[1] Chen Jun, Huang Xiaoming, Wang Linbing, Wu Jiantao, et al. Dynamic response of multi-scale structurein flexible pavement to moving load [J]. Journal of Southeast University (English Edition), 2013, 29 (4): 425-430. [doi:10.3969/j.issn.1003-7985.2013.04.013]
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Dynamic response of multi-scale structurein flexible pavement to moving load(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 29
- Issue:
- 2013 4
- Page:
- 425-430
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2013-12-20
Info
- Title:
- Dynamic response of multi-scale structurein flexible pavement to moving load
- Author(s):
- Chen Jun1; Huang Xiaoming2; Wang Linbing3; Wu Jiantao1; Liu Yun1
-
1 College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
2 School of Transportation, Southeast University, Nanjing 210096, China
3 The Via Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, VA 24061, USA
- PACS:
- U414
- DOI:
- 10.3969/j.issn.1003-7985.2013.04.013
- Abstract:
- In order to study the dynamic responses in the microstructures of the pavement structure, the multi-scale modeling subjected to moving load is analyzed using the discrete element method(DEM). The macro-scale discrete element model of the flexible pavement structure is established. The stress and strain at the bottom of the asphalt concrete layer under moving load are calculated. The DEM model is validated through comparison between DEM predictions and the results from the classical program. Based on the validated macro-scale DEM model, the distribution and the volumetric fraction of coarse aggregate, mastics and air voids at the bottom of the asphalt layer are modeled, and then the multi-scale model is constructed. The dynamic response in the microstructures of the multi-scale model are calculated and compared with the results from the macro model. The influence of mastic stiffness on the distribution of dynamic response in the microstructures is also analyzed. Results show that the average values and the variation coefficient of the tensile stress at the aggregate-mastic interface are far more than those within the mastics. The dynamic response including stress and strain distributes non-uniformly in both mastics and the interface. An increase in mastic stiffness tends to a uniform distribution of tensile stress in asphalt concrete.
References:
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Memo
- Memo:
-
Biography: Chen Jun(1981—), male, doctor, lecturer, chen_jun2728@163.com.
Foundation items: The National Natural Science Foundation of China(No.51208178, 51108157), China Postdoctoral Science Foundation(No.2012M520991).
Citation: Chen Jun, Huang Xiaoming, Wang Linbing, et al. Dynamic response of multi-scale structure in flexible pavement to moving load.[J].Journal of Southeast University(English Edition), 2013, 29(4):425-430.[doi:10.3969/j.issn.1003-7985.2013.04.013]