强夯法处理湿陷性黄土地基的试验研究

Research on The Application of Dynamic Compaction Method in the Collapsible Loess Foundation Treatment

通过对比分析强夯后夯点与夯区外的现场及室内试验结果,得出单击夯沉量随夯击次数的增加逐渐减小,并逐渐趋于稳定。根据夯点下土体变形分析可得,夯击能主要消耗在土体的竖向压缩变形上,侧向挤出量不大。试验夯点相对于夯区外土体的参数有较大改善,使土体压缩,增加其承载性能,同时随着深度的增加各参数提高幅度逐渐减小,夯点与夯区外逐渐趋于相同,说明在强夯过程中夯击能量逐渐消散。实测数据具有科学价值,能为学者今后的研究提供有意义的参考。

Combining with the experimental results of the field test and the indoor experiment,the results showed that click tamping settlement decreases with the increase of number of dynamic compaction reduces gradually,and tends to be gradually stabilized.According to the analysis of the soilde for mation compaction the next point,tamping energy is mainly consumed in the compressive deformation of soil vertical,lateral extrusion amount is not too big.Test the compaction points are greatly improved compared to the parameters of compaction soil outside the district,the soil has been compressed,the bearing capacity increased,and each parameter increase gradually decreased with the increasing in depth.