全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

水泥混凝土路面板硬化过程中温度分布实测与模拟

, PP. 33-40

Keywords: 道路工程,水泥混凝土路面板,有限差分法,温度模拟,硬化过程

Full-Text   Cite this paper   Add to My Lib

Abstract:

首先对水泥混凝土路面板在硬化过程中的温度分布进行实测;然后针对水泥混凝土路面硬化过程中的特征,调查研究水化热、热交换和气象环境因素3个方面的模型并选取相关参数,对路面板内硬化过程中的温度分布进行数值模拟.在温度场计算中,根据道路结构和热传导类型划分节点,采用有限差分法求解热传导微分方程,并利用Crank-Nicolson格式建立起相邻时间层、相邻节点之间的温度数值关系式.模拟温度值与实测温度值的对比表明,模拟结果较为准确,能够反映现场实际因素对路面板内温度变化的影响作用.本文建立的水化模型和路面板温度场预测模型对水泥混凝土材料具有普遍适用性,编制的数值模拟程序可以为水泥混凝土路面温度场及温度应力的进一步研究提供可靠依据.

References

[1]  KUO C M. Effective Temperature Differential in Concrete Pavements [J]. Journal of Transportation Engineering, 1998, 124(2): 112-116.
[2]  SCHINDLER A K, DOSSEY T, MCCULLOUGH B F. Temperature Control during Construction to Improve the Long Term Performance of Portland Cement Concrete Pavements [R]. Austin: The University of Texas at Austin, 2002.
[3]  BARBER E S. Calculation of Maximum Pavement Temperatures from Weather Reports [J]. Highway Research Board Bulletin, 1957 (168):1-8.
[4]  HERMANSSON ?. Simulation Model for Calculating Pavement Temperatures Including Maximum Temperature [J]. Transportation Research Record, 2000, 1699: 134-141.
[5]  KELLEY E F. Application of the Results of Research to the Structural Design of Concrete Pavements [J].ACI Journal Proceedings, 1939, 35(6): 437-464.
[6]  张君, 祁锟, 侯东伟. 基于绝热温升试验的早龄期混凝土温度场的计算[J]. 工程力学, 2009(2): 155-160. ZHANG Jun, QI Kun, HOU Dong-wei. Calculation of Temperature Fields in Early Age Concrete Based on Adiabatic Test [J]. Engineering Mechanics, 2009(2):155-160.
[7]  胡昌斌, 金王杰, 孙增华.水泥混凝土路面早龄期温度场数值模拟研究 [J].工程力学, 2013,30(4):175-183. HU Chang-bin, JIN Wang-jie, SUN Zeng-hua. Numerical Simulation of Early-age Temperature of Cement Concrete Pavement[J].Engineering Mechanics, 2013, 30(4):175-183.
[8]  BANZANT Z P. Constructive Equation for Concrete Creep and Shrinkage Based on Thermodynamics of Multi-Phase System [C]// Materials and Structures. Paris: RILEM, 1970: 3-36.
[9]  SCHINDLER A K, FOLLIARD K J. Heat of Hydration Models for Cementitious Materials [J]. ACI Materials Journal, 2005, 102(1): 24-33.
[10]  XU Q, RUIZ J M, HU J, et al. Modeling Hydration Properties and Temperature Developments of Early-Age Concrete Pavement Using Calorimetry Tests [J]. Thermochimica Acta, 2011, 512(1): 76-85.
[11]  严作人. 层状路面体系的温度场分析 [J]. 同济大学学报:自然科学版, 1984(3): 76-84. YAN Zuo-ren. Analysis of Temperature Field in Layered Pavement System [J]. Journal of Tongji University: Natural Science Edition, 1984(3): 76-84.
[12]  朱伯芳. 大体积混凝土温度应力与温度控制 [M].2版. 北京:中国电力出版社, 1999. ZHU Bo-fang. Thermal Stresses and Temperature Control of Mass Concrete [M]. 2nd ed. Beijing: China Electric Power Press, 1999.
[13]  RUIZ J M, RASMUSSEN R O, CHANG G K, et al. Computer-Based Guidelines for Concrete Pavements, Volume III: Technical Appendices [R]. Washington, D.C.: U.S. Department of Transportation, 2006.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133