基于长标距FBG传感器宏应变技术的损伤识别研究

重大工程结构在服役期间常遭受各种作用而导致抗力衰减。一旦这些结构失效，将会导致区域功能瘫痪和生态灾难，造成巨大的经济损失和人员伤亡，因此为重大工程结构建立一套健康监测系统具有重要的现实意义。损伤识别是结构健康诊断的核心技术之一，而准确地测量结构的响应信息是损伤识别方法有效的前提。结构荷载的复杂性致使结构损伤具有不可预见性，如果采用电阻应变片技术，其准确性和工程量之大对于工程应用来说是不可取的。采用准分布式长标距光纤布拉格光栅（FBG）应变传感器，并结合其在组合梁中损伤识别的应用以验证其性能。试验结果表明，随着标距的增加，准分布式长标距FBG应变传感器损伤识别的效率降低。

Abstract

With the construction of a number of massive projects, the structure failure becomes more common and will probably lead to huge economic losses and casualties. It has important and practical significance to establish a complete set of structural health monitoring system for these massive projects. Damage detection is one of the core technologies for structural health identification. Although a variety of damage identification methods have been developed, accurately measuring the response of the structural information is still the premise of the effectiveness of damage identification. Damage in the massive structures cannot be predicted, so it is not advisable to perform health monitoring by means of strain gauges. We use quasi-distributed long-gage optical fiber Bragg grating (FBG), combined with the damage detection application in simply supported steel-concrete composite beam, to verify the performance of such a sensor. The test results show that damage identification efficiency is reduced with the increase in length of the quasi-distributed long-gage FBG strain sensor gage.

参考文献

[1] Jinping Ou, Hui Li. Structural health monitoring in mainland China: review and future trends[J]. Structural Health Monitoring, 2010, 9(3): 219-231.

[2] Goutham R. Kirikera, O. Balogun, Sridhar Krishnaswamy. Adaptive fiber Bragg grating sensor network for structural health monitoring: applications to impact monitoring [J]. Structural Health Monitoring, 2011, 10(1): 5-16.

[3] Suzhen Li, Zhishen Wu. Development of distributed long-gage fiber optic sensing system for structural health monitoring[J]. Structural Health Monitoring, 2007, 6(2): 133-143.

[4] J P Conte, M Liu, D Inaudi. Earthquake response monitoring and damage identification of structures using long-gage fiber optic sensors[C]. 14th ASCE Engineering Mechanics Division Conference, 2000.

[5] D Inaudi, N Casanova. Geo-structural monitoring with long-gage interferometric sensors[C]. SPIE, 2000, 3995: 164–174.

[6] B Glisic, D Inaudi. Integration of long-gage fiber-optic sensor into a fiber-reinforced composite sensing tape[C]. SPIE, 2003, 5050: 179-186.

[7] G M Kamath, Ramesh Sundaram, Nitesh Gupta, et al.. Damage studies in composite structures for structural health monitoring using strain sensors [J]. Structural Health Monitoring, 2010, 9(6): 497-512.

[8] 张晓丽, 梁大开, 芦吉云, 等. 高可靠光纤布拉格光栅传感器网络设计[J]. 中国激光, 2011, 38(1): 0105004.

Zhang Xiaoli, Liang Dakai, Lu Jiyun, et al.. A high reliabile optic fiber Bragg grating sensor network design[J]. Chinese J Lasers, 2011, 38(1):0105004.

[9] 倪敏, 冉曾令, 鲁恩, 等. 157 nm激光微加工制作的微光纤压力传感器[J]. 激光与光电子学进展, 2011, 48(12): 120606.

Ni Min, Ran Zengling, Lu En, et al.. Fiber-optic tip pressure sensor fabricated by 157 nm laser [J]. Laser & Optoelectronics Progress, 2011, 48(12): 120606.

[10] 兰玉文, 刘波, 罗建花. 基于分布布拉格反射光纤激光器的压力传感器[J]. 光学学报, 2009, 29(3): 629-631.

Lan Yuwen, Liu Bo, Luo Jianhua. Pressure sensor based on distributed-Bragg-reflector fiber laser[J]. Acta Optica Sinica, 2009, 29(3): 629-631.

[11] 张昊, 刘波, 贾承来. 一种有源光纤折射率的新型测量方法[J]. 光学学报, 2010, 30(s1): s100213.

Zhang Hao, Liu Bo, Jia Chenglai. A novel method for active fiber refractive index measurement[J]. Acta Optica Sinica, 2010, 30(s1): s100213.

[12] 田石柱, 温科, 王大鹏.基于长标距光纤光栅传感器的钢梁损伤定位研究[J].激光与光电子学进展,2013,50(4):040603.

Tian Shizhu, Wen Ke, Wang Dapeng.Study on damage location of steel beam based on long-gage fiber grating sensor[J].Laser & Optoelectronics Progress,2013,50(4):040603.

[13] 王连广. 钢与混凝土组合结构理论与计算[M]. 北京: 科学出版社, 2005. 47-49 .

Wang Lianguang. Steel and Concrete Composite Structure Theory and Calculation [M]. Beijing: Science Press, 2005. 47-49.

[14] 聂建国, 樊健生. 钢与混凝土组合结构[M]. 北京: 中国建筑工业出版社, 2008: 107-110 .

Nie Jianguo, Fan Jiansheng. Steel and Concrete Structure [M]. Beijing: China Building Industry Press, 2008. 107-110.

田石柱, 温科, 王大鹏. 基于长标距FBG传感器宏应变技术的损伤识别研究[J]. 激光与光电子学进展, 2014, 51(1): 010604. Tian Shizhu, Wen Ke, Wang Dapeng. Study on Damage Detection Based on Long-gage Fiber Bragg Grating Sensor[J]. Laser & Optoelectronics Progress, 2014, 51(1): 010604.

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