Numerical simulation of failure mechanism of deep foundation pits in soft soil considering impact of piles

Based on the numerical simulation technique and 5 groups of model calculations, the impacts of uplift of wall depth, soil characteristics of wall toe, pit width and pit piles on stability are studied. The results show that the wall depth, soil characteristics of wall toe, pit width and piles within potential slip surface have significant impacts on the stability of the pit. Further, the slip surface shape and location characteristics of deep soft soil pit are studied as well as their influencing factors. Finally, the uplift failure mechanism of deep soft soil foundation pits is obtained.