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竖向静载实验被广泛运用于桩基承载力的确定,拟合采用的数学模型对承载力的确定至关重要。在传统双曲线方法的基础上通过放宽等轴的条件,推导了更一般形式的双曲线方程,分析了采用此法拟合试桩数据的可行性,探讨了采用曲线上曲率最大点来判定极限承载力。实际工程应用验证了此法的合理性。
Vertical static load test is widely used in the determination of the bearing capacity of pile foundation. The mathematical model used in the fitting is very important for the determination of bearing capacity. Based on the traditional hyperbolic method, the more general form of hyperbolic equation is deduced by relaxing the equiaxial conditions. The feasibility of fitting test piles with this method is analyzed. The maximum of curvature on curve is used to determine the limit Carrying capacity. The practical engineering application has verified the rationality of this method.