摘要
为解决城市深基坑变形监测网在观测过程中由于空间限制和施工影响引起观测值异常问题,采用稳健估计理论,利用数据探测方法,对稳健估计中等价权因子的阈值进行调整.研究结果表明:修正后的丹麦法稳健估计可以有效抵御观测值中粗差的影响,并且迭代速度快、平差精度满足变形监测要求.该研究成果是一种提高变形监测质量和保障施工安全的有效方法.
In order to solve abnormal values affected by space limitation and construction during observation process of deformation monitoring, reducing the impact of gross is essential. Based on robust estimation and using data snooping, this paper adjusted the threshold of equivalent weight factor in robust estimation. The result shows that modified Danish method can effectively reduce the impact of gross errors in observed values, and it also has faster iteration speed and can meet the precision requirement. The study proves that it can improve the quality of deformation monitoring and ensure construction safety.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2014年第5期577-581,共5页
Journal of Liaoning Technical University (Natural Science)
基金
吉林省科技发展计划基金资助项目(20120437)
国家自然科学基金资助项目(41072196)
关键词
深基坑
监测网
稳健估计
数据探测法
丹麦法
deep foundation pit
monitoring network
robust estimation
data snooping
Danish method
