Gallardo, José; De la Llera, Juan C; Crempien, Jorge GF; Freddi, Fabio; Rossetto, Tiziana; Cembrano, Jose; Chacón, Matias F; ... Dede, S; + view all Gallardo, José; De la Llera, Juan C; Crempien, Jorge GF; Freddi, Fabio; Rossetto, Tiziana; Cembrano, Jose; Chacón, Matias F; Muñoz, J; Gutiérrez-Urzúa, F; Dede, S; - view fewer (2023) Seismic response of a seismically isolated hospital with HDRBs to crustal earthquakes. In: Proceedings of the XIII Chilean Conference on Seismology and Earthquake Engineering: ACHISINA 2023. (pp. pp. 1-13). ACHISINA: Viña del Mar, Chile.

Preview

Text Gallardo2023_hospitals_ACHISINA.pdf - Published Version Download (1MB) | Preview

Abstract

Given the excellent performance observed in seismically isolated structures, in contrast to the poor performance of their counterpart fixed-to-base buildings during the Maule 2010 earthquake, Chilean authorities have strongly suggested using seismic isolation in almost every new hospital. Thus, most of the new large healthcare facilities have used seismic isolation, where High Damping rubber Bearings (HDRBs) are one of the most used isolation devices. Because subduction megathrust events highly dominate seismicity in Chile, the impact of crustal events in these seismically isolated buildings is essentially unknown. These events have taken importance since faults such as the San Ramon (SRF) have been recognized as potentially active in recent years. Consequently, this manuscript presents insights into the impact of aground motion from an earthquake inside the SRF on a seismically isolated hospital with HDRBs in Santiago, Chile, which lies less than 15 km from the fault. Given the lack of reliable data on the seismogenic capacity of the SRF, physics-based synthetic earthquake simulations are used to predict the ground motions, an upper and lower bounds are defined for some key source parameters, such as the magnitude and average rupture velocity. A set of 16 simulations is generated for each parameter combination. The building response, considering quantities such as the shear force of the isolation layer, inter-story drifts, and floor accelerations, is measured to characterize the response of the hospital. It is concluded that the demands on the hospital due to crustal events could be large enough to control some limit states of the case-study hospital, even exceeding in some cases the demands of subduction megathrust events for which it was designed.

Download activity - last month

Export as CSVXMLJSON

Download activity - last 12 months

Export as JSONCSVXML

Downloads by country - last 12 months

Export as CSVXMLJSON

Archive Staff Only

View Item