Finite-Element Modeling of Instrumented Flexible Pavements under Stationary Transient Loading
Publication: Journal of Transportation Engineering
Volume 135, Issue 2
Abstract
Results from a finite-element program developed in the commercial code Plaxis were compared to those from an instrumented thin flexible pavement containing multiple test sections. The model has performed reasonably well under the limited environmental conditions encountered to date. Horizontal strain in the longitudinal direction of the asphalt concrete, vertical pressure in the crushed stone, and vertical pressure in the compacted subgrade were measured for 2,100 passes of loaded single axle dump truck traffic to compare to the values calculated in the model. Necessary inputs were determined using a rigorous laboratory testing program, alongside field data from over 500 drops of a falling weight deflectometer. Key features of the finite-element model include stationary transient loading and nonlinear stress dependent characterization of the compacted subgrade and crushed stone. Highlights of the results include the model moderately overpredicted unbound layer stresses, while overpredicting asphalt strain in some cases and underpredicting it in other cases, Discussion of the full scale test section, project scope, finite-element model development, and the results have been included in the body of the paper.
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Acknowledgments
The writers would like to thank the Arkansas Highway and Transportation Department (AHTD), the University of Arkansas, and MIRAFI Construction Products for financial support.
References
Al-Khoury, R., Scarpas, A., Kasbergen, C., and Blaauwendraad, J. (2001). “Spectral element technique for efficient parameter identification of layered media. Part I: Forward calculation.” Int. J. Solids Struct., 38, 1605–1623.
Barksdale, R. D., Brown, S. F., and Chan, F. (1989). “Potential benefits of geosynthetics in flexible pavement systems.” National Cooperative Highway Research Program (NCHRP) Rep. No. 315, Transportation Research Board of the National Academics, Washington, D.C.
Bhutta, S. A. (1998). “Mechanistic-empirical pavement design procedure for geosynthetically stabilized flexible pavements.” Ph.D. thesis, Virginia Polytechnic Institute and State Univ., Blacksburg, Va.
Bodhinayake, B. C., and Hadi, M. (2003). “A design chart for the design of flexible pavements based on finite elements.” Proc., 21st ARRB and 11th REAAA Conf.
Brinkgreve, R. B. J., et al. (2002). “PLAXIS 2D—Version 8.” User’s manual, Balkema, Delft, The Netherlands.
Cancelli, P., Recalcati, P., and Shin, E. (2000). “Inchon International Airport: Subgrade reinforcement with geogrids.” Technical Document No. TDS005, Tenax Corp. Baltimore.
Chatti, K., and Yun, K. K. (1996). “SAPSI-M: Computer program for analyzing asphalt concrete pavements under moving arbitrary loads.” Transportation Research Record. 1539, Transportation Research Board, Washington, D.C., 88–95.
Cho, Y., McCullough, B. F., and Weissmann, J. (1996). “Considerations on finite-element method application in pavement structural analysis.” Transportation Research Record. 1539, Transportation Research Board, Washington, D.C., 96–101.
Duncan, J. M., and Chang, C. Y. (1970). “Nonlinear analysis of stress and strain in soils.” J. Soil Mech. and Found. Div., 96(5), 1629–1653.
Elseifi, M. A., and Al-Qadi, I. L. (2005). “Effectiveness of steel reinforcing nettings in combating fatigue cracking in new flexible pavement systems.” J. Transp. Eng., 131(1), 37–45.
Garg, N., Thompson, M. R., and Ramirez, F. M. (2000). “Unbound granular base modeling—Effects on conventional flexible pavement critical response.” Proc., 5th Int. Symp. on Unbound Aggregates in Roads, UNBAR5, 271–277.
Gonzalez, C. R. (1994). “Geogrid design criteria for flexible pavements and light aircraft.” Rep. No. GL-94, U.S. Army Corps of Engineers (USACE), Vicksburg, Miss.
Hall, K. D., and Elliott, R. P. (1992). “ROADHOG—A flexible pavement overlay design procedure.” Transportation Research Record. 1374, Transportation Research Board, Washington, D.C., 9–18.
Helwany, S., Dyer, J., and Leidy, J. (1998). “Finite-element analyses of flexible pavements.” J. Transp. Eng., 124(5), 491–499.
Hornych, P., Kazai, A., and Quibel, A. (2000). “Modeling a full scale experiment of two flexible pavement structures with unbound granular bases.” Proc., 5th Int. Symp. on Unbound Aggregates in Roads, UNBAR5, 359–367.
Konstantakos, D. C., Whittle, A. J., Regalado, C., and Scharner, B. (2005). “Control of ground movements for a multi-level-anchored diaphragm wall during excavation.” Plaxis Bulletin, Issue 17, 5–10.
Ling, H. I., and Liu, K. (2003). “Finite element studies of asphalt concrete pavement reinforced with geogrid.” J. Eng. Mech., 129(7), 801–811.
Loulizi, A., Al-Qadi, I. L., Lahouar, S., and Freeman, T. E. (2002). “Measurement of vertical compressive stress pulse in flexible pavements.” Transportation Research Record. 1816, Transportation Research Board, Washington, D.C., 125–136.
Miura, N., Sakai, A., Taesiri, Y., Yamanouchi, T., and Yasuhara, K. (1990). “Polymer grid reinforced pavement on soft clay grounds.” Geotext. Geomembr., 9(1), 99–123.
Park, H. M., Kim, Y. R., and Park, S. W. (2005). “Assessment of pavement layer condition with use of multiload-level falling weight deflectometer deflections.” Transportation Research Record. 1905, Transportation Research Board, Washington, D.C., 107–116.
Qiu, Y., Dennis, N. D., and Elliott, R. P. (2000). “Design criteria for permanent deformation of subgrade soils in flexible pavements for low volume roads.” Soils Found., 40(1), 1–10.
Rowe, P. W. (1962). “The stress-dilatancy relation for static equilibrium of an assembly of particles in contact.” Proc. R. Soc. London, Ser. A, 269, 500–527.
Saad, B., Mitri, H., and Poorooshasb, H. (2005). “Three-dimensional dynamic analysis of flexible conventional pavement foundation.” J. Transp. Eng., 131(6), 460–469.
Saad, B., Mitri, H., and Poorooshasb, H. (2006). “3D FE analysis of flexible pavement with geosynthetic reinforcement.” J. Transp. Eng., 132(5), 402–415.
Schweiger, H. F., and Peschl, G. M. (2005). “Application of the random set finite element method (RS-FEM) in geotechnics.” Plaxis Bulletin, Issue 17, 16–21.
Shen, W., and Kirkner, D. J. (2001). “Non-linear finite-element analysis to predict permanent deformations in pavement structures under moving loads.” Int. J. Pavement Eng., 2, 187–199.
Thompson, M. R. (1994). “ILLI-PAVE based thickness design concepts and practices for surface treatment pavements.” Proc., 4th In. Conf. on the Bearing Capacity of Roads and Airfields, Vol. 1, 507–526.
Timm, D., et al. (2006). “Phase II NCAT test track results.” Rep. No. 06-05, National Center for Asphalt Technology (NCAT), Auburn, Ala.
Tutumluer, E., Little, D. N., and Kim, S. (2003). “Validated model for predicting field performance of aggregate base courses.” Transportation Research Record. 1837, Transportation Research Board, Washington, D.C., 41–49.
Wathugala, G. W., Huang, B., and Pal, S. (1996). “Numerical simulation of geosynthetic-reinforced flexible pavements.” Transportation Research Record. 1537, Transportation Research Board, Washington, D.C., 58–65.
Welcher, R. M. (2004). “Effect of fines on the shear strength of unbound aggregate base course.” MS thesis, Univ. of Arkansas, Fayetteville, Ark.
White, T. D., Haddock, J. E., Hand, A. J. T., and Fang, H. (2002). “Contributions of pavement structural layers to rutting of hot mix asphalt pavements.” NCHRP Rep. No. 468, Transportation Research Board of the National Academics, Washington, D.C.
Zaghloul, S. M. (1993). “Non-linear dynamic analysis of flexible and rigid pavements.” Ph.D. thesis, Purdue Univ., West Lafayette, Ind.
Zaghloul, S. M., and White, T. D. (1993). “Use of a three-dimensional, dynamic finite element program for analysis of flexible pavement.” Transportation Research Record. 1388, Transportation Research Board, Washington, D.C., 60–69.
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© 2009 ASCE.
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Received: Mar 12, 2007
Accepted: Aug 20, 2008
Published online: Feb 1, 2009
Published in print: Feb 2009
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