调整双曲线法在支盘桩极限承载力预估中的应用

Application of Adjusted hyperbolic Method in Predicting Ultimate Bearing Capacity of Single Squeezed Branch Pile

为探讨调整双曲线法用于支盘桩试桩极限承载力预估的适应性,将该方法应用于实际工程的两根试桩实测Q-S曲线拟合计算中。结果表明,调整双曲线法具有比双曲线法、二次趋势法等曲线拟合预估法具有更好的灵活性和适应性及更高的预测精度,其计算结果与实测数据较为吻合且偏于安全。该预估法可供工程选用参考。

In order to evaluate the adaptation of adjusted hyperbolic method in predicting the ultimate bearing capacity of squeezed branch pile, the curve-fitting calculation of measured Q-S curve of two test piles which is from practical engineering was gi,~en. The results show that, compared with the hyperbolic method and the quadratic trend method, the adjusted hyperbolic method has better flexibility and adaptability, and has higher prediction accuracy, its calculation results are more consistent with the measured data and are somewhat safe. The adjusted hyperbolic method may be adopted in engineering practice for reference.