Analytic Solution and Experimental Study on Shear Lag Effect of Steel-Concrete Composite Beams With Wide Flanges

HU Shao-wei; YU Jiang; XIE Jian-feng

doi:10.3879/j.issn.1000-0887.2014.04.009

Volume 35 Issue 4

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Article Navigation > Applied Mathematics and Mechanics > 2014 > 35(4): 432-443

HU Shao-wei, YU Jiang, XIE Jian-feng. Analytic Solution and Experimental Study on Shear Lag Effect of Steel-Concrete Composite Beams With Wide Flanges[J]. Applied Mathematics and Mechanics, 2014, 35(4): 432-443. doi: 10.3879/j.issn.1000-0887.2014.04.009

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Analytic Solution and Experimental Study on Shear Lag Effect of Steel-Concrete Composite Beams With Wide Flanges

doi: 10.3879/j.issn.1000-0887.2014.04.009

¹Nanjing Hydraulic Research Institute, Nanjing 210024, P.R.China;²College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, P.R.China

Funds: The National Science Fund for Distinguished Young Scholars of China（51325904）;The National Natural Science Foundation of China（51279111）

Received Date: 2013-10-12
Rev Recd Date: 2013-11-30
Publish Date: 2014-04-15

Abstract

Abstract

The sheer lag effect of the steel-concrete composite beam leads to nonuniform distribution of longitudinal stress along the width of flange, thus probably producing disadvantageous transverse cracks. And so, it is necessary to further study the mechanism of shear lag effect of the steel-concrete composite beams with wide flanges, in order to prevent those cracks. The cross-section normal stress differential equation was established for the thin-walled double-room box composite beams, based on the combination of flange micro-unit deformation compatibility condition and equilibrium differential equation; and the analytic stress solution was obtained with the simple-support boundary condition at both ends of the composite beam considered. Finally, the analytic solution was compared with the results of model tests, to prove the accuracy and applicability of the presented method.
- composite beam,
- sheer lag effect,
- analytic method,
- experimental validation

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References(24)

References

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