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<p>Platform Screen Doors (PSDs) are essential safety facilities in urban railways, preventing passenger accidents and improving station environments. However, current testing standards oversimplify wind pressure loads, raising concerns about structural reliability. This study presents a finite element (FE) analysis as a preliminary step for designing a PSD structural test rig. The analysis examined the substitution of distributed wind pressure with equivalent point loads, focusing on the effects of load-point number, spatial distribution, and positional perturbations. Results showed that point-load substitution yields slightly conservative responses compared to distributed loading, with increasing load points converging toward the reference pressure case. Load spacing and perturbation analyses further revealed significant sensitivity of deflection and stress, particularly at the door center and bottom frame. These findings demonstrate the feasibility of point-load substitution for reproducing wind pressure effects and provide fundamental insights for the design of reliable PSD structural test rigs and improved testing standards.</p>

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Numerical Study on Point-Load Substitution of Wind Pressure for the Structural Test Rig Design of Platform Screen Doors

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • Hong-Lae Jang,
  • Sungho Yun,
  • Jai-Kyun Mok,
  • Hyeonguk Mun,
  • Yongseok Kim

摘要

Platform Screen Doors (PSDs) are essential safety facilities in urban railways, preventing passenger accidents and improving station environments. However, current testing standards oversimplify wind pressure loads, raising concerns about structural reliability. This study presents a finite element (FE) analysis as a preliminary step for designing a PSD structural test rig. The analysis examined the substitution of distributed wind pressure with equivalent point loads, focusing on the effects of load-point number, spatial distribution, and positional perturbations. Results showed that point-load substitution yields slightly conservative responses compared to distributed loading, with increasing load points converging toward the reference pressure case. Load spacing and perturbation analyses further revealed significant sensitivity of deflection and stress, particularly at the door center and bottom frame. These findings demonstrate the feasibility of point-load substitution for reproducing wind pressure effects and provide fundamental insights for the design of reliable PSD structural test rigs and improved testing standards.