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间接拉伸虚拟试验模式下沥青混合料的应力分布

, PP. 22-27

Keywords: 道路工程,沥青混合料,虚拟试验,间接拉伸试验,应力分布,仿真

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Abstract:

为了更准确地评价间接拉伸模式下沥青混合料的二维应力分布状态,利用X-rayCT扫描沥青混合料试件,获取混合料内部真实三维细观结构(集料、砂胶和空隙),根据三维重构理论和重构算法,建立沥青混合料三维虚拟试样.在此基础上,对沥青混合料虚拟试样进行低温、快速加载条件下的间接拉伸虚拟试验仿真.结果表明不同于以往基于弹性理论解的二维应力均匀分布结论,混合料试件水平轴向和竖直轴向上的应力都不再均匀对称分布,最大应力也不再出现在试件中心处.间接拉伸虚拟试验方法克服了以往忽略混合料内部细观结构的缺陷,可以更为真实地模拟试件受荷作用下的力学状态.研究方法是对计算机数字化设计沥青混合料目标的有益探索.

References

[1]  JTJ 0522-2000,公路工程沥青及沥青混合料试验规程[S].JTJ 0522-2000,Standard Test Methods of Bitumen andBituminous Mixtures for Highway Engineering [S].
[2]  BUTTLAR W G,ROQUE R.Development and Evaluationof the Strategic Highway Research Program Measurementand Analysis System for Indirect Tensile Testing at LowTemperature [C]∥The 73rd TRB Annual Meeting.Washington,D.C.:TRB,1994:163-171.
[3]  SAMER W K.Development of Laboratory to Field ShiftFactors for Hot-Mix Asphalt Resilient Modulus [D].Blacksburg:Virginia Polytechnic Institute and StateUniversity,2003.
[4]  BRAZ D,MOTTA L M G,LOPES R T.ComputedTomography in the Fatigue Test Analysis of an AsphalticMixture [J].Applied Radiation and Isotopes,1999,50(4):661-671.
[5]  GARBOCZI E J.Three-Dimensional MathematicalAnalysis of Particle Shape Using X-ray Tomography andSpherical Harmonics:Application to Aggregates Used inConcrete [J].Cement and Concrete Research,2002,32(10):1621-1638.
[6]  皮育晖,张久鹏,黄晓明,等.沥青混合料劈裂试验数值模拟[J].公路交通科技,2007,24(8):1-6.PI Yuhui,ZHANG Jiupeng,HUANG Xiaoming,et al.Numerical Simulation of Indirect Tensile Tests of AsphaltMixtures [J].Journal of Highway and TransportationResearch and Development,2007,24(8):1-6.
[7]  汪海年,郝培文.沥青混合料微细观结构的研究进展[J].长安大学学报:自然科学版,2008,28(3):12-13.WANG Hainian,HAO Peiwen.Advances in Microstructure Study on Asphalt Mixture [J].Journal ofChang'an University:Natural Science Edition,2008,28(3):12-13.
[8]  虞将苗,李晓军,王端宜,等.基于计算机层析识别的沥青混合料有限元模型[J].长安大学学报:自然科学版,2006,26(1):16-19.YU Jiangmiao,LI Xiaojun,WANG Duanyi,et al.FiniteElement Modeling of Asphalt Mix with X-ray ComputerizedTomography Processing[J].Journal of Chang'anUniversity:Natural Science Edition,2006,26(1):16-19.
[9]  吴文亮.沥青混合料的数字图像处理技术与概率统计方法研究[D].广州:华南理工大学,2009.WU Wenliang.Research on Digital Image ProcessingTechnique and Probability Statistics of Asphalt Mixtures[D].Guangzhou:South China University of Technology,2009.
[10]  YOU Z P.Development Of A Micromechanical ModelingApproach to Predict Asphalt Mixture Stiffness Using theDiscrete Element Method [D].Urbana-Champaign:University of Illinois,2003.
[11]  COLLOP A C,SCARPAS A,KASBERGEN C,et al.Development and Finite Element Implementation of StressdependentElastoviscoplastic Constitutive Model withDamage for Asphalt [C]∥The 82nd TRB Annual Meeting.Washington, D.C.:TRB,2003:96- 104.
[12]  ROBERT F L,MOHAMMAD L N,WANG L B.Historyof Hot Mix Asphalt Mixture Design in the United States[J].Journal of Materials in Civil Engineering,2002,14(4):279-293.
[13]  王旭,赵歆波,桂业英,等.医学图像序列的直接体绘制算法研究[J].生物医学工程学杂志,1999,16(3): 324-328.WANG Xu,ZHAO Xinbo,GUI Yeyin,et al.A NewAlgorithm for Direct Volume Rendering of Medic ImageSeries [J].Journal of Biomedical Engineering,1999,16(3):324-328.
[14]  HONDROS G.The Evaluation of Poisson's Ratio and theModulus of Materials of a Low Tensile Resistance by theBrazilian(Indirect Tensile)Test with Particular Referenceto Concrete [J].Australian Journal of Applied Science,1959,10(3):243-268.
[15]  WANG L B,WANG Y P, LI Q B, et al.StressConcentration Factor as a Performance Indicator for AsphaltMixes [J].Analysis of Asphalt Pavement Materials andSystems:Emerging Methods,2007,176:1-13.

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