振动挤密砂桩在公路液化地基处理中的应用
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摘要
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 construction and low cost. Based on the actual project,according to the theoretical analysis,this paper has the certain representation and reference value with a view to the same area of sandy soil liquefaction processing.
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 construction and low cost. Based on the actual project,according to the theoretical analysis,this paper has the certain representation and reference value with a view to the same area of sandy soil liquefaction processing.
引文
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[2]孙克锦.砂桩加固液化土地基的工程实践[J].四川建筑,2007,27(4):94-95.
[3]张轩.砂土地基地震液化处理方法初步研究[J].西部探矿工程,2014,26(5):4-6.
[4]张春梅,冯玉芹,王英浩.砂土地震液化危害及地基处理研究[J].世界地震工程,2007,23(3):133-137.
[5]杨德生,叶真华.振动挤密砂桩消除砂土液化和提高单桩承载力[J].勘察科学技术,2003,(4):6-8.
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