| 基于光纤测温的大体积混凝土导温系数反演分析 |
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| 引用本文： | 江凯,周建兵,黄耀英,周宜红,陈池,周绍武,李金河.基于光纤测温的大体积混凝土导温系数反演分析[J].中国农村水利水电,2012,0(3):91-93. |
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| 作者姓名： | 江凯 周建兵 黄耀英 周宜红 陈池 周绍武 李金河 |
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| 作者单位： | 1. 三峡大学水利与环境学院,湖北宜昌,443002
2. 中国长江三峡集团,湖北宜昌,443002 |
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| 基金项目： | 国家自然科学基金;三峡大学基金 |
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| 摘 要： | 光纤测温是利用分布式光纤对混凝土内部温度进行高密度（时间上、空间上）、无污染（人为的、干扰的）的全自动化监测过程。为了反演出混凝土的导温系数,在某建设中的特高拱坝河床坝段典型浇筑仓,距离表面0.6m范围内,布置分布式光纤进行混凝土温度监测。由于浇筑仓混凝土的施工质量存在一定随机性,对距离混凝土表面不同深度处的分布式光纤测温数据取平均值进行反演。实践表明,采用分布式光纤测温所反演的导温系数是可行和可靠的。
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| 关 键 词： | 光纤测温 导温系数 反演分析 大体积混凝土 |
| 收稿时间： | 2011-08-24 |
| 修稿时间： | 2011-10-16 |
An Inverse Analysis of Thermal Diffusivity of Mass Concrete Based on Fiber Temperature Monitoring |
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| JIANG Kai,ZHOU Jian-bing,HUANG Yao-ying,ZHOU Yi-hong,CHEN Chi,ZHOU Shao-wu,LI Jin-he.An Inverse Analysis of Thermal Diffusivity of Mass Concrete Based on Fiber Temperature Monitoring[J].China Rural Water and Hydropower,2012,0(3):91-93. |
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| Authors: | JIANG Kai ZHOU Jian-bing HUANG Yao-ying ZHOU Yi-hong CHEN Chi ZHOU Shao-wu LI Jin-he |
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| Institution: | 1.College of Hydraulic and Environmental Engineering,Three Gorges University,Yichang 443002,Hubei Province,China; 2.Three Gorges Corporation,Yichang 443002,Hubei Province,China) |
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| Abstract: | Fiber distributed temperature monitoring is realized by carrying on high density(temporal and spatial) and pollution-free(factitious and interfered) monitoring automatically on the temperature of inner concrete.In order to determine the thermal diffusivity of mass concrete,based on the record of distributed fiber buried in the 0.6 meter distance from the surface of concrete of a certain ultra-high building dam.Due to the randomicity of construction quality in the concrete,this paper adopts the average value of distributed fiber’s temperature at the different distance from the surface of concrete.The result shows that thermal diffusivity based on the record of fiber distributed is feasible and reliable. |
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| Keywords: | fiber temperature monitoring thermal diffusivity inverse analysis mass concrete |
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