| BOTDR检测钢筋混凝土梁分布式应变的试验研究 |
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| 引用本文： | 高俊启,施斌,张巍,张丹,朱虹.BOTDR检测钢筋混凝土梁分布式应变的试验研究[J].土木工程学报,2005,38(9):74-79. |
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| 作者姓名： | 高俊启 施斌 张巍 张丹 朱虹 |
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| 作者单位： | 1. 南京大学,江苏,南京,210093
2. 东南大学,江苏,南京,210096 |
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| 基金项目： | 国家杰出青年科学基金项目(40225006)，国家教育部重点项目资助(01086)，南京大学985工程项目 |
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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。
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| 关 键 词： | BOTDR 分布式应变 光纤传感 钢筋混凝土梁 健康监测 |
| 文章编号： | 1000-131X(2005)09-0074-06 |
| 修稿时间： | 2003年12月22 |
AN EXPERIMENTAL STUDY FOR MEASURING THE DISTRIBUTED STRAIN OF REINFORCED CONCRETE BEAM USING BOTDR |
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| Gao Junqi,Shi Bin,Zhang Wei,Zhang Dan,Zhu Hong.AN EXPERIMENTAL STUDY FOR MEASURING THE DISTRIBUTED STRAIN OF REINFORCED CONCRETE BEAM USING BOTDR[J].China Civil Engineering Journal,2005,38(9):74-79. |
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| Authors: | Gao Junqi Shi Bin Zhang Wei Zhang Dan Zhu Hong |
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| Affiliation: | Gao Junqi~1 Shi Bin~1 Zhang Wei~1 Zhang Dan~1 Zhu Hong~2 |
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| Abstract: | 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. |
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| Keywords: | BOTDR distributed strain sensing fiber reinforced concrete beam health monitoring |
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