抄録
Several finite element procedures for frictionless- or friction-contact problems have been proposed for the case in which node-to-node contact no longer holds. One of the typical computational algorithmes have been generalized by using a perturbed Lagrangian and localized mixed concepts. The numerical parametric analyses carried out by using the algorithm to study the contact influence between a shield machine and the surrounding ground. In this paper, we descrive the results of the analyses and a mechanism of the excessive loading pressure occurring during shield tunnel construction.
