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近年来,微型CFG桩复合地基作为一种地基加固处理方法,在工程中得到了广泛的运用。桂林地区地质复杂-溶沟发育且埋深较大,常存在软弱夹层地层,而微型CFG桩施工长度一般在3~5m左右,仅采用微型CFG桩有时又无法满足设计要求,需结合其他处理方法。结合工程实例,提出了微型CFG桩和水泥压力注浆共同处理的方法,并对其承载和变形特性进行分析,得到了一些结论,供施工参考。
In recent years, micro-CFG pile composite foundation as a ground reinforcement method, has been widely used in engineering. In Guilin, the geology is complicated with the development of deep ditch and deep buried depth, often with weak interbedded strata. However, the construction length of miniature CFG piles is generally around 3 ~ 5m. The miniature CFG piles sometimes can not meet the design requirements and need to be combined with other treatment methods . Combined with engineering examples, a method of co-processing with micro-CFG pile and cement pressure grouting is put forward, and its bearing and deformation characteristics are analyzed. Some conclusions are obtained for construction reference.