Scholarlink

<p>The dynamic interaction between aircraft and rigid airport pavements governs slab response, joint performance, and fatigue behaviour. However, most existing studies rely on simplified vehicle models, quasi-static assumptions, or one-dimensional (1D) foundation representations, limiting their ability to capture coupled dynamic effects. This study develops a two-dimensional (2D) finite element method (FEM) framework for analysing jointed plain concrete pavement (JPCP) on a Pasternak foundation under moving Boeing 747 loading. The model explicitly incorporates coupled vehicle pavement interaction (VPI), joint load transfer, and stochastic surface irregularity, modelled using an International Organization for Standardization (ISO) based power spectral density (PSD) approach. Pavement slabs are represented using Mindlin plate elements with equivalent dowel stiffness, while the aircraft is modelled as an 8 degree-of-freedom (DOF) system. The coupled equations are solved in the time domain using the Newmark-β method. Model validation is performed against full-scale FAA NAPTF CC8 experimental data and a benchmark dynamic VPI problem, with deviations within 3–4%. Results show that dynamic amplification effects, not captured by static or Winkler-based models, significantly influence pavement response. Surface irregularity is the dominant factor, increasing deflection by up to 98% and the dynamic load factor (DLF) to 2.55 under very poor conditions (ISO PSD classification). Joint stiffness degradation increases tensile stress by 12–15% due to reduced load transfer efficiency. The proposed model provides an efficient framework for evaluating global pavement response; however, localized three-dimensional (3D) effects are not explicitly captured.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on dynamic response of jointed rigid airport pavements under coupled aircraft loading using a two-dimensional finite element framework

  • 期刊论文

  • 发表日期：

    2026年6月15日

查看全文
  • Khair Ul Faisal Wani,
  • Abhishek Sharma,
  • Virajan Verma,
  • K. Nallasivam,
  • Karan Singh,
  • Maloth Naresh

摘要

The dynamic interaction between aircraft and rigid airport pavements governs slab response, joint performance, and fatigue behaviour. However, most existing studies rely on simplified vehicle models, quasi-static assumptions, or one-dimensional (1D) foundation representations, limiting their ability to capture coupled dynamic effects. This study develops a two-dimensional (2D) finite element method (FEM) framework for analysing jointed plain concrete pavement (JPCP) on a Pasternak foundation under moving Boeing 747 loading. The model explicitly incorporates coupled vehicle pavement interaction (VPI), joint load transfer, and stochastic surface irregularity, modelled using an International Organization for Standardization (ISO) based power spectral density (PSD) approach. Pavement slabs are represented using Mindlin plate elements with equivalent dowel stiffness, while the aircraft is modelled as an 8 degree-of-freedom (DOF) system. The coupled equations are solved in the time domain using the Newmark-β method. Model validation is performed against full-scale FAA NAPTF CC8 experimental data and a benchmark dynamic VPI problem, with deviations within 3–4%. Results show that dynamic amplification effects, not captured by static or Winkler-based models, significantly influence pavement response. Surface irregularity is the dominant factor, increasing deflection by up to 98% and the dynamic load factor (DLF) to 2.55 under very poor conditions (ISO PSD classification). Joint stiffness degradation increases tensile stress by 12–15% due to reduced load transfer efficiency. The proposed model provides an efficient framework for evaluating global pavement response; however, localized three-dimensional (3D) effects are not explicitly captured.