超高层建筑CFG桩复合地基承载力精准预测研究

Accurate Prediction of Bearing Capacity of CFG Pile Composite Foundation for Super High Rise Building

由于目前方法预测超高层建筑CFG桩复合地基承载力时,在不同褥垫层厚度、桩体长度、荷载情况下无法准确地预测沉降量和桩土应力比,导致预测结果的相对误差较大。因此,提出超高层建筑CFG桩复合地基承载力精准预测研究方法。在总结CFG桩复合地基承载力影响因素的基础上,了解因素之间存在的密切关联性,按照输入以及输出的数据,得到LS-SVM预测模型,利用LS-SVM预测模型实现超高层建筑CFG桩复合地基承载力精准预测研究。实验结果表明,所提方法在不同褥垫层厚度、桩体长度、荷载情况下能够实现准确预测,所得到的最终预测结果的相对误差较小。

Because the current method predicts the bearing capacity of super high-rise building CFG pile composite foundation,the settlement and the pile-soil stress ratio cannot be accurately predicted under different cushion thickness,pile length,and load,which leads to relatively large errors in the prediction results.Therefore,a research method for accurately predicting the bearing capacity of CFG pile composite foundation for super high-rise buildings is proposed.On the basis of summarizing the influencing factors of the bearing capacity of CFG pile composite foundation,understand the close correlation between the factors,according to the input and output data,obtain the LS-SVM prediction model,and use the LS-SVM prediction model to realize the super high-rise building CFG pile Research on accurate prediction of bearing capacity of composite foundation.Experimental results show that the proposed method can accurately predict in advance under different cushion thickness,pile length,and load conditions,and the relative error of the final prediction results obtained is small.