BETWEEN SNI 03-1726-2012 AND SNI 03-1726-2019SEISMIC BASE SHEAR ANALYSIS IN ACEH PROVINCE: A COMPARISON

Abstract

Indonesia, being one of the earthquake-prone countries, faces the constant threat of seismic events with varying intensities. With four surrounding tectonic plates, earthquakes impact the region frequently, resulting in significant structural damage and casualties. To mitigate these damages, the Indonesian government revised the seismic resistant design code in 2019, replacing the previous version issued in 2012. This update was necessitated by the seismic events over the years, which exposed the need for incorporating the latest seismic design technologies and global standards.

The Sumatera region, particularly Aceh, is significantly influenced by two major earthquake sources: the megathrust zone beneath the west Sumatera ocean and the Sumatera Great Fault. The devastating Aceh earthquake and tsunami in 2004 had a profound impact on seismic activity in the region, generating tectonic forces that trigger earthquakes in various epicenters. Subsequent earthquakes, such as those in Singkarak, West Sumatera, Padang, and Kerinci, further emphasized the need for comprehensive seismic analysis and updated design codes.

Considering the differences between the seismic design codes, SNI 03-1726-2012 and SNI 03-1726-2019, specifically concerning spectrum response data, a comparative study is essential to analyze the seismic base shear and its impact on building structures in Aceh. This study aims to assess the required cross-sectional area of columns, beams, and ring beams in low-rise building structures across 23 regencies/cities in Aceh Province using the aforementioned seismic design codes.

In this research, seismic data from various earthquake events, including the 2016 Pidie Jaya earthquake, the 2013 Takengon Lot Tawar lake area earthquake, and historical events dating back to 1967 and 1942, will be analyzed. The seismic base shear and the impact on building elements' dimensions will be evaluated based on both SNI 03-1726-2012 and SNI 03-1726-2019, providing valuable insights for seismic-resistant construction in Aceh.