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Cement Fly-Ash Gravel Pile(CFG)桩可较大幅度地提高天然地基的承载力,降低建筑物的基础沉降,并且具有施工方法简单易行、适用地层范围广泛、施工周期短、造价低和污染小等优点,近年来,在北京地区得到了广泛的应用。分析了CFG桩提高地基承载力的机理,举例介绍了CFG桩复合地基在北京地区的应用情况,指出施工中应注意的问题,期望着CFG桩复合地基技术能更趋成熟,在北京地区能得到更广泛深入的应用。
Cement Fly-Ash Gravel Pile (CFG) pile can greatly improve the bearing capacity of natural foundation and reduce the foundation settlement of the building, and has the advantages of simple construction method, wide range of applicable strata, short construction period, low cost and pollution Small advantages, in recent years, has been widely used in Beijing. The mechanism of CFG pile to improve bearing capacity of foundation is analyzed. The application of CFG pile composite foundation in Beijing area is introduced. The problems needing attention in construction are pointed out. It is expected that CFG pile composite foundation technology can be more mature and can be obtained in Beijing. More extensive and in-depth application.