Abstract
Shakedown theory provides a rational tool for prediction of the long-term plastic behavior of pavement subjected to variable or repeated loads. A dynamic lower-bound shakedown solution has been proposed to estimate the critical shakedown limit load, over which plastic collapse or excessive permanent deformation of the pavement takes place. However, dynamic effects on the shakedown limit remains unexplored, particularly when rolling and sliding contact between vehicle and pavement are involved. In this paper, a finite-infinite (FE-IF) dynamic numerical method is presented to calculate the dynamic elastic stresses resulting from rolling and sliding contact at different moving speed for computing the shakedown limit. It is found that the shakedown limit decreases with the increasing moving speed initially and then turns to increase when the moving speed exceeds the Rayleigh wave speed of the pavement system. This dynamic effect is more profound as the horizontal force component reduces. The influence of frictional coefficient on shakedown limit is also discussed.
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Dai, Y., Qian, J., Gu, X., Huang, M. (2018). Dynamic Shakedown of Cohesive-Frictional Materials Under Moving Traffic Load. In: Wu, W., Yu, HS. (eds) Proceedings of China-Europe Conference on Geotechnical Engineering. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-97115-5_175
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DOI: https://doi.org/10.1007/978-3-319-97115-5_175
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