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| 引用本文: | 蒋建华,袁迎曙.考虑日照影响的环境温度作用谱修正方法[J].建筑材料学报,2014,17(1):78-83 |
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| 考虑日照影响的环境温度作用谱修正方法 |
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蒋建华1, 袁迎曙2
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1.河海大学土木与交通学院,江苏南京210098;2.中国矿业大学力学与建筑工程学院,江苏徐州221116
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| 摘要: |
| 为了建立自然气候环境温度作用的定量模式，首先探讨了自然气候环境温度变化规律、混凝土内部微环境温度响应滞后特征以及自然气候环境温度作用谱构筑方法，然后研究了日照对混凝土表面温度的影响，最后提出了无遮挡条件下自然气候环境温度作用谱的修正方法，并通过对自然气候环境无遮挡条件下混凝土内部微环境温度响应的预测来验证该修正方法的可行性.结果表明：日照作用下混凝土表面温度基本高于大气温度；可以采用气温日较差Rm指标来衡量日照作用大小；随着Rm的增大，混凝土表面温度增量呈线性增加；以修正环境温度作用谱预测自然气候环境无遮挡条件下混凝土内部微环境温度响应时，预测精度得到提高，因此该修正方法具有可行性. |
| 关键词: 自然气候 混凝土 温度 作用谱 日照 |
| DOI：103969/j.issn1007 9629201401014 |
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| 基金项目:国家自然科学基金资助项目（50878207）；河海大学中央高校基本科研业务费专项资金资助项目（2012B02614）；中国博士后科学基金面上项目（2013M531265） |
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| Revised Method of Temperature Action Spectrum in Natural ClimateEnvironment with Consideration of Sunlight Exposure |
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JIANG Jianhua1, YUAN Yingshu2
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1.College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China;2.School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
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| Abstract: |
| In order to establish the quantitative model of temperature action in natural climate environment, the law of temperature change in natural climate environment, the lag characteristics of temperature response of micro environment inside concrete and the method to establish the temperature action spectrum in natural climate environment were explored first. Then the influence of sunlight exposure on the temperature of concrete surface was studied. Finally, the revised method to obtain temperature action spectrum in natural climate environment under unsheltered condition was put forward, and its feasibility was verified through an example of the prediction of temperature response of micro environment inside concrete in natural climate environment under unsheltered condition. The results show that the temperature of concrete surface is basically higher than air temperature under the action of sunlight. The diurnal temperature range（Rm） can be used as an indicator of sunlight intensity, and the temperature increase of concrete surface increases linearly with the increase of Rm. The prediction accuracy of temperature response of micro environment inside concrete in natural climate environment under unsheltered condition is improved when the revised action spectrum of environmental temperature is used, so the revised method is feasible. |
| Key words: natural climate concrete temperature action spectrum sunlight |
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| 参考文献(共12条): | | [1]NGUYEN T S,LORENTE S,CARCASSES M.Effect of the environment temperature on the chloride diffusion through CEM I and CEM V mortars:An experimental study[J].Construction and Building Materials,2009,23（2）:795 803. | | [2]SABINE C.Effect of temperature on porosity and on chloride diffusion in cement pastes[J].Construction and Building Materials,2008,22（7）:1560 1573. | | [3]ZIVICA V,KRAJCI L,BAGEL L,et al.Significance of the ambient temperature and the steel material in the process of concrete reinforcement corrosion[J].Construction and Building Materials,1997,11（2）:99 103. | | [4]NASSAR M M.The effect of environmental temperature on the corrosion of reinforced concrete[J].Corrosion Prevention and Control,1997,44（6）:167 172. | | [5]LINDVALL A.Environmental actions and response reinforced concrete structures exposed in road and marine environment[D].Goteborg:Chalmers University of Technology,2001. | [6]牛狄涛,董振平,浦聿修.预测混凝土碳化深度的随机模型[J].工业建筑,1999,29（9）:41 45.
NIU Ditao,DONG Zhenping,PU Yuxiu.Random model of predicting the carbonated concrete depth[J].Industrial Construction,1999,29（9）:41 45.（in Chinese） | [7]叶英华,董薇.由温湿度差异引起的不同城市钢筋混凝土梁耐久寿命差异分析[J].工业建筑,2007,37（S1）：969 972.
YE Yinghua,DONG Wei.Analysis of durability difference on RC beams in main cities due to the dissimilarity of temperature and relative humidity[J].Industrial Construction,2007,37（S1）:969 972.（in Chinese） | [8]李果.钢筋混凝土耐久性的环境行为与基本退化模型研究[D].徐州:中国矿业大学,2004.
LI Guo.Durability behavior and basic models of reinforced concrete deterioration under climate environments[D].Xu zhou:China University of Mining and Technology,2004.（in Chinese） | [9]马文彬.气候环境变化与混凝土内微环境的响应规律研究[D].徐州:中国矿业大学,2007.
MA Wenbin.Response regularity of microenvironment in concrete under climate variations[D].Xuzhou：China University of Mining and Technology,2007.（in Chinese） | [10]蒋建华,袁迎曙,张习美.自然气候环境的温度作用谱和混凝土内温度响应预计[J].中南大学学报：自然科学版，2010,41（5）:1923 1930.
JIANG Jianhua,YUAN Yingshu,ZHANG Ximei.Action spectrum of temperature in natural climate environment and prediction of temperature response in concrete[J].Journal of Central South University：Natural Science，2010,41（5）:1923 1930.（in Chinese） | [11]蒋建华.气候环境作用定量模式及其在混凝土结构寿命预计中应用[D].徐州:中国矿业大学,2011.
JIANG Jianhua.Quantitative model of climate load and its applications in life predictions of concrete structures[D].Xuzhou:China University of Mining and Technology,2011.（in Chinese） | [12]蒋建华,袁迎曙,孙红萍,等.人工气候下混凝土温度响应规律与预计模型[J].中国矿业大学学报,2009,38（6）:800 805.
JIANG Jianhua,YUAN Yingshu,SUN Hongping,et al.Response laws and prediction model of temperature change in concrete in a controlled climate[J].Journal of China University of Mining and Technology,2009,38（6）:800 805.（in Chinese） |
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