2025 Volume 81 Issue 13 Article ID: 24-13495
In this paper, a fundamental study focusing on the effects of damping of ground and structure was conducted to improve the combination of ground deformation and inertia force when using the seismic deformation method. Specifically, dynamic analyses were conducted for various types of grounds and structures, varying the damping of one or the other, and the combination coefficients of the actions were compiled and discussed. As a result, it is clarified that the combination coefficients of the action change with the damping of the ground and the structure. The tendency of this change is formulated, and a simple formula is proposed to calculate the combination coefficient of the action, taking into account the effect of damping. Using the proposed method, it is possible to set more appropriate combination coefficients than before, taking into account the effects of damping of the ground and structure.
