| 基于光纤测温的大体积混凝土热学参数反演分析 |
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| 引用本文： | 江凯,黄耀英,周宜红,陈池,周绍武. 基于光纤测温的大体积混凝土热学参数反演分析[J]. 人民长江, 2012, 43(2): 50-53 |
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| 作者姓名： | 江凯 黄耀英 周宜红 陈池 周绍武 |
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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. 中国长江三峡集团公司,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全自动化监测的过程。为了确定大体积混凝土的热学参数，基于某在建大坝内部埋设的分布式光纤测温值，运用三维有限元仿真分析和反分析优化设计中的单纯形法，对已浇筑块混凝土热学参数进行反演分析，然后根据所获得的反演参数进行新浇筑仓温度预报。分析表明，基于反演热学参数的计算温度与实测温度吻合较好，反演所得参数可靠，对指导现场施工具有参考价值。
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| 关 键 词： | 光纤测温 热学参数 大体积混凝土 反演分析 温度预报 |
Inverse analysis for thermal parameters of mass concrete based on fiber temperature monitoring |
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| JIANG Kai , HUANG Yaoying , ZHOU Yihong , CHEN Chi , ZHOU Shaowu. Inverse analysis for thermal parameters of mass concrete based on fiber temperature monitoring[J]. Yangtze River, 2012, 43(2): 50-53 |
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| Authors: | JIANG Kai HUANG Yaoying ZHOU Yihong CHEN Chi ZHOU Shaowu |
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| Affiliation: | 1.College of Hydraulic and Environmental Engineering,China Three Gorges University,Yichang 443002,China;2.China Three Gorges Corporation,Yichang 443002,China) |
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| Abstract: | High density automatic temperature monitoring on inner concrete is realized by distributed fiber.In order to determine the thermal parameters of mass concrete,based on the record of distributed fiber buried in the concrete of a being-constructed dam,by using 3-D FEM simulation analysis technology and simplex algorithm of the inverse analysis optimization method,we conduct inverse analysis to obtain the thermal parameters and then to forecast the temperature field of new pouring concrete.It shows that inversion results are reliable and the predicted temperature filed is in conformity well with the measured values.It provides a specific reference to temperature forecast and temperature field simulation calculation. |
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| Keywords: | fiber temperature monitoring thermal parameter mass concrete inverse analysis temperature forecast |
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