Approximate Deflection Calculation of Variable Box Section Girder Considering the Effect of Shear Lag and Shear Deformation

Li Xia Lin; Yuan Hai Zhang; Ya Ping Wu; Nan Hong Ding

doi:10.4028/www.scientific.net/AMR.255-260.967

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 255-260Approximate Deflection Calculation of Variable Box...

Approximate Deflection Calculation of Variable Box Section Girder Considering the Effect of Shear Lag and Shear Deformation

Abstract:

Based on the equivalent stiffness and equivalent stiffness ratio method, an approximate method suitable for hand calculation is proposed to calculate the deflection of variable box section girder bearing load, in which, the double effects of shear lag and shear deformation can be taken into account. It shows that the deflection calculated by elementary beam theory without considering shear lag effect and the shear deformation is smaller, comparing to results calculated by the approximate method proposed in the paper. For such variable box sections girder, transverse shear deformation effect is greater than the shear lag effect when calculating the deflection. The approximate method offers a simple and effective calculating method for the design of box girder with variable cross section, in which, analysis formula can be applied in engineering practice through simple revision.

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Periodical:

Advanced Materials Research (Volumes 255-260)

Pages:

967-971

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.255-260.967

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Online since:

May 2011

Authors:

Li Xia Lin, Yuan Hai Zhang, Ya Ping Wu, Nan Hong Ding

Keywords:

Box Girder with Variable Section, Deflection, Shear Deformation, Shear Lag

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