[1]李志刚,赵启林,王景全.混凝土结构内部应变光纤检测试验研究[J].东南大学学报(自然科学版),2004,34(2):257-259.[doi:10.3969/j.issn.1001-0505.2004.02.027]
　Li Zhigang,Zhao Qilin,Wang Jingquan.Experimental research on strain measurement in concrete specimens by fiber optical sensors[J].Journal of Southeast University (Natural Science Edition),2004,34(2):257-259.[doi:10.3969/j.issn.1001-0505.2004.02.027]
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混凝土结构内部应变光纤检测试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第2期
页码:
257-259
栏目:
土木工程
出版日期:
2004-03-20

文章信息/Info

Title:
Experimental research on strain measurement in concrete specimens by fiber optical sensors
作者:
李志刚1;  赵启林1;  王景全2
1 解放军理工大学工程兵工程学院, 南京 210007; 2 东南大学土木工程学院, 南京 210096
Author(s):
Li Zhigang1;  Zhao Qilin1;  Wang Jingquan2
1 Engineering Institute of Engineering Corps, PLA University of Science and Technology,Nanjing 210007,China
2 College of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
光纤;  应变传感器;  混凝土
Keywords:
optical fiber;  strain sensor;  concrete
分类号:
TU317.3
DOI:
10.3969/j.issn.1001-0505.2004.02.027
摘要:
简要介绍了一种基于光纤白光Michelson干涉仪原理的光纤应变传感器和测量混凝土内部应变的原理,并采用Michelson光纤白光应变测量干涉系统,利用新型光纤传感探头,对混凝土内部的一维应变状态进行了测量,给出了混凝土试件单轴力学实验结果并与Instron8506液压伺服材料实验机得到的结果进行了比较和分析.试验显示当荷载在极限荷载的80%以前为线性阶段,线性范围内光纤传感器与Instron8506测量结果大体符合,说明线性区间应力应变内部状态与外部是一致的.试验结果表明,这种新型光纤传感器显示了良好的传感性能,能够监测混凝土内部应变状态,发挥出成活率高、绝对值测量和寿命长等优势.
Abstract:
A fiber-optic sensor based on white light Michelson interferometer and the principle of detecting strain in concrete are introduced. One dimensional internal strains in concrete specimens were measured based on embedded novel optical fiber sensors with a white light interferometric Michelson system. The results obtained are analyzed and compared with the experimental data given by Instron8506 material testing machine. The experiment shows that when load is less than 80 percent of utmost load the relation between stress and strain keeps linear, and the results obtained through optical fiber sensor and Instron8506 are generally accordant. It indicates that the interior status of stress and strain is coherent with exterior in linear area. Experiment results show that the novel sensor has advantages in surviving capability, absolute value measurement and service life.

参考文献/References:

[1] Mendez A,Morse T F.Applications of embedded optical fiber sensors in reinforced concrete buildings and structures [J]. The International Society for Optical Engineering,1989,1170:60-69.
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[3] Hotate Karuo,Tanaka Masato.Correlation-based continuous-wave technique for optical fiber distributed strain measurement using Brillouin scattering with cm-order spatial resolution[J].IEICE Trans Electron,2001, E84-C(12):1823-1828.
[4] Bao Xiaoyi,de Merchant M,Brown A,et al.Tensile and compressive strain measurement in the lab and field with the distributed Brillouin scattering sensor [J].Journal of Lightwave Technology,2001,19(11):1698-1704.
[5] Idriss R L,Kodindouma M B,Kersey A D,et al.Multiplexed Bragg grating optical fiber sensors for damage evaluation in highway bridges [J].Smart Mater Struct,1998,7(2):209-216.
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[9] 刘志海,杨军,居剑,等.用于混凝土内部的光纤应变传感器及其埋入方法研究[J].哈尔滨工程大学学报,2001,22(3):93-97.
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相似文献/References:

[1]孙小菡,金梅.有机包层光纤的二阶非线性效应[J].东南大学学报(自然科学版),1990,20(4):60.[doi:10.3969/j.issn.1001-0505.1990.04.009]
　Sun Xiaohan,Jin Mei.Nonlinear Effects of Second Order in Optical Fibers with Organic Cladding[J].Journal of Southeast University (Natural Science Edition),1990,20(2):60.[doi:10.3969/j.issn.1001-0505.1990.04.009]

备注/Memo

备注/Memo:
作者简介: 李志刚(1972—),男,博士,副教授,seulzg@263.net.
更新日期/Last Update: 2004-03-20