| 光纤光栅测力环在悬索桥索力监测中的应用 |
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| 引用本文： | 南秋明.光纤光栅测力环在悬索桥索力监测中的应用[J].公路交通科技,2010,27(3). |
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| 作者姓名： | 南秋明 |
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| 作者单位： | 武汉理工大学,光纤传感技术国家重点工业性试验基地,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(60537050) |
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| 摘 要： | 桥梁索力监测一直是工程界亟待解决的难题。现有检测手段仅能用于短期测试,无法满足工程长期测试需求。提出了一种基于光纤光栅传感技术的差动式结构的测力装置—光纤光栅测力环,该装置运用了光纤光栅传感新技术和差动式结构设计,解决了索力长期监测的技术瓶颈,即信号的远距离传输和温度补偿。试验研究表明,该测力环信号传输距离超过10 km,温度补偿误差不超过满量程的0.1‰/℃,而且测量精度高,长期稳定性好,可以实现索力的分布式测量。该装置应用于阳逻悬索桥的锚跨索力测量,安装使用方便,实现了索力的远程、长期、实时在线监测,满足了工程测试需求。
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| 关 键 词： | 桥梁工程 长期在线监测 光纤光栅传感技术 光纤光栅测力环 差动式结构 索力 |
Application of FBG Force-testing Ring in Monitoring Cable Force of Suspension Bridge |
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| NAN Qiuming.Application of FBG Force-testing Ring in Monitoring Cable Force of Suspension Bridge[J].Journal of Highway and Transportation Research and Development,2010,27(3). |
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| Authors: | NAN Qiuming |
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| Institution: | State Key Industrial Test Base of Fiber Optic Sensing Technology;Wuhan University of Technology;Wuhan Hubei 430074;China |
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| Abstract: | The monitoring for cable force of bridges is always considered by engineers as an urgent problem.Present test means are only useful for short-term measurement but cannot meet the demand for long-term monitoring.A novel type of force-testing device which has differential structure design,fiber Bragg grating(FBG) force-testing ring,was put forward based on FBG sensing technology.The device can solve technique bottlenecks of long-term monitoring,which are long distance transmission and temperature compensation... |
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| Keywords: | bridge engineering long-term and online monitoring FBG sensing technology FBG force-testing ring differential structure cable force |
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