Seismic Response Analysis for Engineering Structures Equipped with Double Viscous Damper Toggle Brace System

<p>The toggle brace viscous damping system has been proved to be an effective motion amplification device, which can amplify the deformation of the damper under wind load and earthquake action, thus significantly improving the energy dissipation efficiency of the damper. In the existing viscous damping system of elbow joint, the damping force will act directly on the floor beam, which often leads to unsatisfied performance of the connected floor beam. Therefore, a double-damper toggle brace device is proposed in this paper, and a mathematical model of geometric parameter optimization of double-damper toggle brace device system is established. According to this mathematical model, a larger displacement amplification factor can be obtained, which is far superior to the existing toggle damping system. Finally, a two-story steel frame model is taken as an example to verify the effectiveness and applicability of the proposed double-damper toggle brace device system.</p>