Research and Prediction of Construction Deviation of Prefabricated Building Based on Grey Prediction Model
This paper uses the Grey Prediction Model GM(1,1)to analyze and predict the construction deviation of prefabricated building.It selects the planeness deviation data of prefabricated slab as the research object.Through the steps of data preprocessing,model establishment,model parameter estimation,model solution,model restoration and model verification,the comparison chart of predicted value and measured value,prediction error and posterior variance ratio and other indicators are obtained and the prediction accuracy and applicability of the model are evalu-ated.The results show that the model can reflect the change law of the planeness deviation of the prefabricated pan-els,with a posterior error ratio of less than 0.35,and the prediction accuracy of the model meets the requirements,which can be applied in prefabricated building construction.
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