Experimental and numerical study of axially-loaded RC columns and frame columns under lateral impact loading

The pendulum impact tests were carried out on one RC frame column and four free-standing columns. effect of axial compression ratio reinforcement the resistance columns compared by means dynamic time curves framed freestanding under impact. test results show that with same load, though presence loads can play a positive role (e.g., reducing residual displacement), it may lead to more severe local damage. Also, columns, be considered as protective structure for its greater lateral stiffness stronger crashworthiness. corresponding finite element models are developed，and influence cross section force responses excitation is deeply explored. significantly affect distribution moment, shear force, also damage column.