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Hydro-Elastic Analysis of a Floating Bridge in Waves Considering the Effect of the Hydrodynamic Coupling and the Shore Sides

[+] Author Affiliations
Shi Deng, Torgeir Moan, Zhen Gao

Norwegian University of Science and Technology, Trondheim, Norway

Shixiao Fu, Wei Wei

Shanghai Jiao Tong University, Shanghai, China

Paper No. OMAE2018-78738, pp. V001T01A039; 14 pages
doi:10.1115/OMAE2018-78738
From:
  • ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology
  • Madrid, Spain, June 17–22, 2018
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5120-3
  • Copyright © 2018 by ASME

abstract

A new numerical method, which is based on three-dimensional (3D) potential flow theory and finite element method (FEM), is used to predict the wave-induced hydroelastic responses of flexible floating bridges. The floating bridge is discretized into several modules based on the positions of the pontoons which are connected by elastic beams. The motion equations of the entire floating structure are established according to the six degrees of freedom (6DOF) motions of each rigid module coupled with the dynamics of the elastic beams. The hydrodynamics loads on each module are considered as external loads and simultaneously applied. The method is extended to take into account the shore side effect, which is obtained from the 3D potential flow theory and considered as a hydrodynamic boundary condition. The effects of inclination of shore side on the responses of the bending moment, horizontal and vertical displacements of the pontoon and their distribution along the bridge are investigated. The results show that the displacement response increase with an increasing steepness of the shore side.

Copyright © 2018 by ASME

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