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散粒体的宏观力学行为是由其细观组构所决定的，基于此，本文对影响铁路碎石道床力学特性的几种主要细观组构进行了较为详尽的统计描述，在碎石道床的离散介质理论分析方面进行了探讨。
The macroscopic mechanical behavior of the granular material is determined by its meso-structure. Based on this, several major mesostructures that affect the mechanical properties of the railway gravel bed have been described in detail. In the gravel bed The discrete medium theory analysis is discussed.