加权GM(1.1)模型在地铁沉降监测中的应用

Application of Weighted GM( 1. 1) Model in the Subsidence Monitoring of Metro

GM(1,1)模型中的新数据的重要性远远大于那些陈旧的数据,然而,传统的GM(1,1)模型数据的累加并没有体现出新数据的重要性。通过对广州地铁五号线沉降监测数据进行处理,分别建立传统的GM(1,1)模型和加权GM(1,1)模型,对两种模型进行分析与预报,比较的结果验证了加权GM(1,1)模型在地铁沉降变形分析中的有效性、实用性和正确性。

The new data in the model of GM （ 1,1 ） are much greater than those of the old data, however, The traditional data cumu- lative model of GM （ 1,1 ） do not reflect the importance of new data. Through the main subsidence monitoring data processing of Guan- gzhou Metro Five Line, It has respectively applied for the traditional GM （ 1.1 ） model and the weighted GM （ 1.1 ） model , Which have carried on the analysis and the forecast to two kind of models. The result verifies the weighted GM（ 1.1 ） model in metro in the settlement of effectiveness, practicality and accuracy.