SOIL STRESS ANALYSIS AT DIFFERENT DEPTHS AFTER AGRICULTURAL VEHICLE OPERATION

被引:0
|
作者
Guo, Jun [1 ]
Sun, Enhui [1 ]
Yang, Yue [1 ]
机构
[1] Yancheng Inst Technol, Sch Automot Engn, Yancheng 224051, Peoples R China
来源
INMATEH-AGRICULTURAL ENGINEERING | 2024年 / 73卷 / 02期
关键词
Stress-strain; Soil compaction; Porosity ratio; Consolidation coefficient; Orthogonal test; VERTICAL STRESS; COMPACTION; MODEL; PREDICTION; WHEELS;
D O I
10.35633/inmateh-73-12
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
In modern agriculture, with the development and widespread use of agricultural mechanization, mechanical compaction of soils has become a growing problem, resulting in soil degradation in the field. Based on the Boussinesq solution, the soil stress formula for the circular load area is derived, and MATLAB is used to simulate the stress-strain relationship of the soil at different depths. The results show that under the same load conditions, as the soil depth increases, the soil stress gradually decreases, with the most significant stress change occurring at 0.2 m depth. Soil compression experiments conducted using a consolidation instrument revealed that the soil void ratio dropped rapidly under loading of 50-200 kPa, and the decline slowed after 400 kPa. When the soil void ratio decreases to 0.2-0.4, the soil stress changes tend to stabilize. Comparison between the theoretical formula and the compression experimental data indicates that the soil stress gradually decreases as the thickness of the soil layer increases and the pressure load increases, verifying the linear relationship predicted by the theoretical formula.
引用
收藏
页码:139 / 148
页数:10
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