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在车辆等动荷载作用下,粉土路基存在着液化可能性。为了得到粉土在路基工程中的动力特性,本文针对车辆动荷载条件,对不同压实度的粉土进行了动三轴试验,研究了粉土在不同压实度、围压、频率、动应力等条件下的动应变、动模量和阻尼比等动力学特性。这些试验结果为进一步分析粉土路基的动力反应特性提供了可靠的参考指标。
Under the dynamic load of vehicles, the possibility of liquefaction exists on silt subgrade. In order to obtain the dynamic characteristics of silt in roadbed engineering, the dynamic triaxial tests of silt with different compaction degrees are carried out according to the vehicle dynamic load conditions. The effects of different compaction degree, confining pressure, frequency, Stress and other conditions of dynamic strain, dynamic modulus and damping ratio and other dynamic characteristics. These test results provide a reliable reference index for further analysis of the dynamic response characteristics of silt subgrade.