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LERAT, P; FABRE, C; BALAY, JM (2003)
Languages: English
Types: Conference object
Subjects:
The paper describes several experimentations on rigid pavements at Toulouse Blagnac airport, tested with heavy aircraft landing gear simulator developed by Airbus S.A.S. The main contributors of this program are Airbus, the French Civil Aviation Administration (STBA) and the French Road and Bridges Laboratory (LCPC). The first part of the program (1998 2000) deals with bituminous pavement. In 2001-2002-2003 the program has focused on Rigid tests. The main aim has been therefore to improve the understanding of the stresses applied to a cement concrete pavement, under aeronautical loads, in order to underscore the influence of the loading parameters (thermal and dynamic) and of the pavement design parameters. The two main targets are to provide comparative experimental data between different aircraft landing gears, considering especially the future Airbus A380, and to provide full-scale data towards a better understanding of rigid pavement behaviour in order to contribute to the research program for renewing airport pavement design methods started in 1999 by both STBA and LCPC. There are two different experimentations : The rigid static test campaign are to be located chronologically within the A380 runway loading Experimental Programme. The configuration of the A380 landing gear was fixed on completion of the flexible tests and the load simulation principle by the aircraft scale simulator is validated. The static test principle consisted in varying the load parameters one by one. These parameters are mainly the load applied (load at wheel, pressure of loaded tyres), the geometrical configuration of the landing gears (wheel-track, wheel-base, type of bogie) under a given thermal load. These results are then to be related with the parameters of the pavement used (doweled, slab dimensions, type of foundation, base ground, etc. At the outcome, we will be able to single out the effect of the track, base, load, bogie nteraction, wheel effect etc. on the stresses applied to an aeronautical-type pavement. The fatigue test principle consists in comparing damage for the B777-300ER and the A380-800F on each runway section, up to failure.
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