开展现场试验研究，通过现场监测等手段对CFG桩加固效果进行全面分析评价，结果表明CFG桩处理高速公路中等软基是有效的、可靠的，各项技术指标均满足设计要求，CFG桩能大幅度提高地基承载力，显著减少地基沉降，桩土应力比较大，桩身应力集中现象明显，桩体承担大部分荷载。%Field tests are made, and the reinforcing effect of CFG pile comprehensively evaluated, the results show that it is effective and reliable to treat moderate soft ground in expressway construction, and the technical indexes can meet design requirements, and the CFG pile can increase foundation bear capacity and decrease foundation subsidence greatly. The pile-soil stress ratio is relatively large, and the emphasis of stress concentration is obvious, so it is revealed that the piles undertake most of the loads.
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