Effect of roughness-induced dynamic wheel loading on flexible pavements

Cardenas Huaman, Johann Jhanpiere

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https://hdl.handle.net/2142/120594 Copy

Description

Title

Effect of roughness-induced dynamic wheel loading on flexible pavements

Author(s)

Cardenas Huaman, Johann Jhanpiere

Issue Date

2023-05-05

Director of Research (if dissertation) or Advisor (if thesis)

Al-Qadi, Imad L

Department of Study

Civil & Environmental Eng

Discipline

Civil Engineering

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

Dynamic Wheel Loading, Numerical Analysis, Flexible Pavements, Road Roughness, Pavement Modeling, Pavement Mechanics, Rolling Conditions

Abstract

The deterioration of the US transportation highway network and the onset of new technologies in the freight industry are expected to cause changes in the axle load magnitude and distribution, which would further exacerbate their effects. In this study, a decoupled vehicle–tire–pavement interaction model was used to establish a mechanistic framework to predict critical pavement responses. The response to roughness-induced dynamic wheel load amplification and non-free rolling condition contact stresses were considered, which usually overlooked. State-of-the-art numerical models were used to account for pavement unevenness, vehicle dynamics, three-dimensional and non-uniform contact stresses, and the complex pavement material characteristics. The performed numerical simulations provided a means to analytically quantify the variation of vertical and in-plane contact stress distribution. That allowed the consideration of full braking and acceleration scenarios. Hence, changes in strain field distribution and peak values for typical pavement structures under various axle configurations and axle loads were determined. Critical pavement responses, longitudinal and transverse tensile strains at the bottom of the asphalt concrete layer and shear strain in the asphalt concrete layer, were found to be highly depended on the in-plane components of the contact stress distribution. Overlooking load amplification due to road roughness and impact of rolling conditions would results in unpredicting pavement distresses, such as bottom-up fatigue cracking, near-surface cracking, and rutting.

Graduation Semester

2023-05

Type of Resource

Thesis

Copyright and License Information

Copyright 2023 Johann Cardenas Huaman

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