대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제33권4호
  • /
  • Pages.1471-1478
  • /
  • 2013
  • /
  • 1015-6348(pISSN)
  • /
  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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수치해석을 이용한 이중보온관 발파진동 관리기준에 관한 연구

A Study on Blasting Vibration Control Criteria for Pre-insulated Pipe through the Numerical Analysis

  • 최봉혁 (한양대학교 대학원) ;
  • 조진우 (한국건설기술연구원, Geo-인프라연구실) ;
  • 김진만 (한국건설기술연구원, Geo-인프라연구실) ;
  • 유한규 (한양대학교 건설환경공학과)
  • 투고 : 2012.08.24
  • 심사 : 2013.07.10
  • 발행 : 2013.07.30
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초록

본 논문에서는 이중보온관의 발파진동 관리기준 제시를 위하여 이격거리와 매설심도를 변수로하여 수치해석을 수행하였다. 수치해석 적용 발파하중 모델은 현장시험 결과와의 비교를 통하여 검증하였다. 수치해석 결과, 이중보온관은 진동속도 4.0cm/sec 이상에서 발생 유효응력이 내관의 허용응력을 초과하거나 근접하는 것으로 나타났으며, 4.0cm/sec 이하에서 안정성이 확보되는 것으로 평가되었다. 따라서, 이중보온관의 진동관리기준은 4.0cm/sec를 초과하지 않도록 관리하여야 할 것으로 판단된다.

In this paper, numerical analysis with varying distance and burial depth was performed to recommend the blasting vibration control standard for pre-insulated pipes. The blasting load model applied in the numerical analysis was verified to the comparison with the results of the field tests. It was determined from the results of the numerical analysis that the effective stress either exceeds or approaches the allowable stress of the inner steel pipe for vibration velocity greater than 4.0cm/sec while stability is obtained for vibration velocity below 4.0cm/sec. Therefore, it was determined that the blasting vibration control criteria for pre-insulated pipes must not exceed 4.0cm/sec.

키워드

참고문헌

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