Research on High Fill Layered Milling and Ramming Based on DDA Method
For the high filling problem of foundation pit,two compaction schemes are proposed,namely,non-layer rolling and four-layer rolling.Based on the method of DDA(Discontinuous Deformation Analysis),the compaction degree of the two schemes is compared after the same number of ramming strokes from the point of view of numerical simulation,and the compaction degree of these two schemes is evaluated to determine whether the layering process can be omitted or not.The results show that:two compaction programs after the same number of tamping,there are significant differences in the degree of compaction,layered milling can effectively improve the degree of compaction,field construction should be layered milling;with the increase in the number of tamping,the degree of compaction shows a significant growth trend,strong tamping treatment of the degree of increase in the degree of compaction is greater than that of the layered milling method.
soil and gravel mixhigh fillDDAstrong tampinglayered rollingcompaction
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