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Proceedings Article

Galloping comparative analysis for transient main cables of suspension bridge during construction

[+] Author Affiliations
Shengli Li, Huai Chen

Zhengzhou Univ. (China)

Gang Peng

The Construction Quality Supervision Ctr. of Zhengzhou (USA)

Haiting Zhang

North China Univ. of Water Resources and Electric Power (USA)

Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 798336 (April 19, 2011); doi:10.1117/12.880021
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From Conference Volume 7983

  • Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011
  • San Diego, California, USA | March 06, 2011

abstract

The cross-sectional shapes of two construction projects for the transient main cables are non-circular cross-sections during construction of the long-span suspension bridge, so the transient main cables can experience galloping instabilities. The galloping coefficients of the several representative cases of two construction projects for the transient main cables without wind-resistant measures for the long-span suspension bridge were investigated for the first time by means of the CFD method, referring to an erecting suspension bridge. Results show that for the project 1, at the early stages of the main cables construction, the galloping instabilities can occur, but at the later stages of that, the galloping instabilities cannot occur. For the project 2, there exists a lot of wind attack angles whose galloping coefficients are less than 0 at the whole construction stages. From the perspective for galloping instability the project 1 is better 2.Through the analysis and comparison the galloping performance of two kinds of construction projects for the transient main cables, the advantage and disadvantage for two construction projects is explained theoretically from the perspective for whether can result in the galloping instability.

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Citation

Shengli Li ; Gang Peng ; Haiting Zhang and Huai Chen
"Galloping comparative analysis for transient main cables of suspension bridge during construction", Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 798336 (April 19, 2011); doi:10.1117/12.880021; http://dx.doi.org/10.1117/12.880021


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