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Parametric analysis of long-span steel-concrete composite box beam

ZHOU Ling-yu,HE Gui-chao (School of Civil Engineering,Central South University,Changsha 410075,China)  
Based on the experimental research of steel-concrete composite box beam,with finite element software CBAP1.0,a series of composite box beams are analyzed for the slip and shear.The results of analysis are in good agreement with those of experiments.On this basis,parametric analysis with degrees of shear connection,ratio of height to thickness of web,force ration and initial degree of non-plane,which have influence upon the mechanic performance of composite box beam,is conducted.It is shown by the result that the different degrees of shear connection,ratio of height to thickness of web and initial degree of non-plane have a great impact on the strength,stiffness and slip of composite box beam,however,force ration is less significance.
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