The result shows that the dynamic modulus of sandy pebble soil reduces nonlinearly with the accretion of dynamic strain,试验结果表明，砂卵石土呈现出动弹性模量随动应变的增大而非线性地降低，动荷载频率对动弹性模量影响很小，动弹性模量随着固结比的增大而显著增大的规律。