Calculation and Analysis of the Deflections of U-Section Steel-Encased Concrete Composite Beams
U-section steel-encased concrete composite beams is the new type composite beam.This kind of composite beam takes thick steel plate as bottom plate and thinner cold-formed thin-walled steel as web which are connected through a u-shaped section by welding, and then concrete are poured in the u-shaped. In this paper an experimental study was conducted on six full size simple supported U-section steel-encased concrete composite beams.The relationships of the load-deflection curves of the composite beams were obtained. From the experimental results,the variation laws of deflection are analysed,and three defletion formulas are analysed and compared. Based on actual code. A theoretical formula is proposed for defletion. The results of theoretical formula are proved to be in good agreement with the experimental results.
X. J. Zhou et al., "Calculation and Analysis of the Deflections of U-Section Steel-Encased Concrete Composite Beams", Advanced Materials Research, Vols. 163-167, pp. 846-853, 2011