中文摘要：

为研究冻土单轴加载下的冲击动态力学性质，采用分离式霍普金森压杆（SHPB）在-28--3℃不同负温下对人工冻土进行了应变率范围800-1500s^-1的冲击实验。获得了人工冻土在不同温度与不同应变率下的应力应变关系，发现人工冻土具有显著的应变率效应和温度效应，即冻土动强度随应变率增大和温度的降低而增大。单轴高应变率加载下，冻土没有明显的屈服现象，加载后试样完全破坏。

英文摘要：

A split Hopkinson pressure bar （SHPB） is employed to investigate the dynamics character of artificial frozen soil under uniaxial dynamic compression test at the temperature from -28 ℃ to -3 ~C and strain rates from 800 to 1 500 s^-1 The stress-strain curves at various strain rates and temperature were obtained. The compressive strength of frozen soil shows positive strain-rate and negative temperature sensitivity over the range of strain rates and temperature employed. The frozen soil didn＇t yield during the SHPB tests. The specimens were catastrophically damaged after the uniaxial SHPB tests.