素土挤密桩处理湿陷性黄土地基效果检验

Effect Inspecting for the Treatment of Collapsible-loess Subgrade by Using Element Earth Piles

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。

Based on engineering practice, the compacting factor of element earth piles and the coefficient of compaction between the earth piles are obtained from laboratory test by using soil. samples from the soil in piles and the soil between piles taken at different depth in field drills, and the compressibility and the collapsibility of the soil between piles are obtained in the same way. The obvious effect in eliminating the collapsibility of loess, reducing the compressibility and meliorating the mechanical properties by using element earth piles could be validated from different laboratory tests, and the notable action in improving the beating capacity of the composite subgrade and the soil between piles could also be validated.