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通过一系列动态三轴实验,研究了原状饱和辽西风积土在不同固结压力条件下的动态强度、动态弹性模量和阻尼比。结果表明,辽西风积土的破坏动态强度随着固结围压和固结应力比的增大而增大,而动态剪切强度明显区别于静态剪强度;其动态弹模量随着固结应力比和固结围压的增加而增加,而阻尼比随着固结应力比和固结围压的增大而减小。同时,分别拟合得到最大动态弹模量和最大阻尼比与有效固结应力的关系式,并且对动态弹模量和阻尼比进行了归一化处理。
Through a series of dynamic triaxial tests, the dynamic strength, dynamic elastic modulus and damping ratio of intact Liaodong westerly aeolian soil under different consolidation pressures were studied. The results show that the dynamic failure strength of aeolian soil in western Liaoning increases with the increase of consolidation confining pressure and consolidation stress ratio, while the dynamic shear strength is obviously different from that of static shear strength. The dynamic modulus of elasticity increases with consolidation The stress ratio and the consolidation confining pressure increase, while the damping ratio decreases with the increase of consolidation stress ratio and consolidation confining pressure. At the same time, the relationship between the maximum dynamic modulus, the maximum damping ratio and the effective consolidation stress were fitted respectively, and the dynamic elastic modulus and damping ratio were normalized.