本项研究利用土壤动态三轴仪对表层沙的强度特性进行了试验分析,测出其应力应变关系和强度参数φ、c,并分析了颗粒级配、含水量、密度和动态载荷对强度特性的影响,建立了浅层沙的Duncan-Chang应力应变模型,为车辆行走机构与沙相互作用的力学计算分析提供了重要的资料。 In this study, the soil dynamic triaxial apparatus was used to test the strength characteristics of surface sand, and the stress-strain relationship and strength parameters φ and c were measured. The effect of particle size distribution, water content, density and dynamic load on the strength characteristics The Duncan-Chang stress-strain model of shallow sand was established, which provided important information for the mechanical calculation and analysis of the interaction between the vehicle’s running gear and sand.