ANALISIS KURVA KERAPUHAN PADA BANGUNAN MASJID TERHADAP BEBAN SEISMIK MENGGUNAKAN SOFTWARE STERA 3D

Earthquakes are natural phenomena that cause damage to structures and often cause fatalities. To overcome the impact of the earthquake, an analysis of the return period of the earthquake was carried out through records or records of past earthquakes so that structural planning for the design earthquake load can be carried out. The mosque building is a building with a fairly high vulnerability to earthquakes, so it is necessary to do related research. In this study, the mosque building was modeled in general and then analyzed its performance on 5 earthquake zones in Indonesia. This study uses the pushover analysis method contained in the STERA 3D software. By doing pushover analysis, the output of the capacity curve for calculations using the HAZUS method is obtained so that the seismic fragility curve is obtained. In the pushover analysis, there was no difference in stiffness against different earthquake zones. Meanwhile, the largest displacement value is in the mosque building with the Sabang and Gorontalo earthquake zones, respectively, 14.53 cm in the Y direction and 8.78 cm in the X direction. In the analysis using the HAZUS method, the greatest probability of structural damage is in the Sabang earthquake area with a 7% damping having a value of 40.77% at the complete level of damage, 77.93% at the extensive level, 94.5% at the moderate level, and 98, 95% at a slight rate