BOTDR检测钢筋混凝土梁分布式应变的试验研究
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摘要
为了验证基于布里渊光时域反射计(简称BOTDR)的光纤传感技术应用于桥梁健康监测的可行性,本文在钢筋混凝土简支梁的钢筋和混凝土表面布置了分布式光纤传感系统,对各级荷载作用下构件混凝土和钢筋的应变分布进行了在线监测。试验结果表明,BOTDR光纤传感技术能够准确监测试验梁的应变,并可识别梁的结构性破坏,可以应用于桥梁的健康监测。
In order to verify the feasibility of BOTDR (Brillouin optical time-domain reflectometer) in the application of bridge health monitoring, an optical fiber system using BOTDR was placed on the reinforced concrete beam. The strains in the beam were measured continuously along the sensing fibers bonded to the steel bars and attached on the concrete surface. Experimental results show that BOTDR can be successfully employed to measure the distributed strains in the bridge, and the structural damage can be correctly identified. BOTDR is fully applicuble to bridge health monitoring.
In order to verify the feasibility of BOTDR (Brillouin optical time-domain reflectometer) in the application of bridge health monitoring, an optical fiber system using BOTDR was placed on the reinforced concrete beam. The strains in the beam were measured continuously along the sensing fibers bonded to the steel bars and attached on the concrete surface. Experimental results show that BOTDR can be successfully employed to measure the distributed strains in the bridge, and the structural damage can be correctly identified. BOTDR is fully applicuble to bridge health monitoring.
引文
[1]董聪,范立础,陈肇元.结构智能健康诊断的理论与方法[J].中国铁道科学,2002,23(1):11-23
[2]欧进萍,关新春.土木工程智能结构体系的研究与发展[J].地震工程与工程振动,1999,19(2):21-28
[3]金秀梅,杜彦良,孙宝臣.大型桥梁光纤传感监测技术及其信息处理方法研究[J].石家庄铁道学院学报,2001,14(4):18-23
[4]毕卫红,郎利影.光纤传感技术在桥梁检测中的应用[J].仪表技术与传感器,2002,6:49-51
[5]莫淑华,王殿富.钢筋混凝土桥梁结构健康监测新技术研究[J].桥梁建设,2003,2:73-77
[6]Ohno H,Naruse H,Kurashima T,et al.Application of bril-louin scattering-based distributed optical fiber strain sensor toactual concrete piles[J].IEICE Trans.Electron.2002,E85-C(4):945-951
[7]Naruse H,Uchiyama Y,Kurashima T,et al.River leveechange detection using distributed fiber optic strain sensor[J].IEICE Trans.Electron.2000,E83-C(3):462-467
[8]Watkins Steve E.Smart bridges with fiber-optic sensors[J].IEEE Instrumentation&Measurement Magazine,2003,(6):25-30
[9]Maaskant R,Alavie T,Measures R M et al.Fiber-opticbragg grating sensors for bridge monitoring[J].Cement andConcrete Composites,1997,19:21-33
[10]施斌,徐洪钟,张丹等.BOTDR应变监测技术应用在大型基础工程健康诊断中的可行性研究[J].岩石力学与工程学报,2004,23(3):493-499
[11]耿军平,许家栋,韦高等.基于布里渊散射的分布式光纤传感器的进展[J].测试技术学报,2002,16(2):87-91
[12]徐芝纶.弹性力学[M].第三版.北京:高等教育出版社,1990
[2]欧进萍,关新春.土木工程智能结构体系的研究与发展[J].地震工程与工程振动,1999,19(2):21-28
[3]金秀梅,杜彦良,孙宝臣.大型桥梁光纤传感监测技术及其信息处理方法研究[J].石家庄铁道学院学报,2001,14(4):18-23
[4]毕卫红,郎利影.光纤传感技术在桥梁检测中的应用[J].仪表技术与传感器,2002,6:49-51
[5]莫淑华,王殿富.钢筋混凝土桥梁结构健康监测新技术研究[J].桥梁建设,2003,2:73-77
[6]Ohno H,Naruse H,Kurashima T,et al.Application of bril-louin scattering-based distributed optical fiber strain sensor toactual concrete piles[J].IEICE Trans.Electron.2002,E85-C(4):945-951
[7]Naruse H,Uchiyama Y,Kurashima T,et al.River leveechange detection using distributed fiber optic strain sensor[J].IEICE Trans.Electron.2000,E83-C(3):462-467
[8]Watkins Steve E.Smart bridges with fiber-optic sensors[J].IEEE Instrumentation&Measurement Magazine,2003,(6):25-30
[9]Maaskant R,Alavie T,Measures R M et al.Fiber-opticbragg grating sensors for bridge monitoring[J].Cement andConcrete Composites,1997,19:21-33
[10]施斌,徐洪钟,张丹等.BOTDR应变监测技术应用在大型基础工程健康诊断中的可行性研究[J].岩石力学与工程学报,2004,23(3):493-499
[11]耿军平,许家栋,韦高等.基于布里渊散射的分布式光纤传感器的进展[J].测试技术学报,2002,16(2):87-91
[12]徐芝纶.弹性力学[M].第三版.北京:高等教育出版社,1990
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