Abstract:To get more accurate prediction results and higher prediction accuracy,combined with the advantages of grey model and time series model, a grey time series combined model is proposed to predict building settlement, which effectively overcomes the shortcomings of low precision of single model. Taking a project as example,and based on its data first mock exam data of a project, the comparison between the grey prediction model, the time series prediction model and the combined forecasting model is carried out. The results show that the settlement value predicted by the grey time series composite model is closer to the actual measurement value, and the prediction accuracy is higher than that of the single model, which is applicable to the prediction and early warning of the high-rise building settlement. The safety of the building is ensured.