Dynamic reaction of large floating structures and connectors for marine airports under severe ocean conditions

Lijun Wang , Shitang Ke , Hehe Ren

Abstract

To ensure the safety performance of VLFS at marine airports, it is essential to accurately estimate dynamic response under extreme marine conditions. The characteristics of VLFS at marine airports and the dynamic reaction of connectors play a crucial role. This study simulates water tank experiments under extreme wind-wave interactions using STAR-CCM+ and CFD FEM. It analyzes the vertical displacement of a single module of VLFS in marine and how it is affected by wavelength and direction from a frequency domain. And dynamic response of connectors how it is affected by various sea conditions, wave directions, and connectors stiffness. Research indicates that vertical displacement caused by elastic deformation cannot be ignored. The vertical displacement achieves maximum magnitude when the wavelength approaches the length of the floating body. When the wave angle increases or decreases, the amplitude of vertical displacement does not show a monotonically rising or falling pattern. Transverse loads are more strongly impacted by wave angle than in the other two directions, and the load values on the connectors are especially sensitive at wave angles of 45° and 60°. The stiffness of the connectors should be lower than the K6 for designing VLFS at marine airports.

Key Words

CFD-FEM; dynamic reaction; extreme winds and waves; frequency domain analysis; marine airports; VLFS

Address

Lijun Wang — 1)Department of civil and airport engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China 2)Department of civil engineering, Jincheng College of Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Shitang Ke — 1)Department of civil and airport engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China 2)Department of civil engineering, Jincheng College of Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
Hehe Ren — 1)Department of civil and airport engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China 2)3Jiangsu Airport Infrastructure Safety Engineering Research Center, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China

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