ABSTRACT
In this analysis study, based on the recognition that the primary volume loss in the construction of the shield tunnel is caused by the tail void gap between the segment lining and the ground skin, the tail void gap is modeled as an interface element to analyze the effect of segment lining by stiffness values and spacing ‘e’ of the interface. These results were evaluated by the member force analysis of a lining and the Convergence Confinement method. If the larger the gap between the tail void interface between the segment lining and the ground and the lower the stiffness value, even if the gap grouting process and the installation of the segment are performed simultaneously, the support stiffness of the actual segment lining is expressed afterward the stiffness combination of the segment lining and the interface. In conclusion, this analysis is required to control the load on the lining.
