Nonlinear dynamic analysis of float-over deck installation for a GBS platform based on a constant parameter time domain model

Float-over deck installation has become a reliable and cost-effective method of installing heavy integrated decks for various types of offshore platforms, such as the jacket and GBS platforms. This operation involves a number of inherent complexities such as the strong nonlinear interactions between the multi-body system and environment. Therefore, dynamic modelling of the float-over system during the deck load transfer stage is a challenging task. Particularly, the wave-induced impacts among the deck, barge and platform substructure may generate strong nonlinear dynamics that cannot be accurately investigated by the current standard simulation packages. This study develops a constant parameter time domain model (CPTDM) based on Cummins equation and state-space model for analysing the nonlinear dynamics arising from the float-over deck installation of a GBS platform. Frequency domain hydrodynamic analyses of the installation barge carrying the deck with and without the presence of the GBS are both carried to identify hydrodynamic interactions. A code-to-code verification is performed to verify the accuracy and efficiency of the developed CPTDM by comparing the present results with ANSYS-AQWA. Based on the verified model, the nonlinear dynamics of the GBS platform at different load transfer stages are investigated by using Poincare maps, bifurcation diagrams and phase trajectories.

• Record URL:
  https://doi.org/10.1016/j.oceaneng.2021.109443
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S0029801821008489
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2021 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Zhu, Ling
  • Zou, Meiyan
  • Chen, Mingsheng
  • 0000-0002-9272-7893
  • Li, Lin
  • 0000-0001-9654-8318
• Publication Date: 2021-9-1

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 109443
• Serial:
  • Ocean Engineering
  • Volume: 235
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Impact; Installation; Ocean waves; Offshore platforms; Time domain analysis
• Subject Areas: Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 01781727
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 20 2021 2:52PM