This paper focuses on the stiffness evaluation and the summation rules for the two-story timber frames, comprising of main frames and various aseismic elements, based on shaking table tests. The equivalent stiffness and skeleton curves for these elements are extracted based on system identification approach using acceleration response on several input motion. Summation rules are generally verified for the combination of main frames and other aseismic elements, based on assumption that the characteristics of main frames depend on axial force.
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