Foundation Settlement Prediction Based on a Novel NGM Model

Prediction of foundation or subgrade settlement is very important during engineering construction. According to the fact that there are lots of settlement-time sequences with a nonhomogeneous index trend, a novel grey forecasting model called NGM model is proposed in this paper. With an optimized whitenization differential equation, the proposed NGM model has the property of white exponential law coincidence and can predict a pure nonhomogeneous index sequence precisely. We used two case studies to verify the predictive effect of NGM model for settlement prediction. The results show that this model can achieve excellent prediction accuracy; thus, the model is quite suitable for simulation and prediction of approximate nonhomogeneous index sequence and has excellent application value in settlement prediction.

[1]  Ruan You-xing.  A multivariable grey model based on background value optimization and its application to subgrade settlement prediction , 2013 .

[2]  Kyoung Kwan Ahn,et al.  An accurate signal estimator using a novel smart adaptive grey model SAGM(1, 1) , 2012, Expert Syst. Appl..

[3]  Yong Wei,et al.  Optimization of Grey Derivative in GM (1, 1) Based on the Discrete Exponential Sequence , 2009 .

[4]  Liu Si-feng,et al.  An optimal GM(1,1) based on the discrete function with exponential law , 2008 .

[5]  Wang Li-zhong.  MODIFIED GREY SYSTEM FORECASTING MODEL AND ITS APPLICATION FOR ANALYZING INFORMATION OF LANDSLIDE MONITORY , 2005 .

[6]  Li Yi.  APPLICATION OF A MULTI-POINT GREY MODEL TO DEFORMATION PREDICTIN OF SUPPORTING STRUCTURE FOR DEEP PIT , 2007 .

[7]  Jie Cui,et al.  A novel grey forecasting model and its optimization , 2013 .

[8]  Chaoqing Yuan,et al.  On novel grey forecasting model based on non-homogeneous index sequence , 2013 .

[9]  Han Bing Liu,et al.  Settlement Prediction of Roadbed Based on Mixture Model with Exponential Curve and ANN , 2013 .

[10]  Liu Si-feng,et al.  Novel grey forecasting model and its modeling mechanism , 2009 .

[11]  Si-feng Liu,et al.  Optimization of Background Value in GM(1,1) Model , 2008 .

[12]  Naiming Xie,et al.  On the properties of small sample of GM(1,1) model , 2009 .

[13]  Akira Asaoka,et al.  OBSERVATIONAL PROCEDURE OF SETTLEMENT PREDICTION , 1978 .

[14]  Hu Chun-qing.  Combined prediction of settlement of composite foundation with crushed-gravel piles , 2010 .

[15]  Huiming Tang,et al.  Time Series Prediction of Chimney Foundation Settlement by Neural Networks , 2011 .

[16]  Yong Wei,et al.  Optimized Grey Derivative of GM (1, 1) , 2009 .

[17]  He Xiu-feng.  Weighted multi-point grey model and its application to high rock slope deformation forecast , 2007 .