Performance assessment of building structures due to Pidie Jaya earthquake using pushover analysis

Abstract

Pidie Jaya earthquake occurred on December 7, 2016 caused the damage of many building structures. Therefore, it is important to assess the performance of building structures in resisting the earthquake load. In this paper, the performance assessment of two building structures, which were the Multipurpose Hall Building that has been deformed permanently and Prosecutor’s Office Buildings that have been experienced some flexural and shear cracks was conducted. The study was started by performing site, design document, and as built drawing assessment. The building structures were modelled as space frames using ETABS software and the data obtained from the site was inputted. The design response spectrum recommended by SNI 1726:2019 was used as spectrum demand. The performance of building structures was assessed by conducting a non-linear push over analysis in two X and Y directions until the structures near to collapse and capacity curves were obtained. By comparing the capacity and demand spectrums in Acceleration-Displacement Response Spectrum (ADRS) format, then the performance points of the structures were obtained based on ATC-40. Based on the inter-story drift at the performance point, then the performance levels of the structures were determined. The assessment results showed that the performance level of the Multipurpose Hall Building structure is Life Safety, while the Prosecutor’s Office Building structure is Damage Control.