叙述了堆载条件下桩的受力特性和沉降特征。根据实测资料，分析了桩侧摩阻力和端承力随上部堆载的变化关系，并由此研究了大型堆载条件下的桩土性状。对堆载试验结果的可靠性进行了论证。 The stress characteristics and settlement characteristics of piles under surcharge conditions are described. Based on the measured data, the relationship between pile side friction resistance and end bearing capacity with the upper pile load was analyzed, and the pile-soil behavior under large pile loading conditions was studied. The reliability of the surcharge test results was demonstrated.