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《Chinese Journal of Underground Space and Engineering》 2012-02
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Predicting the Surface Settlement by Shield Tunneling Based on Modified BP Network

Qiao Jinli1,2,Fan Yongli 3,Liu Bo 1,2,Li Yanyan1,2,Zhang Yanping1,2(1.College of Civil Engineering,Hebei University of Technology,Tianjin 300401,China;2.Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China;3.Tianjin Sihai Concrete Day Commercial Co.Ltd.,Tianjin 301600,China)  
Prediction of surface settlements due to shield tunneling is a key to the evaluation of excavation way.Based on the introduction of the BP neural network and the surface settlements by shield tunnel construction,this paper researches the intelligent prediction of shield construction deformation,and the singular data in exercise sample are excluded.Considering all the factors,a modified BP network model on the surface settlement of shield tunnel is put forward,which is exercised via varied study step and appropriate momentum coefficient,then the model was applied to predict the surface settlement of Guangzhou Metro Line 2.The results of theoretical calculation and the actual situation are in good agreement and the error is less than 5%,so the proposed model is satisfactory.
【Fund】: 中国博士后科学基金(20100480647);; 河北省建设科技研究项目(2010-246)
【CateGory Index】: U455.43
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