• 제목/요약/키워드: Ice-infested Area

검색결과 3건 처리시간 0.01초

비내빙설계 해군 함정의 결빙지역 운항 능력 평가 (Evaluation of the Capability of Non-Ice Strengthened Naval Vessels for Operation in Ice-Infested Area)

  • 김현욱
    • 한국군사과학기술학회지
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    • 제24권2호
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    • pp.151-164
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    • 2021
  • With the gradual increase in the ROK naval power, it is an undeniable fact that the time of operation in the ice-infested area will be necessary in the near future. Recently, cases of ice formation around Korean waters in wintertime have been frequently reported. However, in the case of the ROK naval vessels to date, it is a fact that the ice-strengthened perspective has not been considered from the design stage. In this study, the capability of operation in the ice-infested area of the ROK naval vessels, which did not take into account the ice-strengthened design, was reviewed through the evaluation of the vessel's structural integrity in accordance with the sea ice conditions.

빙쇄굴 모델에 의한 극지 해저 파이프라인의 매설깊이 산정 (Estimation of burial depth for arctic offshore pipelines by an ice scour model)

  • 윤기영;최경식
    • 한국해양공학회지
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    • 제11권2호
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    • pp.1-10
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    • 1997
  • The interaction of ground ice features with underlying seabed is one of the major considerations in the design of Arctic pipeline systems. Regarding the development of offshore gas field near Sakhalin Island, which is an ice-infested area, in this paper an ice scour model to determine the burial depth of Arctic offshore pipeline is studied. Using a simplified ice-seabed interaction process, ice scour depth is easily estimated. This nonlinear numerical model can simulate the scouring process for various enviromental parameters such as ice mass, incoming velocity, soil strength. This study also deals with interaction forces during the scouring process in sloping seabed conditions and discusses the ice loads that are transmitted through the seabed soil.

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平坦氷荷重을 받는 細長形 해양구조물의 動的 거동 (Dynamic Responses of a Slender Offshore Structure Subject to Level Ice Load)

  • 최경식
    • 한국해양공학회지
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    • 제9권2호
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    • pp.156-166
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    • 1995
  • Regrading the development of offshore natural gas field near Sakhalin Island which is an ice-infested area, this study aims to estimate the dynamic ice load for construction of offshore structures operating in this region. In this paper the design ice load and dynamic responses of a slender Arctic structure upon continuous ice movement are sutdied. Crushing agter a certain elastic deformation is assumed as a primary failure mechanism at the contact zone between semi-infinite level ice edge and the face of structure. Dynamic interaction forces are calculated using a modified Korzhavin's equation and a two-dimensional ice-structure interaction model is adopted. To verify the numerical model, dynamic analysis is performed for on of the Baltic Sea channel markers whose response patterns were presiously observed.

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