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本文主要从工程实践出发,对素土桩桩体压实系数及桩间土挤密系数,通过现场钻孔实际采取不同深度的桩体土和桩间土形心试样,由室内试验来求取;对于桩间土的压缩性及桩间土的湿陷性也同样取桩间孔不同深度形心土样,由室内试验来求取。并通过各种试验及检测方法来验证素土挤密桩在消除黄土湿陷性,降低压缩性,改善土的物理力学性质所取得的明显效果,以及对提高复合地基承载力及桩间土承载力所具有的显著作用。
In this paper, starting from the engineering practice, the compaction coefficient of the plain soil piles and the soil compaction coefficient of the piles are taken from the laboratory tests by actually taking soil samples of piles and piles with different depths through on-site drilling. Take the compressibility of the soil between the piles and piles of soil collapsible also take different depth between the pits center-soil samples taken from the laboratory test. And through various tests and testing methods to verify the obvious effect of the plain soil compaction pile in eliminating loess collapsibility, reducing the compressibility and improving the physical and mechanical properties of the soil, as well as to improve the bearing capacity of the composite foundation and soil bearing capacity Force has a significant role.