| Recently, with the rapid economic development of China, due to the excellent mechanical properties and the characteristics of easy construction, pressure-type steel-concrete composite floor slab has been more widely used in China. Rely on the stress transfer at the interface of two materials, Pressure-type steel-concrete composite floor slab can Work together. Under load pressure, plate-concrete slabs occur various failure modes, along the steel sheeting and concrete combined with the vertical shear surface occurs bond Failure which is the most major failure mode as the main of the research is of great significance.Articles realities, directed towards the three types of galvanized steel sheeting provide by BlueScope Steel Shanghai Co. Ltd. Think on the shear span,composite slab height, steel plate thickness and other factors,27 Sheet-Concrete full-scale composite slab specimens were designed and tested. Study the two kinds of open type (2W and 3W-type) and reentrant galvanized steel sheeting's performance and vertical shear force-bond failure modes-simply supported concrete floor in a state plus two contained. Described the three types of failure process of composite floor, crack distribution and bond slip behavior,more in-depth analysis have been done of the influence of pressure plate and slip properties of the main factors. In the research results have been proposed based on a pressure plate-concrete composite floor method of calculating shear bond capacity.Based on this test results, Longitudinal Shear bond coefficient of three types of composite slab were obtained by linear regression analysis, which can provide the basis for these three types of pressure-type steel-concrete composite floor bearing capacity.
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