Numerical Simulation of Dynamic Soil-pile Interaction for Dry Condition Observed in Centrifuge Test

원심모형실험에서 관측된 건조 지반-말뚝 동적 상호작용의 수치 모델링

Kown, Sun-Yong;Kim, Seok-Jung;Yoo, Min-Taek

  • Received : 2016.01.19
  • Accepted : 2016.03.10
  • Published : 2016.04.29


Numerical simulation of dynamic soil-pile-structure interaction embedded in a dry sand was carried out. 3D model of the dynamic centrifuge model tests was formulated in a time domain to consider nonlinear behavior of soil using the finite difference method program, FLAC3D. As a modeling methodology, Mohr-Coulomb criteria was adopted as soil constitutive model. Soil nonlinearity was considered by adopting the hysteretic damping model, and an interface model which can simulate separation and slip between soil and pile was adopted. Simplified continuum modeling (Kim et al., 2012) was used as boundary condition to reduce analysis time. Calibration process for numerical modeling results and test results was performed through the parametric study. Verification process was then performed by comparing numerical modeling results with another test results. Based on the calibration and validation procedure, it is identified that proposed modeling method can properly simulate dynamic behavior of soil-pile system in dry condition.


Numerical simulation;Centrifuge model test;Finite difference method;Dynamic soil-pile interaction


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Supported by : 한국철도기술연구원