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[1] Zhang Jiupeng, Huang Xiaoming,. Viscoelastic model for asphalt mixture under repeated haversine load [J]. Journal of Southeast University (English Edition), 2009, 25 (4): 523-526. [doi:10.3969/j.issn.1003-7985.2009.04.022]
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Viscoelastic model for asphalt mixture under repeated haversine load()
周期性半正矢荷载下沥青混合料的粘弹性本构模型
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
25
Issue:
2009 4
Page:
523-526
Research Field:
Traffic and Transportation Engineering
Publishing date:
2009-12-30

Info

Title:
Viscoelastic model for asphalt mixture under repeated haversine load
周期性半正矢荷载下沥青混合料的粘弹性本构模型
Author(s):
Zhang Jiupeng1;  Huang Xiaoming2
1Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an 710064, China
2School of Transportation, Southeast University, Nanjing 210096, China
张久鹏1;  黄晓明2
1长安大学特殊地区公路工程教育部重点实验室, 西安 710064; 2东南大学交通学院, 南京 210096
Keywords:
asphalt mixture;  permanent deformation;  mechanics model;  repeated haversine load
沥青混合料;  永久变形;  本构模型;  周期性半正矢荷载
PACS:
U416.2
DOI:
10.3969/j.issn.1003-7985.2009.04.022
Abstract:
The series-wound dashpot of the Burgers model is modified by introducing the strain hardening parameter, and the new model is considered as a combination of the modified dashpot and the Van Der Poel model. The cyclical pulse load consisting of a haversine load time and a rest period is adopted to simulate the actual vehicle load, and the permanent strain model under the repeated load is derived from the rheological and viscoelastic theories. Subsequently, the model is validated by the results of uniaxial repeated load permanent deformation tests of three asphalt mixtures. It is indicated that the proportion of residual viscoelastic strain to permanent strain decreases gradually with the load cycles, and only accounts for 2% to 3% during most of the loading period. If the rest period is long, the residual viscoelastic strain is little. The rest period of the actual vehicle load may be long enough, so the residual viscoelasticity can be ignored and the simplified model can be obtained. The proposed model can well describe the permanent deformation of asphalt mixtures under repeated load.
通过引入应变硬化变量, 对Burgers模型中串联粘壶进行了改进, 并将改进模型看成是由Van Der Poel模型与改进粘壶串联组成.采用半正矢波间歇荷载模拟实际轮载作用, 综合运用流变学和粘弹性力学理论推导了周期性荷载作用下沥青混合料永久变形的力学模型.然后根据3种沥青混合料的室内重复荷载永久变形试验结果, 对该模型进行了验证.结果表明:随着荷载作用次数的增加, 残余粘弹性应变占永久应变的比例先迅速衰减, 而后逐渐趋向稳定, 一般仅占2%~3%.荷载间歇时间越长, 残余粘弹性应变越小.实际行车荷载的间歇时间足够长, 因此残余粘弹性应变可以忽略, 从而得到了简化模型.该模型可以很好地描述重复荷载下沥青混合料的永久变形特性.

References:

[1] Shen Jin’an. Road performance of asphalt and asphalt mixture [M]. Beijing: China Communications Press, 2001.(in Chinese)
[2] Deng Xuejun, Huang Xiaoming. Principles and design methods of pavement [M]. Beijing: China Communications Press, 2001.(in Chinese)
[3] Zhang Xiaoning. Viscoelastic mechanics principles and application of asphalt and asphalt mixture [M]. Beijing: China Communications Press, 2006.(in Chinese)
[4] Sides A, Uzan J, Perl M. A comprehensive viscoelasto-plastic characterization of sand asphalt compressive and tensile cyclic loading [J]. Test Evaluate, 1985, 13(1): 49-56.
[5] Witczak M W, Kaloush K, Pellinen T. Simple performance test for superpave mix design [C]//Proceedings of the 80th Annual Meeting of the Transportation Research Board. Washington, DC, 2001: 1-18.
[6] Huang Xiaoming, Zhang Jiupeng, Li Hui. Development of a mechanics model for three-phase permanent deformation of asphalt mixture under repeated load[C]//Proceedings of the 80th Annual Meeting of the Transportation Research Board. Washington, DC, 2008: 1-14.
[7] Zhang Jiupeng, Huang Xiaoming, Li Hui. Research on permanent deformation of asphalt mixture under repeated load[J]. Journal of Southeast University: Natural Science Edition, 2008, 38(3): 511-515.(in Chinese)
[8] Wang Hou-Yu. A practical creep compliance model of asphalt mixtures and its application [J]. Acta Mechanica Solida Sinica, 2002, 32(2): 232-236.
[9] Judycki J. Nonlinear viscoelastic behavior of conventional and modified asphaltic concrete under creep [J]. Mater Struct, 1992, 25(1): 95-101.

Memo

Memo:
Biography: Zhang Jiupeng(1983—), male, doctor, lecturer, zhjiupeng@163.com.
Foundation items: The National Natural Science Foundation of China(No.50608006), Program for New Century Excellent Talents in University(No.NCET-07-0120).
Citation: Zhang Jiupeng, Huang Xiaoming. Viscoelastic model for asphalt mixture under repeated haversine load[J]. Journal of Southeast University(English Edition), 2009, 25(4): 523-526.
Last Update: 2009-12-20