A Protection Capacity Evaluation of Vessel Protective Structures by Quasi-Static Collision Analysis

준정적 충돌해석을 통한 선박충돌방공호의 방호능력평가

  • 이계희 (목포해양대학교 해양.플랜트건설공학과)
  • Received : 2011.10.28
  • Accepted : 2011.11.30
  • Published : 2011.12.31

Abstract

In this study, the vessel collision protective structure and the vessel were modeled numerically and the quasi-static collision analysis was performed to evaluate the maximum protection capacity. In the modeling process of protective structure, the nonlinear behaviors of structure and the supporting conditions of ground including pull-out action were considered. In that of collision vessel, the bow of vessel was modeled precisely, because of the nonlinear behaviors were concentrated on it. For the efficient analysis, the mass scaling scheme was applied, also. To evaluate the differences and efficiency, the dynamic analyses were performed for the same model, additionally. Based on the obtained energy dissipation curves of the structure and the vessel, the moment that the collision force affected to the bridge substructures was determined and the maximum allowable collision velocity was evaluated. Because of the energy dissipation bound can be recognized clearly, this scheme can be used efficient in engineering work.

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