According to the uniaxial dynamic experimental results of concrete

stress-strain relationship of concrete given by design code of reinforced concrete is modified taking into account the effect of strain rates of concrete.Then dynamic characteristics of reinforced concrete column are studied using the modified expression.Two situations are considered:（1） only dynamic characteristics of concrete are considered（2） dynamic characteristics of concrete and steel are considered.The result of numerical analysis shows that dynamic characteristics of concrete have little effect on the limit moment of large eccentricity column but have considerable effect on the limit moment of small eccentricity column.Nevertheless

dynamic characteristics of steel have obvious effect on limit moment and limit curvature of both large eccentricity column and small eccentricity column.At the same time

the change rule of limit moment

limit curvature and limit axial force varying with eccentric distance are also studied.