Fiber Optic Strain Monitoring for Long-Term Evaluation of a Concrete Footbridge Under Extended Test Conditionss
Fiber Optic Strain Monitoring for Long-Term Evaluation of a Concrete Footbridge Under Extended Test Conditionss
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DOI：
10.1109/jsen.2012.2234736
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发表时间：
2013-03-01
影响因子：
4.3
通讯作者：
Grattan, Kenneth T.
中科院分区：
文献类型：
--
作者：
Surre, Frederic;Sun, Tong;Grattan, Kenneth T.
经过两年的时间，在一座已有 50 年历史的混凝土人行桥上开发、测试和评估了一种光纤传感器系统，该系统可以安装并用于提供可靠和信息丰富的数据，该人行桥的使用条件众所周知。该桥现已停止使用，目前作为运行试验台，并且最近经历了不同的已知环境和负载条件。因此，在本文中，在测试期间使用光纤传感器系统诱发特定的和受控的损坏，监测其影响，从而记录对桥梁造成的变化。在这项为期两年的调查中，已经确定并解决了现有文献中未提供的与安装、使用、数据采集和性能评估相关的问题，为光学传感器的安装和使用的长期评估提供了有价值的信息，以更好地评估此类混凝土结构。
An optical fiber sensor system that can be installed and used to give reliable and informative data has been developed, tested, and evaluated, over an extended period of two years, on a redundant 50-year-old concrete footbridge whose conditions of use were well known. The bridge now serves as an operational test-bed as it has been taken out of service, and recently has been subjected to different known environmental and loading conditions. Thus in this paper, specific and controlled damage is induced, the effects are monitored, and thus the changes induced to the bridge are recorded, using the optical fiber sensor system over the test period. During this two-year survey, issues relating to the installation, use, data capture, and evaluation of performance not available in the present literature have been identified and addressed giving valuable information for the long-term evaluation on the installation and use of optical sensors to assess better such concrete structures.