This paper, adopting the Concept of divitional yield of plastic strain components, proposes a loadingcriterion of divitional yield, which is suitable for incremental numerical method.
本文采用塑性应变分量的分部屈服概念，提出了适用于增量法计算的分部屈服加载准则；
2
Suggestions are made to use the criterion to determine the load capacity of engineering piles by loading test.
并提出了利用该标准对工程桩作压载试验确定其承载力的有关建议。
3
Because hydraulic universal testing machine does not control speed of loading accurately, it does not with national criterion of testing condition.