Table 1.
The basic physical properties of the tested soil.
Table 2.
The compaction parameters under different compaction energies.
Fig 1.
System connection diagram.
Table 3.
The number of stress tests n1 in each layer.
Fig 2.
Two types of soil layers compaction curve under different compaction energies (E = 1208.2 kJ/m3, 2013.7 kJ/m3, 2684.9 kJ/m3).
Table 4.
The compaction test results under different compaction energies and layers.
Table 5.
Optimum water content and maximum dry density under different compaction energies and soil layers.
Fig 3.
Variation curve of soil bottom pressure with the number of hammer strokes.
Fig 4.
The soil bottom pressure of different compaction energies in the three-layer compacted soil sample (E = 1208.2 kJ/m3, 2013.7 kJ/m3, 2684.9 kJ/m3).
Fig 5.
The soil bottom pressure of different compaction energies in the five-layer compacted soil sample (E = 1208.2 kJ/m3, 2013.7 kJ/m3, 2684.9 kJ/m3).
Table 6.
The σ, σz and σ/σz values of each layer of soil in the three-layer soil sample.
Table 7.
The σ, σz and σ/σz values of each layer of soil in the five-layer soil sample.
Fig 6.
The soil bottom energy consumption ratio (σ/σz) under different compaction energies (E = 1208.2 kJ/m3, 2013.7 kJ/m3, 2684.9 kJ/m3, w = wop).
Fig 7.
The soil bottom energy consumption ratio (σ/σz) under different soil layers.
Table 8.
The fitting results of each condition.