内嵌大量程光纤光栅传感器的智能拉索研制及应用

黄忠; 胥献忠; 邓耀; 周怀健; 孙玉涛; 沈全喜

doi:doi:10.11977/j.issn.1004-2474.2023.03.026

压电与声光, 2023, 45 (3): 460, 网络出版: 2023-12-05

内嵌大量程光纤光栅传感器的智能拉索研制及应用

Development and Applications of Intelligent Cable Embedded with Large Range Fiber Bragg Grating Sensor

论文大纲

黄忠 ¹胥献忠 ¹邓耀 ¹周怀健 ¹孙玉涛 ¹沈全喜 ²

作者单位

¹ 中国建筑第五工程局有限公司, 湖南长沙 410004

² 桂林理工大学地球科学学院, 广西桂林 541004

摘要

针对大跨度空间索结构施工及运营阶段的索力监测难题, 基于光纤光栅应变敏感的特性, 利用“预应力原理”与凹槽封装技术,该文研制了一种内嵌封装大量程光纤光栅传感器的智能拉索, 解决了光纤光栅传感器工程应用易断裂及监测量程不足的缺陷。在此基础上对其进行张拉试验, 验证智能拉索的主要传感性能指标。试验结果表明, 光纤光栅传感器监测灵敏度约为0.002 66 nm/kN, 线性度误差≤2.86%, 迟滞误差≤1.53%, 重复性误差≤2.40%, 总精度误差≤4.03%, 监测量程可达到拉索极限承载力的80%。采用该技术, 利用光纤光栅传感器对某体育场馆索网结构的施工张拉进行实时监测, 并将光纤光栅传感器监测荷载与千斤顶张拉荷载进行对比, 索体张拉完成后两者误差仅为2.95%。该技术实现了拉索全生命周期、高精度的索力监测。

Abstract

Aiming at the difficulty of cable force monitoring in the construction and operation stages of large-span spatial cable structures, based on the strain-sensitive characteristics of fiber grating, an intelligent cable embedded with large range of fiber grating sensors is developed by using the "prestress principle" and groove packaging technology, which solves the defects of easy fracture and insufficient monitoring range of fiber Bragg grating sensors in engineering applications. On this basis, the main sensing performance indexes of the intelligent cable are verified by the tensioning test. The results show that the monitoring sensitivity of the fiber grating sensor is about 0.002 66 nm/kN and the linearity error is ≤2.86%, the hysteresis error is ≤1.53%, the repeatability error is ≤2.40%, the total accuracy is ≤4.03%, and the monitoring range can reach 80% of the ultimate bearing capacity of the cable. By using this technology, the construction tension of the cable network structure of a sports stadium is monitored in real-time by using fiber Bragg grating sensor, and the monitoring load of fiber Bragg grating sensor is compared with the tension load of the jack, and the error between the two is only 2.95% after the cable tension is completed. This technology enables high precision cable force monitoring through the full life cycle of the cable.

参考文献

[1] 张怡, 苏振华, 苏李渊,等.国家速滑馆项目高钒密闭索加工技术［J］. 施工技术, 2020, 49(10):7-11.

[2] 宋晓东,崔珊珊,熊文,等.基于健康监测的斜拉桥恒载索力提取与评估［J］.东南大学学报(自然科学版),2020,50(6):1102-1108.

[3] 张士昌,徐晓明,高峰.苏州奥体中心游泳馆钢屋盖结构设计［J］.建筑结构,2019,49(23):15-20.

[4] 李宏男,杨礼东,任亮, 等.大连市体育馆结构健康监测系统的设计与研发［J］.建筑结构学报,2013,34(11):40-49.

[5] 郑罡,孙测世,张晓东,等.刚性索动力学系统的约化与索力测量［J］.土木工程学报,2021,54(11):71-78.

[6] 张卓杰,王荣辉,甄晓霞,等.平行钢绞线斜拉索索力测试方法评价［J］.桥梁建设,2016,46(2):42-47.

[7] 姜建山,唐德东,周建庭.桥梁索力测量方法与发展趋势［J］.重庆交通大学学报(自然科学版),2008(3):379-382.

[8] 何武超,李劭晖,江震,等.基于光纤传感技术的桥梁拉索健康监测技术试验研究［J］.城市道桥与防洪,2019(6):140-142.

[9] JU M, PARK K, MOON D, et al. On strain measurement of smart GFRP bars with built-in fiber Bragg grating sensor［J］. Structural Engineering and Mechanics, 2018, 65(2):155-162.

[10] ZHENG Rui,LIU Lihua,ZHAO Xia, et al. Investigation of measurability and reliability of adhesive-bonded built-in fiber Bragg grating sensors on steel wire for bridge cable force monitoring［J］. Measurement, 2018, 129:349-357.

[11] 庄劲松. 光纤光栅智能拉索在泗阳大桥工程中的研究与应用［D］.长春: 吉林大学,2014.

[12] GOMEZ-MARTINEZ R,SANCHEZ-GARCIA R, ESCOBAR-SANCHEZ J A, et al. Monitoring two cable-stayed bridges during load tests with fiber optics［J］. Structures, 2021, 33: 4344-4358.

[13] 王天鹏,周果子.基于光纤光栅测力环的桥梁拉索索力监测及温度补偿研究［J］.中外公路,2017,37(3):112-117.

[14] LI F, DU Y L,SUN X,et al. Sensing performance assessment of twisted CFRP with embedded fiber Bragg grating sensors subjected to monotonic and fatigue loading［J］. Sensors and Actuators A:Physical,2018,271: 153-161.

[15] 刘晓江,周智,白石,等.超高灵敏度工程化光纤光栅索力传感器［J］.中国测试,2020,46(12):60-66.

[16] 李红明,张晓锋,唐军,等.新型光纤光栅测量法在系杆拱桥索力监测中的应用［J］.江苏科技大学学报(自然科学版),2020,34(3):97-104.

[17] 郭永兴,熊丽,周兴林,等.用于机械装备的高性能光纤光栅倾斜传感器［J］.机械工程学报,2022,58(8):71-78.

[18] 杨洪伟.分布式光纤光栅传感复用解调方法研究［J］.激光杂志,2021,42(6):128-133.

[19] 兰建功,张红俊.基于光纤光栅传感器的巷道矿压监测方法研究［J］.煤炭技术,2022,41(2):121-124.

[20] 谢凯,谭滔,司学振, 等.光纤光栅三维拉力传感器设计［J］.应用科学学报,2020,38(6):843-852.

[21] 李昌航,何欣,张黎,等.寒区管道光纤光栅变形监测技术试验研究［J］.昆明理工大学学报(自然科学版),2020, 45(4):115-119.

黄忠, 胥献忠, 邓耀, 周怀健, 孙玉涛, 沈全喜. 内嵌大量程光纤光栅传感器的智能拉索研制及应用[J]. 压电与声光, 2023, 45(3): 460. HUANG Zhong, XU Xianzhong, DENG Yao, ZHOU Huaijian, SUN Yutao, SHEN Quanxi. Development and Applications of Intelligent Cable Embedded with Large Range Fiber Bragg Grating Sensor[J]. Piezoelectrics & Acoustooptics, 2023, 45(3): 460.

内嵌大量程光纤光栅传感器的智能拉索研制及应用

关于本站 Cookie 的使用提示

全站搜索

内嵌大量程光纤光栅传感器的智能拉索研制及应用

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索