Parametric Study on Displacement of Earth Retaining Wall by the Bermed Excavation Using Back Analysis

역해석을 통한 소단굴착에 따른 흙막이 벽체변위의 매개변수 연구

  • Received : 2015.09.30
  • Accepted : 2015.10.26
  • Published : 2015.12.30


Together with the wall stiffness, a berm has the role of deciding the stability of a temporary retaining wall before structure installation after excavation. Especially in case of loose or soft soil excavated ground, the role of berm is very important. In this study, the measurement data obtained from the temporary retaining wall in the bermed excavation site in urban and numerical analysis are used to investigate the effects of berm's dimension (width and slope), excavation depth and ground property on the maximum horizontal displacement of the temporary retaining wall. The measurement data indicated that the wall displacement varied to the berm's width. That is, as the berm width decreased, the wall displacement increased. As a result of numerical analyses, the maximum wall displacement increased as slope increased and berm width decreased. This means that the berm is effectively restrained to the wall displacement. As excavation depth increased, the effect of berm's slope and width increased. In case of the same berm condition, the wall displacement restrained as ground property increased.


Berm;excavation;temporary retaining wall;maximum lateral displacement;soil property


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