한국해안·해양공학회논문집 (Journal of Korean Society of Coastal and Ocean Engineers)

  • 제33권2호
  • /
  • Pages.80-91
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  • 2021
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  • 1976-8192(pISSN)
  • /
  • 2288-2227(eISSN)
한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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울산신항의 파랑을 이용한 항만공사 작업일수 산정방법 연구

A Study on the Method of Calculating the Number of Working Days for Harbor Construction using the Wave of Ulsan New Port

  • 백종대 ((주)해안해양기술) ;
  • 정원무 (한국해양과학기술원 해양ICT융합연구센터) ;
  • 이종인 (전남대학교 공과대학 토목공학과) ;
  • 최혁진 ((주)해안해양기술) ;
  • 김미경 (한국해양과학기술원 해양ICT융합연구센터)
  • Back, Jong-Dai (Coast and Ocean Technology Research Institute, A-2511 Hyundai Knowledge Industrial Center) ;
  • Jeong, Weon-Mu (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology) ;
  • Lee, Jong-In (Department of Civil Engineering, Chonnam National University) ;
  • Choi, Hyuk-Jin (Coast and Ocean Technology Research Institute) ;
  • Kim, Mee-kyung (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
  • 투고 : 2021.03.03
  • 심사 : 2021.04.20
  • 발행 : 2021.04.30
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초록

본 연구는 항만건설 시 파랑의 영향을 많이 받는 동해안의 울산신항을 대상으로 2020년 해양수산부에서 제시한 파랑출현율에 의한 비작업일수 산정방법의 적정성을 검토하고 개선방법을 제안하기 위해서 수행하였다. 이를 위해서 울산신항 남방파제 2-1공구 축조공사 시의 공사일지를 수집하였으며, JMA-MSM 바람장을 이용하여 2010년에서 2019년까지 10년간의 고정밀 후측파랑 추산자료를 생성하였다. 파랑 추산자료는 WINK에서 제공하는 품질관리된 울산부이와 울산신항 파랑 관측자료를 이용하여 정확도를 검증한 결과 결정계수(R2)가 0.96과 0.95로 정도 높게 산정되었다. 2015년 1월 1일부터 12월 31일까지 수행한 주요공정인 지반개량공(DCM)을 대상으로 공사일지를 분석한 결과 파랑에 의한 비작업일수는 43일로 나타났다. 본 연구에서 제안하는 일별 작업한계 파랑조건을 적용한 경우 48일로 산정되어 공사일지 대비 5일 차이가 발생하였다. 하지만 차이가 발생한 5일의 경우 2일은 피항, 2일은 작업 대기 등으로 작업을 거의 못한 것으로 나타나, 본 연구에서 제안하는 일별 작업제한 파랑조건을 적용한 방법의 정확도가 높은 것으로 판단되었다. 최종적으로 2010년에서 2019년까지 10년간의 후측파랑 추산자료를 이용하여 일별 작업제안 파랑조건으로 산정한 비작업일수는 39일로 계산되었다. 이는 기존의 파랑출현율에 의한 방법으로 산정된 28일에 비해서 11일 많게 산정된 것이다.

This paper is about to review the propriety of the method for calculating the number of non-working days based on the wave appearance rate proposed by the Ministry of Oceans and Fisheries in 2020, and to propose an improved method for the Ulsan New Port on the East Sea which is greatly affected by waves during port construction. To this end, the construction daily reports of Ulsan New Port southern breakwater section 2-1 have been analysed and the high-precision wave hindcasting data for 10 years from 2010 to 2019 using the JMA-MSM wind field are generated. As a result of the accuracy of the wave hindcasting data using the quality-controlled Ulsan buoy and Ulsan New Port wave observation data provided by WINK, the coefficient of determination (R2) is as high as 0.96 and 0.95. According to an analysis of the construction daily reports for the deep cement mixing method (DCM), a major process performed from January 1 to December 31, 2015, the number of non-working days due to wave is 43 days. When the daily work limiting wave condition proposed in this study is applied, it is calculated as 48 days, resulting in a difference of 5 days from the construction daily reports. However, in the case of the 5 days when the difference occurred, 2 days was little worked for the escape and 2 days was not worked for the waiting. It is inferred that the accuracy of the method to which this daily work limiting wave condition proposed in this study is applied is very high. Finally, the number of non-working days calculated as the daily work limiting wave condition is calculated as 39 days, using the wave hindcasting data for 10 years from 2010 to 2019. This is 11 days more than the 28 days calculated by the wave appearance rate method.

키워드

참고문헌

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