基于结构健康监测系统的某办公建筑运营期结构响应分析

Structural response analysis of an office building during operation based on structural health monitoring system

建筑运营期间的结构响应能够直接反映结构安全状态,因此运用结构健康监测系统对结构响应进行实时监测具有十分重要的意义。以某办公建筑为研究载体,运用MIDAS Gen对多工况作用下的结构响应进行计算分析,根据计算结果并结合结构特点,优化设计监测点布置方案,建设一套由光纤光栅类仪器设备组成的结构健康监测系统,实时采集应力应变、倾斜、沉降及振动监测数据,应用SPSS对不同类型的监测数据进行相关性分析,为该类型结构建筑安全评价提供综合评判依据。结果表明,光纤光栅类结构健康监测系统具备较高的数据准确性与长期稳定性,监测结果能够为结构后期的加固与维护提供可靠的数据支持。

The structural response of a building during operation can directly reflect its safety status,so it is important to use a structural health monitoring system to monitor the structural response in real time.Using an office building as a research carrier,the structural response under multiple working conditions was calculated and analysed by using MIDAS Gen.Based on the calculation results and combined with the structural characteristics,a monitoring point arrangement scheme was optimised and a structural health monitoring system consisting of fiber grating type instrumentation was constructed to collect real-time stress-strain,tilt,settlement and vibration monitoring data.SPSS was applied to analyse the correlation between the different types of monitoring data to provide a comprehensive evaluation basis for the safety assessment of this type of structure.The results show that the fiber grating type structural health monitoring system has high data accuracy and long-term stability,the monitoring results can provide reliable data support for the later reinforcement and maintenance of the structure.