Abstract
Long-term consolidation of surrounding ground may cause deformation, cracks of segment, opening of joints and other faults in shield tunnels located in soft clayey soil. To distinguish the cracks and opening caused by consolidation from those caused by another reason, such as construction method, it is required to develop the calculation method considering the progress of cracks and opening in accordance with the time-history stress and strain experienced by the shield tunnels. This paper proposes the calculation method, coupling the ground-tunnel interaction analysis and the sophisticated tunnel deformation analysis.
