The Design and Theoretical Analysis of Comparison Device of Strain Sensor for Bridge Health Monitoring

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Peng, Lu^1 ; Wang, Yixu^1 ; Miao, Na^1 ; C., Zhang ; H., Sun ; B., Zhang

Research Institute of Highway Ministry of Transport, Beijing

100088, China^1

关键词: Bridge health monitoring;    Bridge health monitoring systems;    Fiber optic strain sensor;    Materials engineering;    Metrological traceabilitys;    On-line calibration;    Professional knowledge;    Transportation engineering;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/5/052119/pdf
DOI  :  10.1088/1755-1315/252/5/052119

来源: IOP

【 摘 要 】

The strain monitoring information of bridge health monitoring system plays an important role in the safe operation of the bridge, at present, the monitoring methods are mainly use strain monitoring sensors to obtain the bridge strain information in real time, the strain monitoring sensor can be divided into three categories: electric resistance strain sensor, vibrating wire strain sensor, fiber-optic strain sensor according to the test principle. At this stage, in order to meet the metrological traceability requirements of the strain monitoring sensor with the increasing use of strain monitoring sensors, the research institute of highway ministry of transport designed an equi-intensity cantilever beam device for online calibration service in the laboratory based on finite element analysis and mathematical model validation, combining with the disciplines professional knowledge of transportation engineering, mechanical design, machining and materials engineering and so on, and the equi-intensity cantilever beam device can realize the metrological traceability of different types of strain monitoring sensors for the traffic monitoring.