• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
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  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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  • Chinese Science Citation Database
Volume 26 Issue 2
Apr.  2013
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Article Contents
WANG Qi, LIAO Haili, LI Mingshui, MA Cunming. Empirical Mathematical Model for Nonlinear Motion-Induced Aerodynamic Force of Bridge Girder[J]. Journal of Southwest Jiaotong University, 2013, 26(2): 271-277. doi: 10.3969/j.issn.0258-2724.2013.02.013
Citation: WANG Qi, LIAO Haili, LI Mingshui, MA Cunming. Empirical Mathematical Model for Nonlinear Motion-Induced Aerodynamic Force of Bridge Girder[J]. Journal of Southwest Jiaotong University, 2013, 26(2): 271-277. doi: 10.3969/j.issn.0258-2724.2013.02.013

Empirical Mathematical Model for Nonlinear Motion-Induced Aerodynamic Force of Bridge Girder

doi: 10.3969/j.issn.0258-2724.2013.02.013
  • Received Date: 24 Oct 2011
  • Publish Date: 25 Apr 2013
  • In order to probe into the nonlinear motion-induced aerodynamic force (MIAF) of bridge girder, based on Taylor expansion of the equilibrium position, a nonlinear MIAF mathematical model for bridge girder under harmonic motions was established, and the plural and real expressions were deduced. The identification method of nonlinear aerodynamic parameters in the expressions was introduced. This mathematical model includes the properties of nonlinear MIAF composing of multiple harmonic components, and can be applied to the analysis of nonlinear aerodynamic stability of bridges. An application shows that the maximal error between the wind tunnel test results of a streamline box girder and fitting ones based on the model is less than 3%to verify the validity of the mathematical model.

     

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