摘要
在水下盾构隧道结构健康监测系统中,如何确定各监测指标的合理安全预警值是实现隧道运营期结构安全状况科学评价和预警的基础。针对此问题,提出一种基于概率统计方法确定水下盾构隧道结构健康监测安全预警值的方法。介绍了监测数据概率统计分析的基本原理、正态分布的偏度-峰度检验法以及随机变量概率密度函数的多项式拟合法,并将其应用于某水下盾构隧道结构健康监测系统中,基于系统中某监测断面10支传感器一年期的监测数据,确定了相应监测指标的预警值。最终得到的预警结果与隧道的实际运营状况基本相符,证明基于概率统计方法确定水下盾构隧道结构健康监测安全预警值是一种行之有效的方法。
In the underwater shield tunnel structural health monitoring system,how to determine the reasonable safety early warning value of each monitoring index is the basis for realizing the scientific evaluation and early warning of structural safety during tunnel operation.To solve this problem,this paper proposes a probability statistical method to determine the early warning value of underwater shield tunnel structural health monitoring.The paper introduces the basic principle of probability statistical analysis of monitoring data,the skewness and kurtosis test method of normal distribution and the polynomial fitting method of probability density function of random variables,and applies the method to the health monitoring system of a underwater shield tunnel.Based on the one-year monitoring data of ten sensors in a monitoring section of the system,the early warning value of the corresponding monitoring index is determined.The final early warning result is basically consistent with the actual operation condition of the tunnel,which proves that the probability statistical method is an effective method to determine the early warning value of underwater shield tunnel structural health monitoring.
作者
阮俊安
李长俊
李明
汪漫
孙飞
陆钰铨
RUAN Jun’an;LI Changjun;LI Ming;WANG Man;SUN Fei;LU Yuquan(Hangzhou Urban River Protection and Management Center,Hangzhou 310003,China;Zhejiang Institute of Communications Co.,Ltd.,Hangzhou 310030,China;School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;School of Information Engineering,Wuhan Business University,Wuhan 430056,China)
出处
《安全与环境工程》
CAS
CSCD
北大核心
2022年第4期147-155,共9页
Safety and Environmental Engineering
基金
浙江省交通运输厅科技计划项目(2020005、2019010)
浙江省交通运输厅科技示范工程项目(2021070)。
关键词
水下盾构隧道结构
健康监测
安全预警值
概率统计方法
underwater shield tunnel structure
health monitoring
safety warning value
probability statistics method
