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为了分析能级和夯击次数对土体有效加固深度的影响,依托西部某土石混合料高填方路堤强夯加固工程,结合强夯法在某高填方路堤回填加固中的应用,借助瑞雷波法测定夯实深度,进行了颗粒级配、颗粒密度、标准击实等土工试验,分析了填料的工程性质。结果表明:4 000,5 000和6 000 kN·m三种强夯标准处理所获得的竖向有效加固深度分别为8,9和10 m,最佳夯击次数分别为11,8和6次,土体浅层2 m以内因受夯击能量过大而振松,密实度反而降低,研究成果为优化土石混合料高填方路堤的强夯设计提供了参考依据。
In order to analyze the effect of energy level and the number of times of impacting on the effective reinforcement depth of soil mass, relying on the dynamic compaction of embankment with high embankment of a soil-stone mixture in the west and the application of dynamic compaction method in backfilling and reinforcing of a high embankment, The compaction depth was determined by the Leibo method, and the soil tests such as particle size distribution, particle density and standard compaction were carried out. The engineering properties of the packing were analyzed. The results show that the vertical effective reinforcement depths of the three kinds of standard rammers of 4 000, 5 000 and 6 000 kN · m are 8, 9 and 10 m, respectively, and the best number of ramming times is 11, 8 and 6 times , The shallow soil layer within 2 m due to the impact energy is too large and loose, but the density decreases, the research results provide a reference for optimizing the dynamic compaction design of high fill embankment.