Lug Arrangement and Dynamic Analysis of Lifting Simulation for Underwater Installation of Structure in Asymmetric Position

비대칭 위치의 수중 구조물 설치를 위한 러그 위치 산정 및 리프팅 동역학 해석

  • Received : 2014.11.24
  • Accepted : 2015.06.02
  • Published : 2015.08.20


RGT(Riser Guide Tube) is a part of mooring on the bottom of a turret system to be connected with a production riser, and DBSC(Diverless Bend Stiffener Connector) is a latching component between them. In this paper, appropriate lug arrangement is decided mathematically for the case that a DBSC is lifted and installed on a RGT under the water while FPSO is under construction. Considering asymmetric arrangement & position of RGT and initial lug position, additional lug positions are determined by using an optimization method. The modified installation scheme with new lug points is investigated with a lifting simulation system, SIMSON. The simulation result shows that the installation of DBSC on RGT under the given conditions is quite feasible; therefore the mathematical method is proven to be appropriate.


Diverless bend stiffener connector;Lug arrangement;Lifting simulation


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