Finite Element Analysis of the Properties of the Supporting Structure of T-type Underground Diaphragm Wall of Soft Soil Deep Foundation Pit

摘要

The supporting structure of T-type underground diaphragm wall has been applied in the deep foundation pit in the area sensitive to the environment.However, there is very little research on its mechanism and effectiveness.With 3D finite element analysis software, the thin section model of the deep foundation pit that uses T-type underground diaphragm wall as the supporting structure has been established, and the laws of development and distribution of horizontal deformation of T-type underground diaphragm wall, lateral deformation of the foundation behind the wall and ground subsidence during the excavation process of the deep foundation pit have been analyzed in a fairly systematic manner.With parameters, effects of such factors as the geometrical size of T-type underground diaphragm wall (including thickness of the I-type wall breadth of the diaphragm wall, length of T-type breadth wing) and so on have been analyzed and researched.In addition, it has conducted comparison with the ordinary I-type wall supporting structure, and it can provide reference for optimized design and engineering application of such supporting structure.