Seismic Performance of RC Frame Hospital Buildings Using Friction Dampers under Multiple Earthquakes

Frequent earthquakes indicate that isolated seismic events are rare, with the probability of an independent earthquake typically not exceeding 10%. Earthquakes are not isolated phenomena and may occur in quick succession under certain conditions. If buildings are not reinforced, they may suffer significant damage or even collapse when subjected to subsequent earthquakes. Currently, most international seismic design codes only consider single seismic events, i.e., the effect of the main earthquake. Studying the seismic performance of buildings under multiple earthquakes is of great significance both academically and practically, under a seismic load of 620 Gallons, the damping structure reduced inter story displacement by 18% compared to traditional design, indicating improved elasticity.