振动挤密砂桩在公路液化地基处理中的应用

Application of vibration and compaction sand pile in treatment of highway liquefied foundation

以泉州地区某新建公路为例,针对沿线砂土液化的振动挤密砂桩的处理方法,通过处理后桩间土的标准贯入试验、桩身重型圆锥动力触探试验,结合理论分析,探讨了挤密砂桩对该公路液化地基的处理效果。分析结果显示,挤密砂桩对该公路的液化地基的处理效果良好,同时施工简洁,成本低廉。本文以实际工程为依托,结合理论分析,具有一定代表性,以期能为相同地区的液化地基处理提供一定的参考和借鉴价值。

Taking a highway in Quanzhou as an example, in view of the foundation treatment method of vibration and compaction piles along the highway, through analyzing the results of the standard penetration test of soil between piles after the treatment and heavy cone dynamic penetration test in the piles, this paper discusses the sand compaction pile treatment effect of the liquefied soil combining the theoretical analysis. The analysis results show that, the treatment effect of sand compaction piles of soil liquefaction on the freeway is good, and it has the advantage of simple construc- tion and low cost. Based on the actual project, according to the theoretical analysis, this paper has the certain repre- sentation and reference value with a view to the same area of sandy soil liquefaction processing.