土挤密桩法消除黄土湿陷性的试验分析

土挤密桩法是利用沉管、冲击或爆扩等方法在地基中挤土成孔,然后向孔内夯填素土（一般为粘性土）成桩,通过成孔过程中的侧向挤压作用,桩孔内的土被挤向周围,使得桩间土得以挤密,消除黄土的湿陷性。用理论计算的方法分析土挤密桩的主要设计参数（孔间距）,通过试验施工进行验证,选择合理的设计参数。研究结果对黄土地区的地基处理具有重要的指导作用。

Test Analysis of Soil Compaction Pile Method to Eliminate Loess Collapsibility

Soil compaction pile method is using the immersed tube or shock or explosive with expanding to make holes in foundation.And then to fill the hole with Grain soil into pile,through the effect processed on the lateral extrusion in the hole making,its soil in hole was crowed into the surrounding,making the soil between piles to compaction and eliminating loess collapsibility.This paper analyzes the main design parameters（hole spacing） during the soil compaction pile method by theoretical calculation method,which was verified through the test construction,and chooses the reasonable design parameters.The conclusions have important guiding role for the foundation treatment of loess areas.