摘要
隧道结构健康是判断隧道安全的重要指标,因而对隧道结构健康监测和评估是隧道安全管理的主要手段。本文针对隧道多为长距离、大范围的恶劣环境以及围岩-结构自身复杂性,使得传统的方式无法满足隧道实时、快速、连续的监测要求的情形,构建了由采集层、传输层、基础层和应用层完整的4层框架组成的隧道结构健康监测信息化系统,并采用光纤光栅技术进行数据采集;通过隧道结构健康监测信息化系统的设计与应用,验证了实时、在线、连续隧道参数监测系统的稳定性和可靠性,并实现了隧道安全信息化监测预警功能,同时基于应变和裂缝位移连续监测数据的分析,可为后续隧道系统安全评定、控制措施制定提供数据支持和理论依据。
Tunnel structural health is an important index to judge the safety of tunnels,so tunnel structural health monitoring and assessment is the main means of tunnel safety management.Due to tunnels＇ harsh environments such as long-distance,wide range and complex surrounding rock structure,traditional monitoring methods cannot meet the requirements of real-time,fast and continuous monitoring.This paper establishes a complete four-frame monitoring information system for tunnel structural health which includes collection layer,transport layer,base layer and application layer,and applies the FBG technology to data acquisition in collection layer.The application of the monitoring information system for tunnel structure health verifies the stability and reliability of real-time,on-line,continuous tunnel parameter monitoring;the system also realizes the function of tunnel safety information monitoring and early warning.Besides,the analysis of the continuous monitoring data of strain and cracks of tunnel provides extensive data and theoretical basis for tunnel safety assessment and control measures formulation.
出处
《安全与环境工程》
CAS
北大核心
2014年第5期158-163,共6页
Safety and Environmental Engineering
基金
福建省自然科学基金项目(2012J05088)
关键词
隧道
结构健康
数据采集
监测信息化系统
预警
安全评估
tunnels
structural health
data collection
monitoring information system
warning
safety assessment
