摘要
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 paper, the strength characteristics of sand layer near the ground sarface was studied by soil dynamic triaxial test equipment. The strength parameters c, φ of the sand were tested and the effect of grain size, moisture content, bulk density as well as dynamic load on the strength characteristics of the sand were analysed. And the Duncan-Chang model of sand layer near the ground surface was measured, these results were important foundation to calculate and analyse the mechanics of vehicle-sand interaction.
基金
自然科学基金项目"沙地-车辆系统动态特性与提高通过性研究"的一部分
