DEFINITION OF THE LOADING REGIME ON OFFSHORE STRUCTURES FROM DRIFTING ICE COVERS

Designers of ice resistant offshore structures in ice covered seas require information not only on extreme ice forces but also on the middle values. Information is also required on ice force variances during a structures life time and reliability analysis. This problem can be solved by modelling ice forces as a stochastic process. Statistic modelling theory was used to consider the stochastic nature of the main parameters of change which influence drift ice cover-structure interaction. A model of the ice force action was developed based on a mathematical model of the failure process at the contact surface and statistical data on the ice regime parameters in situ. The proposed model allowed the ice forces to be obtained as a stochastic process or in other words with main force characteristics. For the application of the simplified model of ice failure process, the ice force distribution, number of cycles and other parameters are estimated as stochastic values. The given information can be expressed as histograms of ice parameters distribution or as time curves of stochastic values with their probability characteristics.

  • Supplemental Notes:
    • IST '95, Northern Sea Route; Future & Perspective; INSROP Symposium; 1-6 Oct 1995; Tokyo, Japan. Procs. Publ by Ship & Ocean Foundation, Japan. Ppr TSI-5, p 405 [3 p, 5 ref, 4 fig]
  • Authors:
    • Bekker, A T
    • Seliverstov, V I
    • Uvarova, T E
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00728287
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM