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该文简要介绍了GM（1，1）模型的建模及精度检验方法。依据单桩竖向载荷试验中桩顶沉降随荷载变化的特征，建立了单桩竖向极限承载力的预测模型，并通过工程实例对单桩竖向极限承载力进行了灰色预测，取得了理想效果。
This paper briefly introduces the modeling and accuracy testing methods of the GM(1,1) model. According to the characteristics of pile top settlement change with load in the vertical load test of single pile, the prediction model of vertical ultimate bearing capacity of single pile was established. The vertical ultimate bearing capacity of single pile was forecasted by engineering example and the ideal was obtained. effect.