Experimental Study on PC Beams Dynamic Performance with the Itial Effective Prestress

By the method of plane charge on the tested beams, this paper studied 6 pieces of beams, dynamic performance by 4 time loadings, displayed the deflection waveform curves, measured the bearing ability of beams with different prestress degree, analyzed the effects of the deformed performance and the ductility of the test beams with the different prestress degree. The 6 pieces of PC (prestressed concrete) beams was divided into 2 groups.