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<p>This paper presents a verified two-dimensional finite element framework for analysing the structural behaviour of jointed plain concrete pavements (JPCPs) resting on a Pasternak elastic foundation and subjected to realistic aircraft loading. Unlike conventional pavement models that neglect joint mechanics or subgrade shear interaction, the proposed formulation explicitly incorporates dowel and tie bar stiffness and represents soil–structure interaction using a two-parameter foundation model. The pavement slab is modelled using Mindlin–Reissner plate theory with four-noded quadrilateral elements possessing six degrees of freedom per node, and the formulation is implemented in MATLAB to retain full transparency and flexibility in modelling and numerical control. Realistic multi-wheel surface pressures corresponding to the Airbus A380-800 landing gear configuration are applied to simulate critical operational loading conditions. Model accuracy is verified through mesh convergence analysis and comparison with established analytical solutions, yielding errors below 2%. The numerical results reveal that the combined effects of joint stiffness and Pasternak shear coupling produce a nonlinear redistribution of internal forces across slab interfaces, significantly modifying bending–shear–torsion interaction compared to Winkler-based or joint-free formulations. In particular, the shear layer suppresses bending-dominated response while amplifying localized torsional and shear demands near joints under eccentric aircraft loading, with torsional response increasing by more than 120% relative to symmetric loading. These findings provide new mechanistic insight into jointed pavement behaviour under complex aircraft loads and demonstrate the necessity of advanced soil–joint modelling for performance-based design, assessment, and long-term resilience of airport pavements within the built environment.</p>

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Structural performance of jointed plain concrete airport pavements on pasternak foundation: a 2D FEM study under aircraft loading

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Khair Ul Faisal Wani,
  • Abhishek Sharma,
  • Virajan Verma,
  • Nallasivam K

摘要

This paper presents a verified two-dimensional finite element framework for analysing the structural behaviour of jointed plain concrete pavements (JPCPs) resting on a Pasternak elastic foundation and subjected to realistic aircraft loading. Unlike conventional pavement models that neglect joint mechanics or subgrade shear interaction, the proposed formulation explicitly incorporates dowel and tie bar stiffness and represents soil–structure interaction using a two-parameter foundation model. The pavement slab is modelled using Mindlin–Reissner plate theory with four-noded quadrilateral elements possessing six degrees of freedom per node, and the formulation is implemented in MATLAB to retain full transparency and flexibility in modelling and numerical control. Realistic multi-wheel surface pressures corresponding to the Airbus A380-800 landing gear configuration are applied to simulate critical operational loading conditions. Model accuracy is verified through mesh convergence analysis and comparison with established analytical solutions, yielding errors below 2%. The numerical results reveal that the combined effects of joint stiffness and Pasternak shear coupling produce a nonlinear redistribution of internal forces across slab interfaces, significantly modifying bending–shear–torsion interaction compared to Winkler-based or joint-free formulations. In particular, the shear layer suppresses bending-dominated response while amplifying localized torsional and shear demands near joints under eccentric aircraft loading, with torsional response increasing by more than 120% relative to symmetric loading. These findings provide new mechanistic insight into jointed pavement behaviour under complex aircraft loads and demonstrate the necessity of advanced soil–joint modelling for performance-based design, assessment, and long-term resilience of airport pavements within the built environment.