A new configuration of the F-15 aircraft is being used by the U.S. Air Force. This heavyweight F-15 has a 30-kip/355-psi wheel loading. The F-15 will become the controlling aircraft for design of airfield Light-Load Pavements. A review is presented of the concepts and development of the present Department of Defense (DOD) method for flexible airfield pavement design. The structural model used in this study to calculate pavement structural responses (stresses, strains, deflections) is the finite element program ILLI-PAVE. This program considers the pavement as an axisymmetric solid, and accommodates stress-dependent materials and soils, and stress corrections according to Mohr-Coulomb failure criteria. Multiple regression analyses are performed on the ILLI-PAVE data base to develop prediction equations (algorithms) for pavement structural responses of interest. These equations have high statistical precision when compared against the ILLI-PAVE data base. Therefore, they may be used in lieu of running ILLI-PAVE, which generally requires a main-frame computer. Pavement test section data obtained from the literature are analyzed using ILLI-PAVE. Transfer functions are derived relating calculated pavement responses to coverages till failure.
Development of Mechanistic Flexible Pavement Design Concepts for the Heavyweight F-15 Aircraft
1986
232 pages
Report
No indication
English
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