讨论了一种地基处理新方法 :采用后灌浆法和深层搅拌法联合处理软土地基 .通过静载荷试验得到了复合地基承载力 ,同时通过埋设压力盒和应力计得到了桩土应力比 .本文采用了Mindlin解和Boussinesq解联合求解复合地基中及复合地基下卧层土中应力 ,从而求得复合地基沉降 ,通过实测数据与计算沉降量的对比 ,Mindlin解和Boussinesq解联合求解法与实测能较好吻合 A new method of foundation treatment is discussed: the post-grouting method and the deep mixing method are used to deal with the soft ground, the bearing capacity of the composite foundation is obtained by the static load test, and the pile-soil stress ratio is obtained by embedding the pressure box and stress meter. The Mindlin solution and the Boussinesq solution are used to solve the stress in the subsoil of the composite foundation and composite foundation so as to obtain the composite foundation settlement. By comparing the measured data with the calculated settlement, Better fit