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采用改装的击实仪对赣南地区红砂岩土进行室内击实试验,通过预埋带有编号的钢珠测试土体的空间位移,采用自制环刀取土测试不同位置土体的物理力学性质变化。试验研究表明,在冲击荷载作用下,红砂岩的粘聚力增长幅度远大于内摩擦角的增长幅度;对红砂岩土的空间击实效果,坑底土体好于坑周土体,轻锤高落好于重锤低落;研究成果对强夯地基处理等冲击荷载下土体的作用效应有比较重要的理论和实际意义。
The compacted compaction device was used to test the red sandstone soil in Gannan area. The spatial displacement of the soil was tested by embedding the steel balls with numbers. The physical and mechanical properties of the soils at different positions were tested by using the self-made ring cutter. . Experimental study shows that under the action of impact load, the growth of cohesion of red sandstone is much larger than that of internal friction angle. The compaction effect of red sandstone is better than that of pit soil and light hammer The height is better than that of the hammer; the research results have more important theoretical and practical significance on the effect of the soil under impact load such as dynamic compaction foundation treatment.