结合超长钻孔灌注单桩模型试验资料,应用有限元分析软件Ansys分析了超长钻孔灌注单桩承载性状。其中土体本构关系采用D-P模型模拟,混凝土采用双线性模型模拟,桩土界面采用接触单元模拟。分析结果表明:超长桩属摩擦型桩,存在有效桩长,分析结果与实测结果基本一致。 Combined with the model test data of the ultra-long bored single-pile, the bearing behavior of the ultra-long bored single pile is analyzed by Ansys finite element analysis software. Among them, the constitutive relation of soil is simulated by D-P model, the bilinear model is used for concrete, and the contact unit is used for simulation of pile-soil interface. The analysis results show that there is an effective pile length for the super-long-pile friction-type pile, and the analysis results are basically consistent with the measured results.