Abstract：The roadbed settlement, which is influenced by many complicated factors, is a dynamic and dependent process. During the filling construction of the roadbed, the total settlement value could be predicted by using time series equal in- terval prediction model of recent information. With the addition of new deformation datum, the model parameters are continuously modified. The practical settlement prediction of the abutment embankment has showed that the error between measure and one-step prediction value is mostly below 5mm, of 2.3mm average error absolute value. The more prediction step is, the more error is.
2004, Vol. 21 
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