非等时距GM理论反演预测软基路堤沉降

Forecast of Soft Base Embankment Subsidence by Non-equal Interval GM Theory

应用灰色理论建模原理,建立了非等时距GM(1,1)法预测路堤沉降模型,通过对无规则的数据序列做等距处理,提出了内插法和样条曲线法变换非等时距序列理论。利用Matlab7.0平台开发了路堤沉降预测系统,然后对数据进行微分拟合,再将沉降曲线进行分析对比得到逼近最优沉降发展趋势,从而对软基路堤沉降进行较精确预测。

Non-equal interval GM（ 1,1 ） model for forecasting embankment subsidence is set up by the building principle of grey theory model. A theory using intercalary value method and spline curve method to transform non-equal interval sequencing were put forward by means of making equal interval to data sequence with no rule. A soft base embankment subsidence forecasting system was developed with Matlab7.0, and differential fitting was made, and then a subsidence development tendency which draws near to the optimal tendency could be obtained by analysing and contrasting subsidence curves. Thereby, the embankment subsidence on soft soil foundation can be forecasted more exactly.