中文摘要：

基于实际地震记录的统计分析,研究地震动的波序统计特征。实验研究表明,地震动的波序特征对土体变形发展有显著影响,其应变发展时程及残余变形主要受峰值及峰值前脉冲控制。通过真实地震动的统计分析研究其波序特征,结果表明：峰值前后脉冲个数的对数与截断比呈线性递减关系,与震级呈线性递增关系。当截断比小于0.5时,峰值后脉冲个数大于峰值前脉冲个数,二者之比的范围为3.1-1.2,当截断比大于0.5时,峰值后与峰值前脉冲个数差别变小,二者之比为1.2-1.0。

英文摘要：

The characteristics of ground motion wave sequences based on statistical analysis of earthquake records are investigated. Experiments show that the characteristics of ground motion wave sequences have a significant impact on soil deformation. Its strain development time history and residual deformation are controlled by the peak value and before-peak value pulses. Wave sequences characteristics are studied through statistical analysis of real ground motion experiments. The results show that logarithm of the number of before and after peak value pulses decreases linearly with the increasing of cut-off ratio,and increases linearly with the increasing of magnitude. When cut-off ratio is less than 0. 5,the number of after-peak value pulses is greater than that of before-peak pulses,with the ratio of 3. 1 - 1. 2; When cut-off ratio is more than 0. 5,difference between the numbers of before and after peak values pulses reduces,with the ratio of 1. 2 - 1. 0.