A Comparison between a Shakedown Design Approach and the Analytical Design Approach in the UK for Flexible Road Pavements

摘要: Recently a shakedown approach has been proposed for structural design of flexible road pavements (Wang and Yu, 2013a). This new makes use both elastic plastic properties materials, therefore represents an advance from the existing analytical in UK where pavement life is related with strains at critical locations using empirical equations. However, no direct comparison between designs these two approaches made to date. In this paper, following brief review approaches, based on Wang Yu (2013a) used layer thicknesses typical asphalt considered TRRL Report LR1132. Typical values parameters are chosen materials temperature 20°C, while stiffness moduli kept identical design. The resulting then compared thickness chart approach. And influence shakedown-based also discussed detail. It found that if conducted against maximum wheel pressure relatively high temperature, structure will probably not fail due excessive rutting within service life.