3D FE analysis of urban asphalt pavements on public transport roads under a rolling bus tyre
DOI:
https://doi.org/10.58922/transportes.v33.e3111Keywords:
Dynamic analyses. Flexible pavements. Acceleration and braking. Longitudinal grade. Finite elements.Abstract
Understanding the structural mechanisms at which the asphaltic pavements are subjected in the field can prevent premature failure. In this work, dynamic and static 3D finite element analyses were performed and compared among themselves to evaluate their effects in terms of constant speed, acceleration, braking, roughness and longitudinal slopes of the roadway. Numerical analysis is a non-destructive research method which allows access to the response at any internal point of the pavement in a more economic and sustainable way. A common urban pavement section was chosen for the analyses as being representative of passenger transportation routes in Curitiba – Brazil. A standard bus was considered for the analyses and the parameters simulated diverse and usual traffic and service conditions. According to this analysis, acceleration in downward slopes represents the most critical situation for the pavement under study, reaching values up to 24 times greater than those in the static condition.
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