ABSTRACT
Due to rapid infrastructure development in urban areas, is a common practice to excavate near an existing pile foundation which changes the state of stress of the existing surrounding soil. The unloading due to excavation, changes the behavior of pile as compared to pile subjected to only vertical loading. If the excavation is near to a group pile, the group effect also tends to change the behavior of each pile in the group along with the unloading effect due to excavation. In this study, numerical simulation is done using commercially available software PLAXIS 3D to analyze the change in behavior of group pile due to adjacent excavation in commonly occurring multi-layered soil along the pile shaft. The analysis is done with Hardening soil constitutive model to simulate the naturally existing soil strata. The results from this study can be used for similar type of soil to predict the change in behavior of group pile subjected to deep excavations.
