CFG桩和砂石桩加固吹填河漫滩地基的试验研究

Comparative Studies of Soft Floodplain Soils Improved by CFG and Gravel Columns

文章结合河漫滩地质特点、CFG桩和砂石桩加固机理,试验研究了CFG桩和砂石桩在处理河漫滩吹填地基时桩间土承载力、单桩竖向承载力、单桩复合地基承载力,分析了两类桩的差异,研究了两类桩组合成二元复合地基的承载力,并对原设计提出了优化建议,对类似工程具有很好的借鉴价值。

Combined with the geological characteristics of soft soils in the flood plain formations,the difference in the strength mechanism of using Cement-Fly ash and Gravel（CFG） column and sand-gravel column are discussed in this paper.The comparisons are made among the bearing capacity of the soils surrounding the columns,axial capacity of the single column as well as the composite capacity of columns.The bearing capacity of the soil-column composite ground is optimized throughout this research.