通过由CFG桩与二灰桩组合而成的长短桩复合地基处理某30层高层建筑软弱液化地基的工程实例,探讨了这一类型复合地基的承载力与沉降变形的设计计算方法,并与建筑物实测的承载力、沉降值进行了对比研究。从中可看出:这种处理方法使原地基土消除了液化,满足了上部结构对地基承载力、变形的要求,同时也验证了所提出的设计计算方法的可行性。 Through the engineering example of a 30-storey high-rise building liquefied liquefied foundation treated by long-short pile composite foundation composed of CFG pile and lime-ash pile, the design and calculation method of bearing capacity and settlement deformation of this type of composite foundation are discussed. The actual measured bearing capacity and settlement value were compared. It can be seen that this treatment method has eliminated the liquefaction of the native soil and satisfied the requirements of superstructure on bearing capacity and deformation of foundation, and also verified the feasibility of the proposed design and calculation method.