Abstract：
Based on numerical analysis by MIDAS/GTS, the influence of different aspect ratio and different excavation working condition on foundation pit deformation has been investigated. The results show that, When L/B is less than 2，entire long side of the foundation is effected by spatial effect. When L/B is greater than 2, there is no obvious different between 3D and 2D in the area from angle of the foundation pit more than double width, and the vale tends to stable. The bottom uplifts of excavation is enhanced with the increase of distance when the distance is less than the 1/2 width, and the bottom uplifts of excavation tends to a stable vale when the distance is greater than the 1/2 width. The depth of excavation is a significant element for spatial effect, and the spatial effect is enhanced with the increase of depth.
JIANG Xi-yan,ZHANG Lei-gang,REN Xiao-liang. research of spatial effect for excavation of cantilever retaining structure by MIDAS/GTS[J]. Architecture Technology, 2017, 48(9): 1002-.
