Abstract
Shield-driven tunneling method hereafter will be adopted in deep underground. In deep underground, while the earth pressure is lower because of the ground being more stable, the water pressure is higher. The the small earth pressure makes bending moment small but high water pressure makes the axial force large in the segmental lining. Therefore, using steel segments as the lining, there is high possibility that the local buckling of main girder of steel segments will occur. In this paper, the behavior of the local buckling at main girder of steel segments is studied by the test results using the modeled specimens and by the results of numerical analysis using the Finite Element Method. As a result of this study, the numerical analysis explained well the test results.
