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A Time-Domain Method for Hydroelasticity of a Curved Floating Bridge in Inhomogeneous Waves

Abstract

This paper presents a time-domain hydroelastic analysis method for bridges supported by floating pontoons in inhomogeneous wave conditions. The inhomogeneous wave effect is accounted for by adopting different wave spectra over different regions along the structure, then the time history of inhomogeneous first-order wave excitation forces on the floating pontoons can be obtained. The frequency-domain hydrodynamic coefficients are transformed into the time-domain hydroelastic model using Cummins' equations. The linear hydroelastic responses of a curved floating bridge with end supports, subjected to irregular waves with spatially varying significant wave heights and peak periods, are investigated. Moreover, sensitive analyses are performed to study the effects of the inhomogeneity on the hydroelastic responses. The primary results indicate that the inhomogeneity of the waves has a significant effect on the dynamic responses of the floating bridge.

Category

Academic article

Language

English

Author(s)

  • Wei Wei
  • Shixiao Fu
  • Torgeir Moan
  • Chunhui Song
  • Shi Deng
  • Halvor Lie

Affiliation

  • SINTEF Ocean / Energi og transport
  • Norwegian University of Science and Technology
  • Shanghai Jiao Tong University

Year

2019

Published in

Journal of Offshore Mechanics and Arctic Engineering

ISSN

0892-7219

Volume

141

Issue

1

View this publication at Norwegian Research Information Repository