Performance-based seismic risk assessment for buildings equipped with linear and nonlinear viscous dampers

Modal Properties and Seismic Response of Existing Building Retrofitted by External Bracings With Viscous Dampers

“…15, the time-history of the base rotation is known, and the vector of nodal displacements of the MDOF system is determined by considering Eqn. (14).…”

“…This way, the links are activated by the floor absolute displacements. A similar configuration can be obtained by placing the dampers between adjacent buildings, though this solution is efficient if the two buildings have strongly different dynamic properties [13][14][15][16]. An alternative solution can be obtained by coupling the frame with an external shear deformable bracing structure.…”

Reliability of Systems Equipped With Viscous Dampers With Variable Properties

“…Some recent works have highlighted the important role of the uncertainties in the seismic performance of structures equipped with viscous dampers [4,5,6,7] and the different propagation of ground motion uncertainties in systems equipped with linear or nonlinear viscous dampers [8,9,10]. The present study focuses on the influence of the uncertainties in the damper properties.…”

Stochastic Seismic Analysis and Comparison of Alternative External Dissipative Systems

“…In fact, most of the studies in the literature focus on the most recurrent configuration involving the coupling of the structure to be protected with an external one by means of dampers placed horizontally at the storey level (Figure 1(a)). The external structure can be stiff, or it can be flexible, as in the case of adjacent buildings with different dynamic properties [14][15][16][17][18]. The dampers are activated by the absolute floor displacements in the first case and by the relative floor motion of the systems in the latter one.…”