Analysis of Continuous Wall's Lateral Displacement in Underground Deep Foundation Pit

Through the testing data of a deep excavation,this paper analyzes systematically the deformation law of the wall.This paper shows that the lateral displacement of the wall increases with the increase of the excavation depth,and the growth rate is proportional to the excavation rate during the process of deep excavation.This paper also shows that the horizontal displacement is smaller in the corner of foundation pit,and the horizontal displacement gradually increases,and then reaches its maximum in the central section of pit.Meanwhile this paper shows that the corner space effect of foundation pit makes impacts on the short side wall significantly and the short side wall has less deformation during the process of deep excavation.Finally this paper shows that the maximum displacement of the wall emerges about half way to excavation depth,rather than at the vicinity of bottom of pit under reverse building method.