描述螺杆桩静荷载曲线的Richards模型

The Model That Can Describe the Static Loading Curves of Helical Piles

采用Richards模型对实测的新型螺杆桩的荷载—沉降曲线进行拟合,并对极限承载力进行预测,结果表明,Richards模型拟合效果比指数模型、双曲线模型要好,模拟和预测精度能够满足工程的要求,从而说明了Richards模型的合理性和可行性,可为今后螺杆桩单桩极限承载力的确定提供一定的参考。

The static loading test curves of helical piles are fitted by the Richards model and the axial bearing capacity of the test piles are estimated.The results indicate that the Richards model is better than the power index and hyperbolic models in the curve fitting.Both the curve fitting and the accuracy of the prediction can meet the requirement of the projects.The results also verified that the feasibility of applying Richards model in the static testing of helical piles.