Hinged joint is the essential component of prefabricated slab bridge which transfers load from one slab to other slabs.Based on this role,many transient dynamic analyses about prefabricated slab bridge models with several extent damaged of hinged joint and different position of dynamic load are simulated by FEM method numerically.The transient acceleration amplitudes of every slab are analyzed and compared.It is suggested that the difference values of acceleration amplitude ratios of several impact tests co...