A Study on the Rational Application of 3D Numerical Analysis for Anchored Earth Retaining Wall

앵커지지 흙막이 벽체의 합리적인 3차원 수치해석기법 적용에 관한 연구

Jeong, Sang-Seom;Sim, Jae-Uk;Lee, Sung-June

  • Received : 2016.02.01
  • Accepted : 2016.03.28
  • Published : 2016.04.29


This paper presents the results of 2D and 3D finite element simulations conducted to analyze the effects of excavation depth (H), excavation width (L), and ground condition on the behavior of anchored earth retaining wall in inclined ground layers. The results of numerical analyses are compared with those of the site instrumentation analyses. Based on the results obtained, it appeared that 2D numerical analysis tends to overestimate the horizontal displacement of retaining wall compared to the 3D numerical analysis. When the excavation depth is deeper than 20m, it is found that 2D and 3D numerical analysis results of excavation work in soil ground condition are more different from the results in rock ground condition. For an accurate 3D numerical analysis, applying 3D mesh which has an excavation width twice longer than excavation depth is recommended. Consequently, 3D numerical analysis may be able to offer significantly better predictions of movement than 2D analysis.


Anchored earth retaining wall;Inclined ground;2D FE analysis;3D FE Analysis


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