Abstract: By analyzing the impaction of the different arm length on non-enhancing ring plate, 1 / 4 ring stiffener, 1 / 2 ring and ring stiffeners’ bearing capacity and compared with the experimental data. We can draw the conclusion that the shear can reduce the bearing capacity. The bearing capacity of non-enhancing is low, so the shear has the little influence on it. Whereas ring stiffener’s bearing capacity is large, the shear has more influence on it than non-enhancing ring plate.