열차하중을 받는 보강토 옹벽의 수치해석

The paper presents the procedures and results of the numerical modelling that was carried out to investigate the stability of reinforced earth wall under dynamic railway load. The two-dimensional explicit dynamic finite element method (ABAQUS) was used to carry out the numerical analyses. To simulate the railway load, the top surface of the backfill soil was excited by the uniform distributed load whose frequency and magnitude was estimated by the measured railway acceleration during train passing. The wall displacements and geogrid axial forces were analyzed to evaluate the stability of reinforced earth wall under the dynamic train load.