Evaluation of seismic collapse resistance of reinforced concrete frames designed with nonlinear viscous dampers

In earthquake engineering, damping devices are commonly used to enhance the energy dissipation capacity of structures and help control structural dynamic response under seismic excitation. design building with integration dampers, section sizes components amount reinforcement may be reduced so that performance structure remains comparable a conventional without dampers actions. Understandably such changes in scheme can lead some different behavior levels actions; however there is little information literature on this subject, particularly regard capacities resisting collapse event worst case scenario earthquakes. This paper presents an evaluation resistance designed dampers. A numerical model for analysis reinforced concrete (RC) frame firstly explored. To ensure capable capturing capacity, material state based elemental failure criterion adopted adequacy verified against relevant experimental data. The then employed evaluate performances RC frames intensities nonlinear viscous via fragility analysis. results show when low moderate intensities, integrated (DDF structures) exhibit slightly higher as compared damper (CDF structures). However, high hazard levels, DDF tend have markedly lower than their counterparts. remedial proposed improve consideration applications, effectiveness further evaluated through