This paper details the recalibration of the computer program, APSDS 5.0 (Aircraft Pavement Structural Design System) to take account of the new test data. To accurately reflect the performance of the test pavements, separate calibrations have been developed for 1, 2, 4 and 6-wheel configurations. Structural pavement thicknesses determined by APSDS 5.0 are significantly less than those obtained using the design software FAARFIELD developed in the USA.Ĭorrelation between design outputs and the calibration data is significantly better than achieved by previous calibrations that did not treat the different configurations separately. Possible reasons for the difference are discussed.Īdvanced Design Of Flexible Aircraft Pavements. CIRCLY and Mechanistic Pavement Design: The Past, Present and Towards the Future. It has been about 30 years since CIRCLY, originally a FORTRAN program for analyzing Layered Elastic Media subject to surface loads, was released by CSIRO. This paper gives an overview of how CIRCLY has evolved over these 30 years – from the first mainframe version, to the current user-friendly Windows based, version 5.0 as the standard pavement design package used in 35 countries. #Army corps of engineers flexible pavement design software windows# The development of CIRCLY has closely tracked the evolution of the Austroads mechanistic flexible pavement design procedure. CIRCLY is unique amongst commercial software as it handles cross-anisotropic properties as required by the Austroads procedure. CIRCLY also automates many requirements of the Austroads procedure such as sublayering of unbound granular layers. APSDS (Airport Pavement Structural Design System) for airport pavements, used for airports world wide such as Frankfurt Airport and Amsterdam’s Schipol Airport.The capabilities of the two special versions of CIRCLY are also discussed: A unique Parametric Analysis feature can fine-tune layer thicknesses to minimize pavement costs. HIPAVE (Heavy Industrial PAVEment) for pavements in intermodal container terminals such as the Crawford Street Freight Village in New Zealand.Airbus Industrie has used it to design landing gears for new aircraft models, including the A380. Some predictions are made about the future of the mechanistic pavement design procedure.ĬIRCLY and Mechanistic Pavement Design: The Past, Present and Towards the Future – Leigh Wardle (2010) HIPAVE – A Tool To Assist In The Mechanistic Empirical Design Of Heavy Duty Industrial Flexible Pavements. 10th International Conference on Asphalt Pavements (ISAP), Quebec, Canada, August. The HIPAVE (Heavy Industrial PAVEment) layered elastic software program conveniently models the effects of detailed payload distributions (spectrum of container weights) by calculating axle loads from vehicle configurations and payloads, also with provision for vehicle wander. #Army corps of engineers flexible pavement design software software# HIPAVE handles the variety of equipment used in container facilities, such as forklifts, straddle carriers, gantry cranes and side loaders. The library of vehicle properties can be automatically updated from the HIPAVE webserver. The HIPAVE package is designed to enable the user to modify any of the design assumptions to reflect empirical observations. The authors caution against the imprudent implementation of design assumptions derived from highway research into industrial pavement designs. Industrial pavements are typically subjected to loading of an order of magnitude greater, making it necessary, for example, to use a different subgrade performance model. #Army corps of engineers flexible pavement design software windows#.#Army corps of engineers flexible pavement design software software#.
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