損傷分散要素と減衰要素を有する 2 層木質構造物の共振曲線に基づく振動特性評価

Vibration characteristics of a two-story timber structure with damage-dispersing and damping elements are discussed based on resonance curves and time history seismic response analysis. Steady-state response of the two-story nonlinear system was obtained by using Caughey's equivalent linearization technique, then the resonance curves were plotted by solving a sequential quadratic programming problem. Time history response analyses were conducted using 98 ground motion records to evaluate the variation of seismic response. The result shows that the damage-dispersing element stabilizes steady-state response and enhances the robustness on seismic response, and the viscous damping element mitigates jump phenomenon of the resonance curve.