| As one kind of composite slab, the cold-formed steel deck and lightweight aggregate concrete composite slabs have advantages of high rigidity and ductility. It also make full use of the material character that steel is good at tension and concrete is good at compression. Compared with the concrete composite slabs, the lightweight aggregate concrete(LWAC) composite slabs have lighter self-weight,better anti-seismic capability and it can make higher economic returns. Based on a general review on the achievement of the cold-formed steel deck concrete composite slabs and lightweight aggregate concrete by foreign and Chinese researchers , the designs of experiment are presented. According to static loading experiments of simple supported composite slabs only with transversal shear steel-bar, the slippage performance of composite slabs is studied. Seven pieces of full-scale simple support specimens were designed with 2W cold-formed steel deck made by BHP. The deflection, strains and slippage are recorded and analyzed with two points symmetry loading. We also deduced the formula of shear-bond bearing capacity and the formula of slippage between steel and concrete. The influence factors-the shear span, steel deck thickness, space and pattern of transversal shear steel-bar, out-to-out depth are considered in the process of test. Moreover, P-s curves are analyzed according to the results of push-out test. The result by the formula of shear-bond bearing capacity deduced from test are verified good agreement with the test results and the formula can be referred by engineers. According to comparison between theoretical results and test results, the influence of the pattern of transversal shear steel-bar is analyzed. Finally, the author put forward the conclusions and the suggestions.
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