Ballast water high-efficiency allocation optimisation modelling with dynamic programming for revolving floating cranes

作者：Liu, Zhi Jie^*; Jiang, Jian Yu; Lin, Cheng Xin; Sun, De Ping

来源：Ships and Offshore Structures, 2018, 13(8): 857-867.

DOI：10.1080/17445302.2018.1470914

• Ballast system
• ballast water adjustment
• ballasting decision model
• ballast tank
• dynamic programming

Ballasting with water tanks is essential for improving the efficiency, cost and safety of lifting operation with revolving floating cranes. An optimisation model of ballast water high-efficiency adjustment was presented for the tube tunnel type ballast system. The water level variation of each ballast tank during ballasting process, the ballast water filling mass from sea before lifting and discharging mass after lifting operation are taken as optimisation variables, the minimal ballasting time during lifting process as the optimisation objective, and keeping the hull balance and stability in the lifting process as the constraint conditions. The ballast water allocation optimisation can be characterised by a multi-step decision process, and a dynamic programming method is presented which divides the decision stages based on the crane revolving angles in the rotary lifting process. An example is given to illustrate and analyse the proposed model and approach.

• 出版日期2018
• 单位大连海事大学