中文摘要：

针对非饱和重塑粉土，利用改进的可控制吸力式非饱和土静力-动力液压三轴-扭转多功能剪切仪，进行了多组固结排水非饱和土静、动三轴试验，探讨了非饱和粉土静、动强度特性，分析了粉土静三轴强度随固结压力、吸力变化的规律，以及动强度随固结骶力、吸力以及破坏振动次数变化的规律，研究表明粉土静、动强度之间具有很强的相关性。最后，通过归一化处理提出了利用粉土的静三轴强度推求相应的动力强度曲线的公式，从而达到在非饱和土地基稳定性分析中减少工作量的目的。

英文摘要：

The improved static and dynamic universal triaxial and torsional shear apparatus for unsaturated silty is employed to perform matric suction controlled cyclic triaxial tests under consolidated drained condition. Through a series of static and dynamic triaxial tests on unsaturated remoulded slity clay. The characteristics of static and dynamic strength of unsaturated silty clay are studied. The rules that static strength of silty clay changes with confining pressure and matric suction, and dynamic strength changes with confining pressure and matric suction and number of cycles are also analyzed. Moreover, it is verified that the correlation of strength between static and dynamic test of unsaturated silty clay is remarkable. Finally, some experience formulas of ascertaining dynamic strength curve according to static strength are presented by normalizating test data, so as to reduce the workload for analyzing of stability on unsaturated foundations.