粉喷桩单桩竖向抗压极限承载力预测方法

根据粉喷桩单桩静载试验所得荷载-沉降曲线对粉喷桩的极限荷载的预测方法进行了探讨,分别按照抛物线法、双曲线法和灰色理论预测方法对粉喷桩极限荷载进行了预测。结果表明:灰色理论预测值与另两种方法的预测值相比要小些,偏于安全。另外,也讨论了各种预测方法的适用性与应用条件。其方法和成果可供相同工程参考和利用。

Study on Prediction Methods of Ultimate Bearing Capacity of Cement-soil Mixed Pile

Ultimate bearing capacity of cement-soil mixed pile is predicted according to parabola method, hyperbola method and grey theory. Generally, the prediction values given by grey theory is smaller than that of other two methods. Therefore, the grey theory prediction is conservative and more secure. The application conditions of various prediction methods are also discussed.