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Abstract

To explore the fatigue damage mechanism and micro-mechanical behavior of the pavement of rubber powder asphalt mixture (ARHM- 20) of expressway influenced by heavy vehicles,a three-dimensional microstructural model of the mixture was built based on the discrete element method,and research on the damage mechanism from aggregate motion to macroscopic permanent deformation were conducted.The Burger's constitutive model was used to characterize the viscoelastic properties of asphalt mortar.The macro mechanical parameters of Burger ’s model at different temperatures were obtained through asphalt creep tests,and the micro modeling parameters were obtained based on the macro and micro conversion formulas.The irregular coarse aggregate was made by Solidworks software to make the model closer to the actual working conditions.In this paper,under the distributed loading method,the contact force was extracted after rolling the tire on the ground,and then the force was applied to the model.Based on the actual highway engineering gradation,the rutting test specimen was prepared and the laboratory rutting test was carried out to verify the validity and correctness of the three-dimensi onal microstructure model.The research results show that the discrete element method can be used to study the micro motion-mechanical behavior of asphalt mixture.The macro behavior of rutting evolution is mainly generated by the micro stress distribution and motion evolution of the coarse aggregate in the asphalt mixture.Compared with the asphalt mixture without rubber powder,the ARHM- 20 asphalt mixture has better high-temperature fatigue resistance.

Publication Date

6-27-2024

DOI

10.14048/j.issn.1671-2579.2024.03.006

First Page

53

Last Page

62

Submission Date

February 2025

Reference

[1]KALYANKAR R ,UDDIN N .Simulating the effects of surface roughness on reinforced concrete T beam bridge under single and multiple vehicles [J].Advances in Acoustics and Vibration ,2016 ,2016 :3594148 .
[2]李沛洪 ,任贵政 ,巫伟军 .非均质沥青混合料劈裂试验应力分布规律研究 [J].公路 ,2017 ,62(6):247-251.LI Peihong ,REN Guizheng ,WU Weijun .Study on stress distribution law of heterogeneous asphalt mixture splitting test[J].Highway ,2017 ,62(6):247-251.
[3]TONG J S ,MA T ,SHEN K R ,et al .A criterion of asphalt pavement rutting based on the thermal-visco-elastic-plastic model [J].International Journal of Pavement Engineering ,2022 ,23(4):1134 -1144 .
[4]WANG L B ,KANG X ,JIANG P W .Vibration analysis of a multi-span continuous bridge subject to complex traffic loading and vehicle dynamic interaction [J].KSCE Journal of Civil Engineering ,2016 ,20(1):323-332.
[5]ZHANG X ,CHEN E L ,GAO P Y ,et al .Microdynamic simulations of crack evolution in asphalt mixtures under three-point bending loads [J].Archive of Applied Mechanics ,2021 ,91(11):4485 -4497 .
[6]叶向前 .基于离散元方法的薄层罩面沥青混合料力学特性研究 [D].重庆 :重庆交通大学 ,2021 .YE Xiangqian .Study on mechanical properties of thin overlay asphalt mixture based on discrete element method[D].Chongqing :Chongqing Jiaotong University ,2021 .
[7]WANG H ,ZHOU Z H ,HUANG W L ,et al .Investigation of asphalt mixture permanent deformation based on three-dimensional discrete element method [J].Construction and Building Materials ,2021 ,272:121808 .
[8]NIAN T F ,GE J G ,LI P ,et al .Improved discrete element numerical simulation and experiment on low-temperature anti-cracking performance of asphalt mixture based on PFC 2D[J].Construction and Building Materials ,2021 ,283:122792 .
[9]XUE B ,XU J ,PEI J Z ,et al .Investigation on the micromechanical response of asphalt mixture during permanent deformation based on 3D virtual wheel tracking test [J].Construction and Building Materials ,2021 ,267:121031 .
[10]ZHANG K ,XIE W ,ZHAO Y L .Permanent deformation characteristic of asphalt mixture under coupling effect of moisture ,overload and loading frequency [J].Construction and Building Materials ,2021 ,272:121985 .
[11]彭勇 ,章秀芳 ,郭泽宇 ,等.离散元法分析集料接触特性对沥 青 混 合 料 剪 切 疲 劳 寿 命 的 影 响 [J].吉 林 大 学 学 报 (工学版 ),2023 ,53(1):178-187.PENG Yong ,ZHANG Xiufang ,GUO Zeyu ,et al .Influence of aggregate contact characteristics on shear fatigue life of asphalt mixtur es using discrete element method [J].Journal of Jilin University (Engineering and Technology Edition ),2023 ,53(1):178-187.
[12]WANG H ,HUANG W L ,CHENG J J ,et al .Mesoscopic creep mechanism of asphalt mixture based on discrete element method [J].Construction and Building Materials ,2021 ,272:121932 .
[13]张飞 ,王岚 ,邢永明 .温拌胶粉改性沥青混合料的低温性能[J].中外公路 ,2022 ,42(3):174-179.ZHANG Fei ,WANG Lan ,XING Yongming .Low temperature performance of modified asphalt mixtures with warm mix rubber powder [J].Journal of China & Foreign Highway ,2022 ,42(3):174-179.
[14]叶长建 ,陆少毅 ,黄秋山 ,等.废胶粉 /天然沥青复合改性沥青 流 变 性 能 与 改 性 机 理 研 究 [J].中 外 公 路 ,2022 ,42(3):219-224.YE Changjian ,LU Shaoyi ,HUANG Qiushan ,et al .Study on rheological properties and modification mechanism of crumb rubber/natural asphalt composite modified asphalt[J].Journal of China & Foreign Highway ,2022 ,42(3):219-224.
[15]孙泽强 ,周晓蕾 ,宋亮 ,等.SBS/ 胶粉复合改性沥青混合料研究进展 [J].中外公路 ,2021 ,41(6):239-244.SUN Zeqiang ,ZHOU Xiaolei ,SONG Liang ,et al .Research progress of SBS/crumb rubber composite modified asphalt mixture [J].Journal of China & Foreign Highway ,2021 ,41(6):239-244.
[16]ZHANG X ,CHEN E L ,LI N P ,et al .Micromechanical analysis of the rutting evolution of asphalt pavement under temperature –stress coupling based on the discrete element method [J].Construction and Building Materials ,2022 ,325:126800 .
[17]陈俊 ，张东 ，黄晓明 .离散元颗粒流软件 (PFC )在道路工程中的应用 [M].北京 :人民交通出版社股份有限公司 ,2016 .CHEN Jun ,ZHANG Dong ,HUANG Xiaoming .Application of discrete element particle flow software (PFC ) in road engineering [M].Beijing :China Communications Press Co .,Ltd.,2016 .
[18]马庆伟 ,郭忠印 ,李文博 ,等.不同因素对橡胶复合改性沥青高温性能影响分析 [J].中外公路 ,2022 ,42(3):225-230.MA Qingwei ,GUO Zhongyin ,LI Wenbo ,et al .Analysis on the influence of different factors on the high temperature performance of composite rubber asphalt [J].Journal of China & Foreign Highway ,2022 ,42(3):225-230.

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