Research on the dynamic responses of a multi-module offshore floating bridge based on the three-dimensional hydroelastic theory in the time domain

This paper improves a numerical method to study the dynamic performances of floating structures in the time domain based on the three-dimensional hydroelastic theory, which can calculate the dynamic properties of floating structures with or without considering the effect of the various nonlinear factors and elastic deformation. Based on the numerical method, the computation program THAFTS-NATD was built. This program can consider the influence of the nonlinear generalized restoring force and nonlinear generalized incident wave force caused by the large motion of a floating body and instantaneous wet surface changes. In the present paper, a new offshore floating bridge was taken as the calculation object, and the motion responses under regular waves and random waves were calculated by the numerical method and THAFTS-NATD, and verified by the software AQWA and the experimental results. It was found that the motion responses of the floating bridge calculated by THAFTS-NATD without considering the nonlinear forces are in good agreement with the results obtained by AQWA. The motion responses of the floating bridge calculated by THAFTS-NATD considering the weak nonlinear generalized loads are more near the measured results than those without the effect of the nonlinear factors. Under the action of waves with high wave height, the weak nonlinear generalized loads obviously influence the motion response and mooring force of the floating bridge with a small draught. The present numerical method and program THAFTS-NATD can also be used to predict the dynamic responses of the offshore floating structures in the design stage.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2024.119314
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0029801824026520
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Miao, Yuji
  • 0000-0002-0758-047X
  • Chen, Xujun
  • Cheng, Xiaoming
• Publication Date: 2024-12-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 119314
• Serial:
  • Ocean Engineering
  • Volume: 313
  • 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: Bridges; Dynamics; Floating structures; Hydroelasticity; Mathematical models; Time domain analysis
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 01937097
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 18 2024 2:21PM