Coefficients of Settlement and Lateral Displacement in Pile Group during Tunneling

Abstract

Finite element methods are adopted herein to study the group effect and sheltering effect in pile group during shield driven when the couple effect of vertical loads and soil displacement is considered. Results from the FEM show fine agreement with those from the Tianjin No.1 subway line project and the centrifuge tests carried out by Loganathan. Based on the finite element models, the effects of tunneling on pile groups are studied. The coefficients of settlement and lateral displacement are defined to assess the group effect and sheltering effect in pile groups with elevated cap.