单桩抗拔极限承载力灰色预测模型

Grey prediction model for Uplift Ultimate Bearing Capacity of single pile

分析原有单桩竖向抗拔极限承载力灰色预测模型背景值构造的不足,根据拉格朗日中值定理提出了加权背景值形式,利用具有全局寻优能力的模式搜索法求解背景值形式中的权值。最后工程实例应用结果显示改进的单桩竖向抗拔极限承载力灰色预测模型提高了预测精度,具有更好的工程应用价值。

the deficiency of the background value of the original single pile vertical uplift ultimate bearing capacity grey prediction model is analyzed.The weighted background value form is put forward according to the Lagrange mean value theorem,and the weight value in the background value form is solved by the pattern search method with the global optimization ability.Finally,the application results of the project show that the improved grey prediction model of the vertical uplift ultimate bearing capacity of single pile improves the prediction accuracy and has better engineering application value.