Safety Analysis for Installation of Offshore Structure based on Proportional-Derivative Control Strategy with Multibody System

  • Cha, Ju-Hwan (Department of Naval Architecture and Ocean Engineering, Mokpo National University) ;
  • Nam, Bo-Woo (Korea Research Institute of Ships & Ocean Engineering) ;
  • Ha, Sol (Department of Naval Architecture and Ocean Engineering, Mokpo National University)
  • 투고 : 2018.01.27
  • 심사 : 2018.03.22
  • 발행 : 2018.03.31


In this paper, safety analysis of the process of installing offshore structures such as manifolds and jacket-type substructures using floating cranes and barges in waves is performed. The safety analysis consists of three components. First, the dynamic responses of the offshore structure, cranes, and barge, all of which are moored and connected using wire ropes, are analyzed. Second, tensions in the wire ropes connecting the cranes and the offshore structures are calculated. Finally, any collision between the offshore structure and the cranes or the barge that transports the offshore structure is detected. Equations of motion of the offshore structure, cranes, and barge are formulated based on multibody dynamics, as well as considering the hydrostatic, hydrodynamic, and mooring forces. Additionally, proportional-derivative control of the tagline between the cranes and the offshore structure is performed to verify the safety of the installation process, as well as for reducing the dynamic response and collisions among them.



연구 과제번호 : Development of Core Installation Technologies for Floatover and Dual Crane Methods

연구 과제 주관 기관 : Ministry of Oceans and Fisheries, Mokpo National University


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