Structural Evaluation of Airfield Pavement Using Finite Element Analysis Based Methodology
Authors: Richard Ji
Nondestructive deflection testing has been accepted widely as a cost-effective tool for evaluating the structural condition of airfield pavements. Backcalculation of pavement layer moduli can be used to characterize the pavement existing condition in order to compute the load bearing capacity of pavement. This paper presents an improved best-fit backcalculation methodology based on deflection predictions obtained using finite element method (FEM). The best-fit approach is based on minimizing the squared error between falling weight deflectometer (FWD) measured deflections and FEM predicted deflections. Then, concrete elastic modulus and modulus of subgrade reaction were back-calculated using Heavy Weight Deflectometer (HWD) deflections collected at the National Airport Pavement Testing Facility (NAPTF) test site. It is an alternative and more versatile method in considering concrete slab geometry and HWD testing locations compared to methods currently available.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1474668Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 291
 FAA. (2016). Advisory Circular 150/5320-6F, Airport Pavement Design and Evaluation, 2016.
 M. I. Darter, K. T. Hall, and C. Kuo, Support Under Portland Cement Concrete Pavements. NCHRP Report 372. Washington, DC: National Cooperative Highway Research Program, 1995.
 M. Ioannides, M. R. Thompson, and E. J. Barenberg,” Dimensional Analysis in NDT Rigid Pavement Evaluation” Jouranl of Transportation Engineering, vol. 116 no. 1 pp. 23–35,1990.
 S. Li, T. F. Fwa, K. H. Tan,” Back-Calculation of Parameters for Slab on Two-layer Foundation System”, Journal of Transportation Engineering, vol 123, no.6, 484–488, 1997.
 American Association of State Highway, Transportation Officials. AASHTO Guide for Design of Pavement Structures. Washington, D. C. AASHTO, 1993.
 A. M. Loannides, E. J. Barenberg, J. A. Lary. Interpretation of Falling Weight Deflectometer Results Using Principle of Dimensional Analysis. Proceedings 4th Conference on Concrete Pavement Design and Rehabilitation, Purdue University, West Lafayette, Indiana, pp. 231–247, 1989.
 American Association of State Highway, Transportation Officials. Supplement to the AASHTO guide for design of pavement structures. Part II, Rigid pavement design & rigid pavement joint design. Washington, D. C. AASHTO, 1998.
 A. M. Tabatabaie-Raissi, ”Structural Analysis of Concrete Pavement Joints”, Ph.D. dissertation, Urbana, IL: University of Illinois, 1978.
 K. Chatti, J. Lysmer and C. L. Monismith, “Dynamic Finit-element Analysis of Jointed Concrete Pavements”, Transportation Research Record 1449, TRB, National Research Council, Washington D C, pp. 79–90, 1991.
 Y. K. Cheung, O. Z. Zienkiewicz. “Plates and Tanks on Elastic Foundations-An Application of Finite Element Method”, Int. J. Solids and structures, Vol 1, pp. 451–461, 1965.
 Harichandran, R. S., T. Mahmood, A. R. Raab, and G. Y. Baladi. “Modified Newton Algorithm for Backcalculation of Pavement Layer Properties”, Transportation Research Record 1384, TRB, National ResearchCouncil, Washington, D.C., pp. 15–22, 1993.
 K. Chatti, Y. Ji, Ronald S. Harichandran, “Dynamic Time Domain Backcalculation of Layer Complex Moduli and Thicknesses in Asphalt Concrete Pavements”, 83th Annual Meeting of Transportation Research Board, Washington D. C. pp. 106–116, 2004.
 H. M. Westergaard, “New Formulas for Stresses in Concrete Pavements of Airfields,” Transactions, American Society of Civil Engineers, Vol. 113, pp. 425–444, 1948.
 Ioannides M., M. R. Thompson, and E. J. Barenberg. Westergaard's Solutions Reconsidered. In Transportation Research Record 1043, TRB, National Research Council, Washington, D.C., 1985.
 J. Larralde, “Structure Analysis of Rigid Pavement with Pumping”, PhD Dissertation, Purdue University, West Lafayette, IN, pp. 61–63, 1984.
 L. Khazanovich, S. D. Tayabji, and I. D. Michael, “Backcalculation of Layer Parameters for LTPP Test Sections”, Volume I: Slab on Elastic Solid and Slab on Dense-Liquid Foundation Analysis of Rigid Pavements FHWA-RD-00-086, 1998.