摘要
通过分析传统GM(1,1)模型的局限性,提出了混合整体最小二乘法(混合LS-TLS)的GM(1,1)模型,并将其应用于宁夏某深基坑水平位移的监测中。同时,将此模型与最小二乘法(LS)的GM(1,1)模型及整体最小二乘法(TLS)的GM(1,1)模型进行了对比,分析了3种模型所求水平位移的预测值。结果表明,混合LS-TLS的GM(1,1)模型更符合工程实际,预测精度更高,在深基坑水平位移监测中具有一定的实用性。
GM （1,1）model based on combined total least squares （combined LS-TLS） is proposed by analyzing the limitations of traditional GM （ 1,1 ）, and it is applied to the horizontal displacement monitoring in a deep foundation pit engineering of Ningxia. Meanwhile, we contrast the proposed model against the traditional GM （1,1）model based on least squares （LS）, and the total least squares （TLS）, and analyze the prediction of horizontal displacement. Results show that GM （ 1,1 ） model of combined LS-TLS is more fit with engineering practice with a higher precision of prediction, and more practical in the horizontal displacement monitoring of deep foundation pit engineering.
出处
《测绘地理信息》
2014年第6期36-38,46,共4页
Journal of Geomatics
基金
国家自然科学基金资助项目(41174010
41374011)
宁夏回族自治区交通运输厅科技资金资助项目
关键词
混合整体最小二乘法
GM(1
1)模型
深基坑水平位移
预测结果分析
combined total least squares
GM （ 1,1 ） model
the horizontal displacement monitoring of deep foundation pit engineering
results and analysis of precision
