Energy dissipation system using Metal dampers for seismic protection of large hospital buildings

In order to study the energy dissipation structure effect of metal dampers in a large hospital frame structure, the nonlinear time history analysis by SAP2000 software was applied to the hospital structure with metal dampers and without metal dampers. Moreover, the structure with metal dampers in every other floor method was respectively adopted, and energy dissipation structure effect was compared. The results show that metal dampers have good dissipation capacity under 8-degree rare earthquake, and the top displacement and story drift of the structure distinct decreased, and that the damping effect of every other floor was also better than each floor. Then the change rule of acceleration response spectra with a period was compared and analyzed. The acceleration altered more in the short period, and the acceleration of energy dissipation structure was smaller than primary structure, but the change was smaller in the extended-cycle and basically tended to be consistent. The hysteretic curves of arrangement one are fuller than arrangement two, which correspond to the conclusion. The research results of the paper may provide a reference for energy dissipation structure design of a similar project.