对地铁结构监测基准点稳定性的研究

本文在研究大量变形监测技术与监测成果的基础上,注意到基准点的稳定性,它直接影响到监测成果的可靠性和客观性,尤其当基准点的稳定性超过两倍测量中误差时,监测成果不仅不能客观反映变形体的变形量,甚至出现较大偏差或错误,从而导致人们对变形体的变形趋势和安全性分析失准。因此,本文对监测基准点稳定性进行深入研究,并通过应用实例提出监测基准点的布设方法和稳定性分析方法。

Research on the Stability of Metro Structure Deformation Monitoring Datum Point

Based on an in-depth research of deformation monitoring techniques and results,this paper finds that the stability of datum points is very important,which directly affects the reliability and objectivity of the monitoring results.Especially when the datum points’ instability becomes larger than two times the measurement errors,monitoring results can not objectively reflect the deformation,on the contrary it is usually wrong.This leads to incorrect deformation trend analysis and safety analysis.Therefore,this paper makes an in-depth research of monitoring datum points’ stability,and proposes a new monitoring datum point layout method and stability analysis method based on application examples.