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Beijing-Shanghai High-speed Railroad Subsidence Trend Analysis and Forecast Method

LIU Shengrong HUANG Wenhua YOU Zhenxing ZHANG Jie(Department of Surveying Engineering,China University of Geosciences,388 Lumo Road,Wuhan 430074,China)  
Based on the Beijing-Shanghai high-speed railway bridge pier subsidence monitor data,we find a suitable high-speed railway bridge pier fitting model with the current several common methods for deformation analysis and forecasting.Eeperimental results show that the GM(1,1) model can better improve the accuracy of settlement trends.
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