Abstract
The dynamic compaction method is an important method for roadbed compaction treatment. Due to its simple procedure, quick construction speed, material saving, low cost, and excellent effect, it is an extremely important procedure in the roadbed construction with gravel soil. By analyzing the structure of the embankment, structural characteristics of the gravel fill and the the engineering stress characteristics of the subgrade in the mountainous area, the macroscopic and microscopic reinforcement mechanisms of the dynamic compaction is analyzed by using three waves transfer procedure. The results show that the various waves do positive to the gravel-filled foundation in the mountainous area. However, the way of contribution is different. The analysis should be focus on the effect of dynamic consolidation, which is the result of the synergistic action of three waves. Based on the Ping-zan highway project, the details of the test and the operating process have been introduced. Also, references for roadbed dynamic compaction reinforcement construction under similar conditions have been provided.
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