| 应用FBG传感器测量高性能混凝土梁养护早期性能 |
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| 引用本文： | 负英伟,;马兴国,;Jang Il-Young,;张晓玲,;Kim Min-wook.应用FBG传感器测量高性能混凝土梁养护早期性能[J].四川建材学院学报,2009(1):24-28. |
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| 作者姓名： | 负英伟 ;马兴国 ;Jang Il-Young ;张晓玲 ;Kim Min-wook |
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| 作者单位： | [1]洛阳理工学院土木工程系,中国洛阳471023; [2]黑龙江工程学院机电工程系,中国哈尔滨150050; [3]Kumoh国立工科大学校土木环境工程系,韩国Gumi730—701; [4]中国核动力研究设计院,中国成都610041 |
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| 基金项目： | 韩国建设交通部科技基金项目（05-CCT-D11）;洛阳理工学院人才引进科研基金项目（2006011）. |
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| 摘 要： | 在高性能混凝土构件无载荷养护早期，混凝土较大的自生收缩和温度变形在混凝土结构内部产生微裂纹将对高性能混凝土结构的耐久性产生不可忽视的影响。运用光纤布拉格光栅（FBC）埋设型传感器成功检测了高性能混凝土梁构件在其无载养护早期的应变和温度变化。由于布拉格光栅同时感应温度变化和应变，因此需要设置FBG温度传感器来补偿应变传感器的温度影响。FBG双传感器成功检测了高性能混凝土梁构件的早期变形性能和温度变化，试验结果表明高性能混凝土梁在养护早期无载阶段的自收缩变形比较大，浇注养护18h达到430με的最大值，同时分析了减水剂用量对高性能混凝土早期变形性能的影响。
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| 关 键 词： | 高性能混凝土梁 早期变形性能 光纤布拉格光栅(FBG)传感器 温度补偿 |
Application of FBG Sensors in Monitoring Properties of High Performance Concrete Beam during Early Curing Period |
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| Affiliation: | YUN Ying-wei, MA Xing-guo, Jang Il-Young, ZHANG Xiao-ling, Kim Min-wook ( 1. Civil Engineering Dept. , Luoyang Institute of Science and Technology, Luoyang 471023, Henan, China;2. Electro Mechanic Engineering Dept. , Heilongjiang Institute of Technology, Harbin 150050, Heilongjiang, China; 3. Civil and Environmental Engineering Dept. , Kumoh National Institute of Technology, Gumi, 730-701, South Korea; 4. Nuclear Power Institute of China, Chengdu 610041, Sichuan, China) |
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| Abstract: | In this paper, the properties of HPC beam specimens during the early curing period were studied by FBG embedded strain sensors. Since FBG senses both strain and temperature simultaneously, FBG temperature sensors were used to compensate temperature effect of FBG strain sensors for accurate measurement of strain. Meanwhile FBG temperature sensors can monitor inner temperature changes of concrete. Simultaneous measuring of strain and temperature has been realized here. The results show that early age autogenous shrinkages of HPC concrete beams during the early curing period are pretty high. Also the content of water reducing agent on autogenous shrinkage has been analyzed. |
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| Keywords: | HPC Beam Early-age Properties FBG sensors Temperature Compensation |
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