基于光纤光栅的锚端预应力传感器的研究  

Study on Optical Fiber Bragg Grating Prestress Sensors at Anchor Position

作　　者：李小阳[1] 杜彦良 李剑芝[2] 

机构地区：[1]石家庄铁道学院大型结构健康诊断与控制研究所,河北石家庄050043 [2]北京交通大学机电工程学院,北京100044

出　　处：《石家庄铁道学院学报》2007年第1期72-76,共5页Journal of Shijiazhuang Railway Institute

基　　金：国家自然科学基金资助项目(50278028);河北省自然科学基金资助项目(E2006000389)

摘　　要：摘要:针对传统检测方法长期稳定性差、信号不能远距离传输等缺点,基于光线光栅的优点,以及预应力钢绞线的特殊结构和复杂工作情况,本文提出了基于光纤光栅的预应力锚端传感测试方案,进行了光纤光栅锚端预应力传感器的研究,实验表明该传感器重复性好,测量精度高,可以满足预应力锚端监测的需要。In order to overcome many disadvantages of traditional detecting methods, such as poor stability and short measure range, according to the special structure and complex working characters of pre-stress wire, in this paper the optical fiber bragg grating sensing system located at anchor position is founded and the optical fiber bragg grating prestress sensors located at anchor position is studied based on the merit of optical fiber bragg grating. The experimental results indicate that this sensor has the characteristic of good reproducibility and high precision, so it satisfies the need for monitoring the pre-stress at the anchor position.

关 键 词：预应力 传感器 光纤光栅 监测 

分 类 号：TP212.6[自动化与计算机技术—检测技术与自动化装置]