Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (2): 19-22,34.

• Mechanics • Previous Articles     Next Articles

Stress Analysis of Box Girder with Corrugate Steel Webs Under Torsion

Yang Bing-wen1  Li Ya-le1 Wan Shui1  Zhang Jian-dong2   

  1. 1.School of Transportation,Southeast University,Nanjing 210096,Jiangsu,China; 2.Jiangsu Transportation Research Institute,Nanjing 210017,Jiangsu,China
  • Received:2011-03-10 Revised:2011-10-19 Online:2012-02-25 Published:2012-01-04
  • Contact: 杨丙文(1983-) ，男，博士生，主要从事桥梁工程研究． E-mail:ybw0904@126.com
  • About author:杨丙文(1983-) ，男，博士生，主要从事桥梁工程研究．
  • Supported by:

    国家自然科学基金资助项目( 50078014)

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Abstract:

As compared with common concrete box girders,box girders with corrugated steel webs are of lower torsional rigidity and greater torsional normal stress due to their structural particularity. In order to deeply investigate the warping stress loading on the box girders with corrugated steel webs under torsion,corrugated steel webs are taken as orthotropic plates based on the theory and the mechanical characteristics of box girders,with corrugated steel webs,and a torsion differential equation of box girders with corrugated steel webs is deduced by using the second theory of Wu. Then,the constraint torsional normal stress and shear stress are calculated by employing the initial parameter method,and the results are compared with the test ones. It is found that the stress analysis in this paper is correct and more precise.

Key words: box girder, corrugated steel web, torsional stress, torsion differential equation, the second theory of Wu

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