Evaluasi seismik struktur bangunan bertingkat dengan analisis statik nonlinier (Pushover) menggunakan program ETABS

Abstract

Lampung Province which is traversed by the Sumatran fault (Great Sumatran Fault) which causes the potential for tectonic earthquakes to occur, which is the location of the Multazam Building. So it is necessary to evaluate the performance of the building structure. The purpose of this study is to evaluate the existing Multazam Building in the Hajj Dormitory area of Lampung Province against earthquake loads. The analysis method in this study uses pushover analysis with reference to the ATC-40 (Applied Technology council) method. From the analysis that has been done, the base shear value for the x-direction capacity curve of 20105.37 kN is greater than the y-direction capacity curve of 18823.68 kN. This shows that the x direction is the strong axis of the building while the y direction is the weak axis of the building. Next for the structural performance level based on the maximum total drift parameter, the values for the x direction is 0.005145 and the y direction is 0.005550, with the structural performance level in the Immediate Occupancy (IO) category. Furthermore, based on the maximum inelastic drift parameter, the value for the x direction is 0.005078 and the y direction is 0.005483, with the structural performance level in the Damage Control (DC) category. Then for the plasticization process in the building under review begins with the appearance of plastic joints in the beam section then in the column section of the building. Based on the ATC-40 code, this is in accordance with the beam sway mechanism criteria.