Research on a simplified reinforced concrete frame column model subjected to lateral impact load

A primary standard model and four simplified models were presented with ANSYS for a reinforced concrete frame structure.The structural response was calculated for the dynamic loads applied at 3/4,1/2 and 1/4 column height,respectively.The results showed that it is reasonable to reduce the entire frame to a frame of 2 storey by 2 spans or a cross frame when carrying out numerical analysis for a single column.It is also a practical approximation to reduce the frame to a 2 end-fixed column in experiment.But it should be noted that the reduction might result a certain amount of difference unless the impact load acts at mid-span of the column length.