기술연구원 지반연구소) ;
  • 박영택 (SK건설 TBM TF)
  • Received : 2015.01.09
  • Accepted : 2015.02.17
  • Published : 2015.03.31
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Abstract

As TBM construction method is widely applied to construct underground transmission lines, increasing attention has been drawn to SFRC(steel fiber reinforced concrete) segment with respect to structural characteristics. Health hazards of electromagnetic wave which the underground transmission lines emit has emerged, and there is a concern that electromagnetic wave can be amplified because a segment characteristic such as electrical conductivity is changed by steel fibers. In order to analyze correlation between steel fiber dosage and electromagnetic wave, the specimens were fabricated on three conditions to perform experimental tests. From the measured data, it is proven that there is no correlation between the electromagnetic wave and steel fiber reinforced concrete.

전력구 방식의 지중 송전선로 시공시 TBM 공법이 널리 적용되고 있으며, 세그먼트의 구조적 특징에 따라 강섬유 보강 콘크리트를 이용한 세그먼트의 개발과 사용이 크게 증가하는 추세이다. 그러나 최근 지중 송전선로 구간에서의 전자파 유해성에 대한 문제가 대두되고 있으며, 세그먼트 제작시 투입되는 강섬유의 영향으로 콘크리트의 전기전도성 등이 변화되고, 이로 인하여 더 많은 전자파가 지상에서 계측될 수 있다는 우려가 야기되고 있다. 따라서 본 연구에서는 강섬유 보강 유무 및 사용량 변화조건에 따른 전자파의 차폐효과를 분석하기 위하여, 3가지 조건에 대한 실험체를 제작하여 관련 실험을 수행하였으며, 실험결과 강섬유 보강콘크리트와 전자파 발생 상관관계는 없는 것으로 나타났다.

Keywords

References

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