Geomechanics and Engineering

  • 제44권4호
  • /
  • Pages.513-527
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  • 2026
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Numerical simulations of seismic response of pile foundations in sand using 3D finite element methods

  • Yong-Gook Lee (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Muhammad Bilal Adeel (Department of Transportation and Geotechnical Engineering, National University of Sciences and Technology) ;
  • Duhee Park (Department of Civil and Environmental Engineering, Hanyang University)
  • 투고 : 2025.03.25
  • 심사 : 2026.02.19
  • 발행 : 2026.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

We evaluate the performance of the pseudo-static method by comparing 3D nonlinear finite element (FE) analyses of the pseudo-static approach and the dynamic simulation. The pseudo-static approach accounts only for the inertial interaction, neglecting kinematic interaction as well as the coupled axial and lateral response at the soil-pile interface. The 3D dynamic FE model is validated against centrifuge measurements, demonstrating that the employed nonlinear soil constitutive model accurately captures the recorded response. The p-y curve extracted from the dynamic analysis deviates significantly from that obtained in the pseudo-static analyses, resulting in a stiffer overall response. While using the p-y curve from the 3D pseudo-static FE model provides a better fit with the dynamic analysis results compared to the API curve, a 10-30% difference in peak bending moment remains. This study reveals that applying an amplification factor to stiffen the pseudo-static p-y curve improves prediction accuracy.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) (NRF-2022R1A2C3003245).

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