光纤光栅测力传感器的研究及应用

Application and Research of Load Cell Based FBG Sensors

与基于传统测试技术的测力传感器相比,光纤光栅测力传感器具有测试精度高、测试简单方便、长期可靠性好和抗干扰能力强等突出优点.文中介绍光纤光栅测力传感器的结构特点和研究过程,及其在系杆拱桥换索施工中的成功应用.应用结果表明:光纤光栅测力传感器可有效监测钢管混凝土系杆拱桥系杆的受力状况.

Comparing with the strain sensors based on traditional testing technology, fiber grating strain sensors have prominent advantages of high precision, simple and convenient testing, good long-term reliability, as well as powerful anti-jamming capability. This paper is mainly concerned with the structural characteristics and research process of fiber grating strain sensors, successful applications of strain sensors in the bowstring arch bridge, particularly the tie bar cable replacement. The results indicate that fiber grating strain sensors are able to monitor the tension status about reinforced concrete bowstring arch bridge effectively.