西北极寒地区混凝土箱梁温度场实测与仿真分析

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摘要 This study evaluated the characteristics of temperature field distribution of the concrete box girder based on the middle bridge of Xiaosha River, and the effects of temperature in severely cold area were determined through experiments and finite element model (FEM) analysis. An FEM model of the concrete box girder considering the temperature field was established based on heat transfer theory to verify the accuracy of the model. Moreover, the calculation of the vertical temperature distribution and the temperature distribution along the web plate was conducted. The distribution along the through-thickness direction of the bottom plate and the temperature drop caused by cold waves was evaluated. Results suggest that the published codes and guidebooks were relevant. The effect of the most unfavorable condition of temperature load was also calculated. The result drawn from this research shows that the distribution of temperature field at the cross sections in the severely cold area differed greatly from that in the current code. However, the temperature difference in the top flange was not evident, whereas it was much larger in the bottom flange. The temperature in the web was higher than that in the top flange under solar radiation and was lower during cooling. The results of the temperature effect were much more critical than the result calculated using the vertical temperature gradient in the current code. The tensile stress produced by temperature load may cause cracks. Consequently, sufficient attention should be paid to the damage of thermal effects when calculating the concrete box girder in the northwest of the severely cold area.

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	刘江
	刘永健
	刘广龙
	张宁

关键词 ： bridge engineering, temperature field distribution, FEM, concrete box girder, temperature effect, severely cold area

Abstract：This study evaluated the characteristics of temperature field distribution of the concrete box girder based on the middle bridge of Xiaosha River, and the effects of temperature in severely cold area were determined through experiments and finite element model (FEM) analysis. An FEM model of the concrete box girder considering the temperature field was established based on heat transfer theory to verify the accuracy of the model. Moreover, the calculation of the vertical temperature distribution and the temperature distribution along the web plate was conducted. The distribution along the through-thickness direction of the bottom plate and the temperature drop caused by cold waves was evaluated. Results suggest that the published codes and guidebooks were relevant. The effect of the most unfavorable condition of temperature load was also calculated. The result drawn from this research shows that the distribution of temperature field at the cross sections in the severely cold area differed greatly from that in the current code. However, the temperature difference in the top flange was not evident, whereas it was much larger in the bottom flange. The temperature in the web was higher than that in the top flange under solar radiation and was lower during cooling. The results of the temperature effect were much more critical than the result calculated using the vertical temperature gradient in the current code. The tensile stress produced by temperature load may cause cracks. Consequently, sufficient attention should be paid to the damage of thermal effects when calculating the concrete box girder in the northwest of the severely cold area.

Key words： bridge engineering temperature field distribution FEM concrete box girder temperature effect severely cold area

收稿日期: 2017-06-27

基金资助:Supported by the Foundation of the Transport Construction Science and Technology Project of Ministry of Transport of China (Nos 2014318802220; 2014318363230), Transport Construction Science and Technology Project of Ministry of Transport of Inner Mongolia Autonomous Region (No.NJ-2018-27)

通讯作者: LIU Jiang E-mail: liu331991099@qq.com

引用本文:

刘江, 刘永健, 刘广龙, 张宁. 西北极寒地区混凝土箱梁温度场实测与仿真分析[J]. Journal of Highway and Transportation Research and Development, 2018, 12(3): 37-45.
LIU Jiang, LIU Yong-jian, LIU Guang-long, ZHANG Ning. Measurement and Simulation of Temperature Field of Concrete Box Girder in Northwest Severely Cold Area. Journal of Highway and Transportation Research and Development, 2018, 12(3): 37-45.

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http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/ 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2018/V12/I3/37

[1] PRIESTLEY M J N. Thermal Gradients in Bridges-Some Design Considerations[J]. New Zealand Engineering, 1972, 27(7):228-233.
[2] KENNEDY J.B, SOLIMAN M H. Temperature Distribution in Composite Bridges[J]. Journal of Structural Engineering, ASCE, 1987, 113(3):475-482.
[3] AASHTO, Bridge Design Manual-Load and Resistance Factor Design[S].
[4] JTG D60-2015, General Specifications for Design of Highway Bridges and Culverts[S].(in Chinese)
[5] TB 10002.3-2005, Code for Design on Reinforced and Prestressed Concrete Structure of Railway Bridge and Culvert[S].
[6] KEHLBECK. The Influence of Solar Radiation on the Bridge Structure[M]. Beijing:China Railway Publishing House, 1981:1-32.(in Chinese)
[7] PRIESTLEY M.J.N. Design of Concrete Bridges for Temperature Gradients[J]. Journal of American Concrete Institute, 1978, 75(5):209-217.
[8] ELBADRY M M, GHALI A. Temperature Variations in Concrete Bridges[J]. Journal of Structural Engineering, 1983, 109(109):2355-2374.
[9] MIRAMBELL E, AGUADO A. Temperature and Stress Distributions in Concrete Box Girder Bridges[J]. Journal of Structural Engineering, 1990, 116(9):2388-2409.
[10] WANG Jian, FANG Zhi. Temperature Variation of Concrete Box Girder Bridge[J]. Journal of Hunan University:Natural Sciences, 2008, 35(4):23-28.(in Chinese)
[11] LEI Xiao, YE Jian-shu, WANG Yi, et al. Analysis of Concrete Box-Girder Temperature and Strain Based on Longterm Observation[J]. Journal of Jiangsu University:Natural Science Edition, 2010, 31(2):230-234.(in Chinese)
[12] LARSSON O, THELANDERSSON S. Estimating Extreme Values of Thermal Gradients in Concrete Structures[J]. Materials and Structures, 2011, 44(8):1491-1500.
[13] WU Liu-zheng. Simulation of Temperature Field of Concrete Box-girder Bridge[J]. Journal of Highway and Transportation Research and Development, 2011, 28(10):65-69.(in Chinese)
[14] GU Bin, CHEN Zhi-jian, CHEN Xin-di. Simulation Analysis for Solar Temperature Field of Concrete Box Girder Based on Meteorological Parameters[J]. Journal of Zhejiang University:Natural Science Edition, 2012, 42(5):950-955.(in Chinese)
[15] ZHANG Xi-min, REN Ze-pei, MEI Fei-ming. Heat Transfer[M]. 5th edition. Beijing:China Architecture & Building Press, 2007.(in Chinese)
[16] EVSEEV E G, KUDISH A I. The Assessment of Different Models to Predict the Global Solar Radiation on a Surface Tilted to the South[J]. Solar Energy, 2009, 83(3):377-388.
[17] DUFFIE J A, BECKMAN W A. Solar Energy of Thermal Process[M]. New York:John Wiley and Sons, 1991.
[18] XIANG Xue-jian, DONG Jun, LIU Hao-su, etc. Determination of Parameters of Temperature Field of Box-girder Bridge in Winter Weather of Plateau[J]. Journal of Highway and Transportation Research and Development. 2012, 29(3):58-63.(in Chinese)
[19] LIU Wen-li, GONG Jin-xin, ZHANG Xiu-fang. Impact of Pavement Layer on Vertical Temperature Gradient of T-girder Bridge[J]. Journal of Highway and Transportation Research and Development. 2014, 31(10):45-50.(in Chinese)