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Nonlinear dynamic response of sea-crossing bridges to 3D correlated wind and wave loads

Author(s): ORCID

ORCID
Medium: journal article
Language(s): English
Published in: Advances in Structural Engineering, , n. 16, v. 25
Page(s): 3268-3283
DOI: 10.1177/13694332221129895
Abstract:

Long span sea-crossing bridges are often slender and sensitive to wind and wave loads. Nonlinear dynamic response analysis of the bridges under three-dimensional (3D) correlated wind and wave loads is performed in this study in consideration of both geometric and aerodynamic nonlinearities. An optimized C-vine copula is first used to construct a 3D joint probability distribution and environmental contour of mean wind speed, significant wave height and peak wave period. Multi-point fluctuating wind loads with Davenport coherence function and random wave loads with pile group effect are then determined using wind and wave spectra respectively. The nonlinear wind-wave-bridge system considering geometric and aerodynamic nonlinearities is solved by the Newmark-β method with the 3D correlated wind and wave parameters as an input. The proposed approach is finally applied to a real sea-crossing cable-stayed bridge with the measured wind and wave data. The results show that the nonlinear response of the bridge is higher than its linear response with the same input. The bridge response is significantly reduced if the 3D correlated wind and wave loads other than conventional uncorrelated wind and wave loads are considered.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1177/13694332221129895.
  • About this
    data sheet
  • Reference-ID
    10696530
  • Published on:
    11/12/2022
  • Last updated on:
    11/12/2022
 
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