Abstract: The corner effect of a deep excavation supported by the soldier pile and ground anchor system as well as factors that impact the this effect are evaluated by the commercial finite difference analysis software FLAC3D. The spatial distribution of the deformation due to the excavation is evaluated and the influence of the corner effect can be quantified. The corner effect coefficient is therefore obtained and the deformation prediction method that considering the corner effect is proposed and verified by the excavation monitoring data.

Key words: Soldier Pile and Ground Anchor Supporting System; , Three Dimension Finite Difference Analysis, Corner Effect, Spatial Effect