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考虑土体动力滞回特性、颗粒的接触刚度及夯锤底面形状三种因素,使用颗粒流离散元数值计算方法分析了碎石土地基的动力夯实效果。分析了地基动力夯实数值模拟过程中上述三种因素对碎石土地基夯实效果产生的影响。探讨了以土体孔隙率变化为衡量标准的碎石土地基动力夯实数值模拟的可行性。
Considering the characteristics of dynamic hysteresis of soil, the contact stiffness of particles and the shape of bottom surface of rammer, dynamic compaction of gravel soil is analyzed by using numerical method of particle flow discrete element method. The influence of the above three factors on the compaction effect of gravel soil foundation during the numerical simulation of foundation dynamic compaction is analyzed. The feasibility of dynamic compaction numerical simulation of gravelly soil is discussed based on the change of soil porosity.