| 环境因素对混凝土结构特征参数影响的试验分析 |
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| 引用本文： | 闵志华,孙利民.环境因素对混凝土结构特征参数影响的试验分析[J].同济大学学报(自然科学版),2011,39(12):1739-1745. |
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| 作者姓名： | 闵志华 孙利民 |
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| 作者单位： | 1. 同济大学航空航天与力学学院,上海,200092
2. 同济大学土木工程防灾国家重点实验室,上海,200092 |
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| 基金项目： | 土木工程防灾国家重点实验室自主研究课题基金-团队重点项目（SLDRCE-08-A-05），国家自然科学基金重点资助项目(50538020) |
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| 摘 要： | 基于模型试验分析了环境因素对混凝土结构特征参数的影响,包括环境温度和环境湿度.首先对试验环境进行了介绍,接着基于混凝土连续梁模型分析了环境温度对结构模态频率的影响,尤其是结冰时的非线性效应.最后基于混凝土试块分析了环境湿度对结构质量的影响,发现具有明显的时间滞后效应.
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| 关 键 词： | 结构健康监测 环境因素 模型试验 特征参数 |
| 收稿时间： | 2010/10/19 0:00:00 |
| 修稿时间： | 2011/10/19 0:00:00 |
Test Analysis of Environmental Effect on Concrete Structural Feature Parameters |
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| MIN Zhihua and SUN Limin.Test Analysis of Environmental Effect on Concrete Structural Feature Parameters[J].Journal of Tongji University(Natural Science),2011,39(12):1739-1745. |
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| Authors: | MIN Zhihua and SUN Limin |
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| Institution: | College of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China;;State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China |
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| Abstract: | An experiment was made to investigate the environmental effect,including environmental temperature and humidity,on concrete structural feature parameters.First,the experiment condition was introduced.Then,based on a concrete continuous supported beam model,an analysis was made of the environmental temperature effect on structural modal frequencies,especially the nonlinear effect of freezing.Finally,the environmental humidity effect on structural mass was validated by a concrete block experiment.Results show... |
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| Keywords: | structural health monitoring environmental factor model experiment feature parameter |
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