[1]高磊,解建光,吴成浩,等.基于粗集料形状特征的沥青混合料三维数字试件生成[J].东南大学学报(自然科学版),2017,47(4):793-798.[doi:10.3969/j.issn.1001-0505.2017.04.025]
　Gao Lei,Xie Jianguang,Wu Chenghao,et al.Generation of three-dimensional digital specimen of asphalt mixture based on coarse aggregate shape characteristics[J].Journal of Southeast University (Natural Science Edition),2017,47(4):793-798.[doi:10.3969/j.issn.1001-0505.2017.04.025]
点击复制

基于粗集料形状特征的沥青混合料三维数字试件生成()
分享到：

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第4期
页码:
793-798
栏目:
交通运输工程
出版日期:
2017-07-20

文章信息/Info

Title:
Generation of three-dimensional digital specimen of asphalt mixture based on coarse aggregate shape characteristics
作者:
高磊; 解建光; 吴成浩; 陈涛
南京航空航天大学航空宇航学院, 南京 210016
Author(s):
Gao Lei;  Xie Jianguang;  Wu Chenghao;  Chen Tao
College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
关键词:
沥青混合料;  三维数字试件;  离散单元法;  粗集料
Keywords:
asphalt mixture;  three-dimensional digital specimen;  discrete element method;  coarse aggregate
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2017.04.025
摘要:
为了准确地模拟沥青混合料相关试验,节省集料和试验设备等方面的成本,通过离散单元法模拟生成沥青混合料三维数字试件.采用中心球扩散方法构建出粗集料的扁平比与棱角性,通过调节不同粗集料模型的百分比来获得和实际相近的粗集料形状组合,并用一定质量的虚拟粗集料“clump”球体块取代同样质量的等效球体来表征粗集料级配特征,通过删除砂浆球体单元来模拟出空隙率特征,最终建立沥青混合料三维离散元模型.研究表明,沥青混合料三维数字试件可以很好地模拟粗集料的三维空间形状,准确表征粗集料的扁平比与棱角性特性,同时能够精确显示粗集料的级配特点与空隙分布,达到以虚拟试件代替真实试件进行试验的目的.
Abstract:
For the purpose of accurate simulations of the asphalt mixture tests and saving costs in aggregate consumption and testing equipments, a three-dimensional digital specimen of asphalt mixture was simulated by the discrete element method. The flatness and angularity were simulated by the diffusion method based on a central sphere. The coarse aggregate shape combinations which are close to the fact were obtained by adjusting percentage of different coarse aggregate models. To simulate the gradation characteristics of coarse aggregate, a certain quality of coarse aggregate “clump” was used to replace the equivalent sphere of the same mass. The void fraction was simulated by removing the unit of mortar sphere. Thus, the three-dimensional discrete element model of asphalt mixture was established. The results show that the three-dimensional digital specimen can accurately simulate the three-dimensional shape of coarse aggregate, and reflect the features of the flatness and angularity well. Meanwhile, the gradation characteristics and the void distribution of coarse aggregate can be precisely displayed. Therefore, the virtual specimen can replace the real specimen for testing.

参考文献/References:

[1] 杜群乐,许祥顺,徐淑云,等.二维数字试件中骨料模型分析[J].交通科技与经济,2010,12(2):82-85. DOI:10.3969/j.issn.1008-5696.2010.02.025.
Du Qunle, Xu Xiangshun, Xu Shuyun, et al. The aggregate model analysis in two-dimensional digital specimen [J]. Journal of Transportation Science and Technology and Economy, 2010, 12(2): 82-85. DOI:10.3969/j.issn.1008-5696.2010.02.025. (in Chinese)
[2] 王端宜,胡迟春,Kutay E,等.沥青混合料集料微观结构的三维重构与计算[J].建筑材料学报,2011,14(1):41-46. DOI:10.3969/j.issn.1007-9629.2011.01.009.
Wang Duanyi, Hu Chichun, Kutay E, et al. Three-dimensional reconstruction and calculation of asphalt mixture aggregate microstructure [J]. Journal of Building Materials, 2011, 14(1): 41-46. DOI:10.3969/j.issn.1007-9629.2011.01.009. (in Chinese)
[3] 万成,张肖宁,王邵怀,等.基于X-CT技术的沥青混合料三维数值化试样重建[J].公路交通科技,2010,27(11):33-37,42. DOI:10.3969/j.issn.1002-0268.2010.11.006.
Wan Cheng, Zhang Xiaoning, Wang Shaohuai, et al. Reconstruction of 3D digital specimen of asphalt mixture based on X-CT technology[J]. Journal of Highway and Transportation Research and Development, 2010, 27(11): 33-37,42. DOI:10.3969/j.issn.1002-0268.2010.11.006. (in Chinese)
[4] Wang L B, Park J Y, Fu Y R. Representation of real particles for DEM simulation using X-ray tomography[J]. Construction and Building Materials, 2007, 21(2): 338-346. DOI:10.1016/j.conbuildmat.2005.08.013.
[5] Liu Y, You Z, Zhao Y. Three-dimensional discrete element modeling of asphalt concrete: Size effects of elements[J]. Construction and Building Materials, 2012, 37: 775-782. DOI:10.1016/j.conbuildmat.2012.08.007.
[6] You Z, Liu Y, Dai Q. Three-dimensional microstructural-based discrete element viscoelastic modeling of creep compliance tests for asphalt mixtures[J]. Journal of Materials in Civil Engineering, 2011, 23(1): 79-87. DOI:10.1061/(asce)mt.1943-5533.0000038.
[7] 杨圣枫,杨新华,陈传尧.利用三维随机模型分析沥青混合料的蠕变行为[J].固体力学学报,2011,32(4):390-397.
　　Yang Shengfeng, Yang Xinhua, Chen Chuanyao. Analysis on creep behavior of asphalt mixture with 3D random model[J]. Acta Mechanica Solida Sinica, 2011, 32(4): 390-397.(in Chinese)
[8] 张德育,白桃,黄晓明,等.沥青混合料永久变形过程中粗集料空间运动分析[J].建筑材料学报,2015,18(3):421-427. DOI:10.3969/j.issn.1007-9629.2015.03.011.
Zhang Deyu, Bai Tao, Huang Xiaoming, et al. Analysis of space movement of coarse aggregates during permanent deformation of asphalt mixture[J]. Journal of Building Materials, 2015, 18(3): 421-427. DOI:10.3969/j.issn.1007-9629.2015.03.011. (in Chinese)
[9] Cundall P A. The measurement and analysis of acceleration on rock slopes [D]. London, UK:Imperial College of Science and Technology, University of London, 1971.
[10] Cundall P A, Strack O D L. A discrete numerical model for granular assemblies[J]. Géotechnique, 1979, 29(1): 47-65. DOI:10.1680/geot.1979.29.1.47.
[11] Buttlar W, You Z P. Discrete element modeling of asphalt concrete: Microfabric approach[J]. Transportation Research Record, 2001, 1757: 111-118. DOI:10.3141/1757-13.
[12] 胡国明.颗粒系统的离散元素法分析仿真[M].武汉:武汉理工大学出版社,2010:7-9.
[13] Lu M, McDowel G R. The importance of modeling ballast particle shape in the discrete element method [J]. Granular Matter, 2007, 9: 69-80. DOI:10.1007/s10035-006-0021-3.
[14] You Z, Buttlar W G. Discrete element modeling to predict the modulus of asphalt concrete mixture [J]. Journal of Materials in Civil Engineering, 2004, 16(2): 140-146. DOI:10.1061/(asce)0899-1561(2004)16:2(140).
[15] Gao L, Ni F, Luo H, et al. Evaluation of coarse aggregate in cold recycling mixes using X-ray CT scanner and image analysis [J]. Journal of Testing and Evaluation, 2016, 44(3): 20140231. DOI:10.1520/jte20140231.
[16] Gao L, Ni F, Luo H, et al. Characterization of air voids in cold in-place recycling mixtures using X-ray computed tomography [J]. Construction and Building Materials, 2015, 84: 429-436. DOI:10.1016/j.conbuildmat.2015.03.081.

相似文献/References:

[1]陈静云,丁银萍,周长红.基于料堆试验的沥青混合料离析影响因素分析[J].东南大学学报(自然科学版),2009,39(1):117.[doi:10.3969/j.issn.1001-0505.2009.01.022]
　Chen Jingyun,Ding Yinping,Zhou Changhong.Analysis on influence factors for hot mix asphalt segregation using heap test[J].Journal of Southeast University (Natural Science Edition),2009,39(4):117.[doi:10.3969/j.issn.1001-0505.2009.01.022]
[2]张久鹏,黄晓明.沥青混合料永久变形的弹黏塑-损伤力学模型[J].东南大学学报(自然科学版),2010,40(1):185.[doi:10.3969/j.issn.1001-0505.2010.01.035]
　Zhang Jiupeng,Huang Xiaoming.Viscoelastoplastic-damage mechanics model of permanent deformation in asphalt mixture[J].Journal of Southeast University (Natural Science Edition),2010,40(4):185.[doi:10.3969/j.issn.1001-0505.2010.01.035]
[3]黄晓明,肖益民,张裕卿.沥青混合料黏弹性裂纹扩展[J].东南大学学报(自然科学版),2009,39(3):586.[doi:10.3969/j.issn.1001-0505.2009.03.031]
　Huang Xiaoming,Xiao Yimin,Zhang Yuqing.Viscoelastic crack propagation in asphalt mixtures[J].Journal of Southeast University (Natural Science Edition),2009,39(4):586.[doi:10.3969/j.issn.1001-0505.2009.03.031]
[4]朱洪洲,黄晓明.沥青混合料疲劳性能关键影响因素分析[J].东南大学学报(自然科学版),2004,34(2):260.[doi:10.3969/j.issn.1001-0505.2004.02.028]
　Zhu Hongzhou,Huang Xiaoming.Analysis of key influential factors of asphalt-mixture fatigue property[J].Journal of Southeast University (Natural Science Edition),2004,34(4):260.[doi:10.3969/j.issn.1001-0505.2004.02.028]
[5]彭勇,孙立军,石永久,等.沥青混合料抗剪强度的影响因素[J].东南大学学报(自然科学版),2007,37(2):330.[doi:10.3969/j.issn.1001-0505.2007.02.029]
　Peng Yong,Sun Lijun,Shi Yongjiu,et al.Influence factors of shear resistance of asphalt mixture[J].Journal of Southeast University (Natural Science Edition),2007,37(4):330.[doi:10.3969/j.issn.1001-0505.2007.02.029]
[6]赵永利,吴震,黄晓明.沥青混合料水稳定性的试验研究[J].东南大学学报(自然科学版),2001,31(3):99.[doi:10.3969/j.issn.1001-0505.2001.03.024]
　Zhao Yongli,Wu Zhen,Huang Xiaoming.Tests of Moisture Susceptibility for Asphalt Paving Mixtures[J].Journal of Southeast University (Natural Science Edition),2001,31(4):99.[doi:10.3969/j.issn.1001-0505.2001.03.024]
[7]葛折圣,黄晓明,许国光.用弯曲应变能方法评价沥青混合料的低温抗裂性能[J].东南大学学报(自然科学版),2002,32(4):653.[doi:10.3969/j.issn.1001-0505.2002.04.026]
　Ge Zhesheng,Huang Xiaoming,Xu Guoguang.Evaluation of asphalt-mixture’s low-temperature anti-cracking performance by curvature strain energy method[J].Journal of Southeast University (Natural Science Edition),2002,32(4):653.[doi:10.3969/j.issn.1001-0505.2002.04.026]
[8]张东,黄晓明,赵永利.基于内聚力模型的沥青混合料劈裂试验模拟[J].东南大学学报(自然科学版),2010,40(6):1276.[doi:10.3969/j.issn.1001-0505.2010.06.028]
　Zhang Dong,Huang Xiaoming,Zhao Yongli.Simulation of indirect tension test of asphalt mixtures based on cohesive zone model[J].Journal of Southeast University (Natural Science Edition),2010,40(4):1276.[doi:10.3969/j.issn.1001-0505.2010.06.028]
[9]陈静云,周长红,王哲人.沥青混合料蠕变试验数据处理与粘弹性计算[J].东南大学学报(自然科学版),2007,37(6):1091.[doi:10.3969/j.issn.1001-0505.2007.06.030]
　Chen Jingyun,Zhou Changhong,Wang Zheren.Data processing and viscoelastic computation for creep test of asphalt mixture[J].Journal of Southeast University (Natural Science Edition),2007,37(4):1091.[doi:10.3969/j.issn.1001-0505.2007.06.030]
[10]张久鹏,黄晓明,李辉.重复荷载作用下沥青混合料的永久变形[J].东南大学学报(自然科学版),2008,38(3):511.[doi:10.3969/j.issn.1001-0505.2008.03.029]
　Zhang Jiupeng,Huang Xiaoming,Li Hui.Permanent deformation of asphalt mixture under repeated load[J].Journal of Southeast University (Natural Science Edition),2008,38(4):511.[doi:10.3969/j.issn.1001-0505.2008.03.029]

备注/Memo

备注/Memo:
收稿日期: 2017-01-10.
作者简介: 高磊(1988—),男,博士,讲师;解建光(联系人),男,博士,教授,xiejg@nuaa.edu.cn.
基金项目: 国家科技支撑计划资助项目(2015BAL02B02)、江苏省重点研发计划资助项目(BE2015349).
引用本文: 高磊,解建光,吴成浩,等.基于粗集料形状特征的沥青混合料三维数字试件生成[J].东南大学学报(自然科学版),2017,47(4):793-798. DOI:10.3969/j.issn.1001-0505.2017.04.025.
更新日期/Last Update: 2017-07-20