摘要
在建筑工程水平位移变形监测中,基准点受周围环境的影响常发生水平位移,需要对其构建平面监测网并定期进行平面位置测量,进而判定基准点平面位置的稳定性,确定变形监测模型。本文主要研究了应用平均间隙法及其t分布单点检验法进行平面监测网基准点稳定性检验,首先对平面基准网两期观测数据分别进行秩亏自由网平差,然后对平差结果应用平均间隙法进行整体稳定性检验,若检验不通过,再运用单点检验法逐点检验,找出不稳定的基准点。本文以某平面监测基准网的稳定性分析为实例,验证了该方法对平面监测网基准点稳定性检验行之有效,且结果可靠,对平面监测网基准点稳定性分析有重要的参考价值。
In horizontal displacement deformation monitoring of construction projects,the horizontal displacement often occurs at the reference point affected by the surrounding environment.The plane monitoring network needs to be regularly constructed to carry out the plane position measurement,and furthermore,to determine the stability of the reference point plane position and build the deformation analysis model.In this paper,we studieds the average gap method to test the stability of the datum point of the planar monitoring network base on the t-distribution test of single-point.Firstly,the rank deficit free-network adjustment of the two-period observation datum is carried out.Next,the overall stability is tested based on the average gap method with the adjustment data.Finally,if it can not pass the test,the local stability is tested,point by point,based on the single-point test method,and the unstable benchmarks are found.In this paper,the stability analysis of a planar monitoring reference network was taken as an example to verify that this method is effective to analyze the stability of the reference point of the planar monitoring network,and the result is reliable.The study is of great reference value for the stability analysis of the reference points of the planar monitoring network.
作者
姜娇娇
赵相伟
刘备
于胜文
刘尚国
JIANG Jiaojiao;ZHAO Xiangwei;LIU Bei;YU Shengwen;LIU Shangguo(Geomatics College,Shandong University of Science and Technology,Qindao Shandong 266590,China;Shandong Province "3S" Engineering Research Center,Qindao Shandong 266590,China)
出处
《北京测绘》
2018年第7期755-760,共6页
Beijing Surveying and Mapping
基金
卫星测绘技术与应用国家测绘地理信息局重点实验室经费资助项目(KLMSTA-201605)
关键词
平面监测网
基准点
秩亏自由网平差
平均间隙法
单点检验法
plane monitoring network
reference point
rank deficit free network adjustment
average gap method
single-point test