考虑锚索轴力的基坑变形监测数据处理方法

The method of foundation pit deformation monitoring data processing with consideration of anchor cable axial force

传统基坑变形监测往往存在时效性不高及数据处理缺少力学因素分析等问题,针对这一现象,提出了一种考虑锚索轴力的变形数据处理方法。采用多元回归分析方法探明了变形与时间因素及锚索轴力间的相关关系,阐述了回归模型参数的最小二乘估计与模型检验的详细过程。结合某基坑工程,利用Matlab软件编程实现了该模型的建立,并与其他5种模型进行对比,结果表明,该方法拟合精度及预测精度较高,适用于基坑变形监测数据处理。

Traditional foundation pit deformation monitoring often has problems such as low timeliness and lack of mechanical factor analysis in data processing.In view of this phenomenon,a deformation data processing method considering the axial force of anchor cable was proposed in this paper.The correlation among deformation with time factor and axial force of anchor cable was proved by multiple regression analysis,and the detailed process of least square estimation of regression model parameters and model checking was expounded.Combined with a foundation pit project,the establishment of the model was realized by matrix laboratory(MATLAB)software,and then compared with other five models.The results showed that the fitting accuracy and prediction accuracy of this method were higher,and it was suitable for data processing of foundation pit deformation monitoring.