通过材料实验，对大掺量Ⅲａ级粉煤灰素混凝土构成的ＣＦＧ桩桩身材料进行力学性能方面的试验研究，主要探讨抗压强度与材料配比、龄期之间的关系。实验结果表明，大掺量Ⅲａ级粉煤灰素混凝土作为桩身材料，在突破传统限制粉煤灰取代水泥率的条件下，仍可达到设计要求的抗压强度。 Through material experiments, the mechanical properties of CFG piles made of large amount of Class IIIa fly ash concrete were studied in terms of mechanical properties, and the relationship between compressive strength, material ratio and age was mainly discussed. The experimental results show that the large amount of Grade IIIa fly ash concrete as the pile material can reach the compressive strength required by the design under the condition of breaking the traditional limit of the fly ash to replace the cement rate.