针对出现陡降段的单桩竖向抗压静荷载试验 Q—s 曲线因加载分级原因导致该试验所得到的单桩竖向极限承载力值比实际值小的问题，提出了以二分法求解完整指数函数模型拟合单桩静荷载试验 Q—s 曲线的方法，根据现场试验所得数据，对完整指数函数模型的拟合结果进行了比较，提出了根据完整指数函数的最大曲率点，计算出了单桩极限承载力的理论值。%This paper has proposed a solution which is solving complete exponential function by the method of dichotomy to fitting the Q—s curve of compressive pile static load test for the question that the vertical ultimate bearing capacity we gained in compressive pile static load test is smal-ler the real in the situation of appearing plunged segment in the Q—s curve of compressive pile static load test which because of load rating. This article have compared the fitting result of complete exponential model with the resulting test data. Finally,this paper,based on the maximum cur-vature point of complete exponential function to calculate the ultimate bearing capacity of the theoretical value.
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