Numerical Analysis of the Influence of Deep Foundation Pit Construction on Adjacent Subway Stations in Soft Soil Areas

Deep foundation pit construction adjacent to a subway station in soft soil area was numerically simulated with Midas GTS NX calculation software. The influence of the deep on deformation and stress structure studied, retaining analyzed. results show that during excavation process, slab rose as whole greatly affected by common ground connecting wall, most unfavorable position changing changed. pits different zones had considerable east-to-west displacement diaphragm wall outside pit. maximum positive bending moment changed little, while negative increased construction. Overall, great impact wall. During column lifted upward, displacement, which located at west end near pit, gradually weakened from east. As process continued, axial force 10.38%, pressure largest middle column. thickness increased, stiffness increased. After earthwork unloading, locations high stiffnesses could resist deformations. offset due structure, horizontal existing structure. With increasing thickness, relative mainly because difference between depths old new walls caused embedded two same differ. Furthermore, there were differences Earth behind depth active