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低温下沥青混合料的中间主应力效应

Keywords: 道路工程,沥青混合料,真三轴试验,中间主应力效应,强度,低温

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Abstract:

?为了明确中间主应力对沥青混合料强度的影响,利用自主开发的能实现三向独立加载的简易真三轴试验设备,对3种沥青混合料开展了-10℃下的三向压缩强度试验,包括不同温度和加载速率下的强度试验,中间主应力在最大主应力和最小主应力之间变化时的强度试验,以及2个方向压力相等条件下的强度试验。结果表明:随着侧压的增加,沥青混合料的强度包络线逐渐弯曲;当中间主应力从最大主应力逐渐变化到最小主应力时,沥青混合料的破坏强度先增加后减小;同一π平面上的强度试验点离摩尔-库伦准则轮廓线较远,离双剪强度理论轮廓线较近;中间主应力对沥青混合料的强度有显著影响,建议采用能够反映中间主应力影响的强度理论来表征沥青混合料的破坏准则。

References

[1]  张占军,闵召辉,黄 卫.不同交联度环氧沥青混合料低温弯曲性能研究[J].中国公路学报,2012,25(1):35-39. ZHANG Zhan-jun,MIN Zhao-hui,HUANG Wei.Research on Bending Performances of Epoxy Resin Asphalt Mixes with Different Crosslink Densities at Low Temperatures[J].China Journal of Highway and Transport,2012,25(1):35-39.
[2]  毕玉峰,孙立军.沥青混合料抗剪试验方法研究[J].同济大学学报:自然科学版,2005,33(8):1036-1040. BI Yu-feng,SUN Li-jun.Research on Test Method of Asphalt Mixture's Shearing Properties[J]. Journal of Tongji University:Natural Science,2005,33(8):1036-1040.
[3]  俞茂宏.强度理论新体系:理论、发展和应用[M].2版.西安:西安交通大学出版社,2011. YU Mao-hong.Strength Theories New System:Theories,Development and Applying[M].2nd ed.Xi'an:Xi'an Jiaotong University Press,2011.
[4]  WANG H L,SONG Y P.Behavior of Mass Concrete Under Biaxial Compression-tension and Triaxial Compression-compression-tension[J].Materials and Structures,2009,42(2):241-249.
[5]  SHANG H S,SONG Y P,QIN L K.Experimental Study on Strength and Deformation of Plain Concrete Under Triaxial Compression After Freeze-thaw Cycles[J].Building and Environment,2008,43(7):1197-1204.
[6]  TIWARI R P,RAO K S.Response of an Anisotropic Rock Mass Under Polyaxial Stress State[J].Journal of Materials in Civil Engineering,2007,19(5):393-403.
[7]  YIN J H,CHENG C M,KUMRUZZAMAN M,et al.New Mixed Boundary,True Triaxial Loading Device for Testing Three-dimensional Stress-strain-strength Behavior of Geomaterials[J].Canadian Geotechnical Journal,2010,47(1):1-15.
[8]  锁利军,童怀峰,王秉纲.正温时沥青混合料中间主应力效应试验[J].长安大学学报:自然科学版,2011,31(4):12-15,21. SUO Li-jun,TONG Huai-feng,WANG Bing-gang.Influence of Intermediate Principal Stress on Asphalt Mixture Strength in Positive Temperature[J].Journal of Chang'an University:Natural Science Edition,2011,31(4):12-15,21.
[9]  WANG L B,HOYOS L R,WANG J,et al.Anisotropic Properties of Asphalt Concrete:Characterization and Implications for Pavement Design and Analysis[J].Journal of Materials in Civil Engineering,2005,17(5):535-543.
[10]  李志强,张鸿儒,侯永峰,等.土石坝沥青混凝土心墙三轴力学特性研究[J].岩石力学与工程学报,2006,25(5):997-1002. LI Zhi-qiang,ZHANG Hong-ru,HOU Yong-feng,et al.Triaxial Test Study on Mechanical Characteristics of Asphalt Concrete in the Core Wall of Earth-rock Fill Dam[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):997-1002.

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