云南山区软土有其不同于一般海相、湖相软土的特点。针对依托工程楚南一级公路的软基处理工程,以现场实测数据为依据,建立有效的有限元数值模型。在此基础上,对可能采用的换填法、堆载预压法、碎石桩法、水泥搅拌桩法、旋喷桩法、CFG桩法地基处理进行数值分析,对比各种地基处理方案中路堤的变形规律、分级堆填稳定性、施工历程中沉降量变化,对这些地基处理方法在具体工程中的适用性进行探讨,为以后云南山区软土地基处理工程中地基处理方案的选择提供了参考。 Yunnan mountainous area has its soft soil different from the general marine, lacustrine soft soil characteristics. According to the soft foundation treatment project of the Chu-Nan Class I Highway, based on the field measured data, an effective finite element numerical model is established. On the basis of this, numerical analysis is made on the possible replacement methods, surcharge preloading method, gravel pile method, cement mixing pile method, jet grouting pile method and CFG pile foundation treatment method to compare various foundation treatment schemes The law of embankment deformation, the stability of graded packing and the variation of settlement during the construction process, the applicability of these foundation treatment methods in specific engineering is discussed, which provides the basis for future selection of foundation treatment program in the treatment of soft soil foundation in Yunnan mountainous area reference.