THE EFFECTS OF GROUND REACTION LOAD ON THE SECTION FORCE OF SHIELD TUNNEL LINING

Abstract

The design loads that are reduced by the ground reaction are estimated simply for usual conventional design method. The other hand, the reaction loads should be estimated by deformation and displacement of tunnel lining, for the beam-spring design method that is more practical than usual method. Our former report observed that the difference between the deformation mode of each design method have effect on the section force of tunnel lining at the certain soil condition. In this paper, the effects of ground condition on the ground reaction force and the section force of tunnel lining are discussed. They were revealed by analyzing the usual conventional design method and the beam-spring design method with the ground condition as the parameters.