EVALUATION OF SEISMIC PERFORMANCE OF HOSPITAL BUILDING USING PUSHOVER ANALYSIS BASED ON ATC-40

Abstract

Hospitals are crucial healthcare facilities that play a significant role in improving the health level of people in Aceh. The Cut Nyak Dien Meulaboh Aceh Regional Referral Hospital is located in an area with a high earthquake intensity, making earthquake-resistant building aspects indispensable. The hospital was designed in 2016, but changes were made to its structural elements during construction. The aim of this study was to establish the performance level criteria for the hospital building structures that underwent design changes in practice. The research revealed that the structure could exhibit nonlinear behaviour, as shown by the distribution of plastic hinges that started with the yielding of the beam, followed by yielding of the column. This aligns with the planning concept of strong weak beam earthquake-resistant column (SCWB). The pushover analysis results demonstrated that the performance point displacement in the x-direction was 0.052 m with a base shear of 20090.204 KN and the displacement in the y-direction was 0.058 m with a base shear of 19832.572 KN. With a maximum story drift value based on ATC-40 during an earthquake in the x and y directions of D > 0.01, the structure falls under the category of Immediate Occupancy.