Effects of the shape of the edge of an underground structure on the surrounding ground

An increasing number of underground structures are recently being constructed under numerous restrictive conditions. Interaction between the ground and the structure due to neighboring construction is therefore inevitable. No effects of such an interaction have, however, been fully identified. In this study, ground deformations and stress changes in the ground owing to the relative displacement between the ground and the structure were examined based on the results of various model tests and numerical analyses. In particular, the effects of varying shapes of the edge of an underground structure on the ground deformation and stress changes in the ground were identified.