[1] Cui Xinzhuang, Jin Qing, Shang Qingsen, Zhai Jiguang, et al. Numerical simulation of dynamic pore pressurein asphalt pavement [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 79-82. [doi:10.3969/j.issn.1003-7985.2009.01.017]

Copy

Numerical simulation of dynamic pore pressurein asphalt pavement()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 1

Page:

79-82

Research Field:

Civil Engineering

Publishing date:

2009-03-30

Info

Title:

Numerical simulation of dynamic pore pressurein asphalt pavement

Author(s):

Cui Xinzhuang¹;  Jin Qing¹;  Shang Qingsen¹;  Zhai Jiguang²

¹School of Civil Engineering, Shandong University, Jinan 250061, China
²Haihe Valley Administration Bureau of Shandong Province, Jinan 250100, China

Keywords:

road engineering;  asphalt pavement;  moisture damage;  dynamic pore pressure;  seepage force;  dynamic deflection

PACS:

TU473.2

DOI:

10.3969/j.issn.1003-7985.2009.01.017

Abstract:

For studying the driving role of dynamic pressure in water-induced damage of asphalt pavement, based on the fast Lagrangian finite difference method and Biot dynamic consolidation theory, fluid-solid coupling analysis of the pavement is conducted considering asphalt mixtures as porous media.Results reveal that the development and dissipation of the dynamic pore pressure are coinstantaneous and this makes both the positive and negative dynamic pore pressure and seepage force alternate with time.Repetitive hydrodynamic pumping and sucking during moisture damage is proved.The dynamic pore pressure increases with vehicle velocity.Effective stress and deflection of pavement decrease due to the dynamic pore water pressure.However, the emulsification and replacement of the asphalt membrane by water are accelerated.The maximum dynamic pore pressure occurs at the bottom of the surface course.So it is suggested that a drain course should be set up to change the draining condition from single-sided drain to a two-sided drain, and thus moisture damage can be effectively limited.

References:

[1] Kandhal P S.Field and laboratory investigation of stripping in asphalt pavements:state of the art report [J].Transportation Research Record, 1994, 80(1454):36-47.
[2] Mallick R B, Pelland R, Hugo F.Use of accelerated loading equipment for determination of long term moisture susceptibility of hot mix asphalt [J].Int J Pavement Eng, 2005, 6(2):125-136.
[3] Chen J S, Lin K Y, Young S Y.Effects of crack width and permeability on moisture-induced damage of pavements [J].J Mater Civil Eng, 2004, 16(3):276-281.
[4] Masad E, Birgisson B, Al-Omari A, et al.Analytical derivation of permeability and numerical simulation of fluid flow in hot-mix asphalt [J].Journal of Materials in Civil Engineering, 2004, 16(5):487-496.
[5] Liu Pu, Ling Hongwei, Han Ji.Measurement of pore water pressure in asphalt pavement [J].Shanghai Highway, 2002, 10(4):20-22.(in Chinese)
[6] Muhammed E K.Modeling moisture transportation in asphalt pavements [D].Maryland:Department of Civil and Environmental Engineering of University of Maryland, 2005.
[7] Al-Omari A, Masad E.Three dimensional simulation of fluid flow in X-ray CT images of porous media [J].Int J Numer Anal Meth Geomech, 2004, 28(13):1327-1360.
[8] Kettil P, Engström G, Wiberg N E.Coupled hydro-mechanical wave propagation in road structures [J].Computers and Structures, 2005, 83(21):1719-1729.
[9] Huang Y H.Pavement analysis and design [M].Delhi:Pearson Education, 1993:50-51.
[10] Lysmer J, Kuhlemeyer R L.Finite dynamic model for infinite media [J].Journal of Engineering Mechanics, 1969, 95(2):859-877.

Memo

Memo:

Biography: Cui Xinzhuang(1974—), male, doctor, associate professor, cuixz@sdu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.50708056), Reward Fund for Excellent Young and Middle-Aged Scientists of Shandong Province(No.2008BS09015), the Natural Science Foundation of Shandong Province(No.Q2006F02), Key Technologies R& D Program of Shandong Province(No.2008GG10006009).
Citation: Cui Xinzhuang, Jin Qing, Shang Qingsen, et al.Numerical simulation of dynamic pore pressure in asphalt pavement[J].Journal of Southeast University(English Edition), 2009, 25(1):79-82.

Common functions