Numerical Study on Pile Performances Induced by Adjacent Deep Braced Excavation

摘要

The pile responses to lateral soil movements induced by the adjacent deep excavations have attracted increasing attention from geotechnical engineers. The lateral displacements of soils caused by deep excavations could pose significant impacts on the adjacent piles according to field instrumented data. In this paper, the FE analyses considering soil of HSS constitutive model were carried out to establish the excavation induced pile behaviors by varying the depth of excavation, pile length, pile distance from excavation, system stiffness, soil stress state, pile head fixity, unsupported length of pile, axial loadings exerted on the pile. This study provides design guidelines for lateral deformation estimations of foundation piles and the buildings above and preliminary stability evaluations.