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...

橡胶颗粒沥青混合料破冰试验及其数值模拟

Keywords: 道路工程,橡胶颗粒沥青混合料,破冰,离散元方法,PFC2D

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了揭示橡胶颗粒沥青混合料的破冰机理,通过构建不同冰层厚度条件下橡胶颗粒沥青混合料与冰层相互作用的离散元数值模型,将摆值平均加权回升量及摆值平均加权回升率的宏观参数与应变能及颗粒位移的细观参数进行比较发现:在冰层厚度达到4mm的节点处,摆值平均加权回升量及摆值平均加权回升率基本达到了恒定值;当冰层厚度为1mm时,模型中颗粒的位移最大,克服冰层颗粒间拉力所消耗的应变能最大.最后,从宏观角度与细观角度研究了橡胶颗粒沥青混合料的破冰机理.

References

[1]  周健,贾敏才.土工细观模型试验与数值模拟[M].北京:科学出版社,2008.
[2]  YOU Z P.Development of a micromechanical modeling approach to predict asphalt mixture stiffness using the discrete element method[D].Ilinois:University of Illinois at Urbana-Champaign,2003.
[3]  WANG L B,MYERS L A,MOHAMMAD L N,et al.Micromechanics study on top-down cracking[J].Journal of Transportation Research Board,2003,1853:12-1-133.
[4]  张洪伟.基于离散元方法的橡胶颗粒沥青混合料疲劳性能与破冰机理研究[D].西安:长安大学公路学院,2012.ZHANG Hong-wei.Fatigue properties and ice-breaking mechanism study of crumb rubber modified asphalt mixture on DEM[D].Xi'an:School of Highway,Chang'an University,2012.(in Chinese)
[5]  CHANG K G,MEEGODA J N.Micromechanical simulation of hot mix asphalt[J].Journal of Materials in Civil Engineering,1997,12(5):495-503.
[6]  BUTTLAR W G,YOU Z P.Discrete element modeling of asphalt concrete[J].Transportation Research Record,2001,1757:111-118.
[7]  张洪伟,韩森,张丽娟,等.盐化物沥青混凝土抑制结冰与融雪试验研究[J].长安大学学报:自然科学版,2011,2(8):76-81.ZHANG Hong-wei,HAN Sen,ZHANG Li-juan.The antifreezing and snow melting research of MFL modified asphalt concrete[J].Journal of Chang'an University:Natural Science Edition,2011,2(8):76-81.(in Chinese)
[8]  张洪伟.橡胶颗粒除冰雪沥青路面的研究[D].西安.长安大学公路学院,2009.ZHANG Hong-wei.Research on the antifreezing asphalt mixtures by crumb rubber modified[D].Xi'an:School of High Way Chang'an University,2009.(in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133