Based on the rapid impact compaction technique, the dynamic compaction process of gravel soil ground was simulated using the particle flow discrete element code PFC2D/PFC3D. The improvement effect and the influence depth of the dynamic compaction of the gravel soil foundation were analyzed based on the porosity variation of the foundation soil during the dynamic compaction process. The influences of the dynamic hysteretic effect, the values of the parameters for the contact model and the shape of the hammer on the computation results of the numerical analyses were analyzed. The feasibility of the numerical simulation for the dynamic compaction process of the gravel soil foundation was discussed. The computation results obtained by the particle flow discrete element method shows that the porosity variation induced by the particle spin must be considered in the numerical analysis of the dynamic compaction of gravel soil ground. The particle flow discrete element method is effective and reasonable in the numerical analysis of the dynamic compaction of gravel soil ground.
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The research described in this paper was funded by the National Nature Science Foundation of China (Nos. 41172276, 51279155) and the scientific research foundation for the advanced talents (No. 118-211307). The data in this paper have not been presented anywhere.
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Ma, ZY., Dang, FN. & Liao, HJ. Numerical study of the dynamic compaction of gravel soil ground using the discrete element method. Granular Matter 16, 881–889 (2014). https://doi.org/10.1007/s10035-014-0529-x
- Gravel soil foundation
- Dynamic compaction
- Particle flow discrete element