剪切波速预测黄土场地震陷量的方法

PREDICTION METHOD OF SEISMIC SUBSIDENCE OF LOESS GROUND WITH SHEAR WAVE VELOCITY

根据黄土动力学试验及原位波速测试资料,给出了兰州地区黄土剪切波速和震陷性的统计关系,提出了利用土层剪切波速预测黄土场地上震陷量的方法,并对黄土场地在不同地震强度下的震陷量和永登地震黄土震陷进行了实例计算,结果表明,经含水量归一化处理后黄土的震陷量与其剪切波速及试验动应力之间的关系极为密切,可用于黄土场地上的震陷预测计算。

Based on dynamic test and wave velocity data of loess,the statistic relationship between shear wave velocity and seismic subsidence of loess is established. The prediction method of seismic subsidence of loess ground is proposed. The calculation result of seismic subsidence of loess ground under different seismic intensities,especially that of reversed value from Yongdeng earthquake shows that the value of seismic subsidence with normalized water content has a close relationship with shear velocity and dynamic stress,and the relationship can be used to assess the seismic subsidence of loess ground.