ANALISIS PERBANDINGAN KINERJA SEISMIK STRUKTUR GEDUNG BETON BERTULANG MENGGUNAKAN SISTEM GANDA DAN SRPMK

Abstract

Selecting an appropriate lateral force-resisting system is critical in the design of multi-story buildings located in high-seismicity regions. This study aims to compare the seismic performance and structural behavior efficiency between buildings utilizing a pure Special Moment Resisting Frame (SMRF/SRPMK) and a Dual System combining SMRF with structural shear walls. A high-rise reinforced concrete building model was evaluated using response spectrum dynamic analysis in accordance with SNI 1726:2019 and SNI 2847:2019 standards via ETABS software. Key parameters evaluated include natural vibration period, base shear, story drift, and lateral force distribution. The results indicate that incorporating structural shear walls in the Dual System significantly increases overall lateral stiffness, as demonstrated by a shorter fundamental period ($T$) and a substantial reduction in story drift compared to the standalone SMRF model. Furthermore, the structural shear walls in the Dual System effectively absorb over 75% of the total base shear, thereby optimizing the required dimensions and reinforcement detailing of the frame elements. Overall, the Dual System provides superior lateral deformation control and enhanced structural reliability for high-rise buildings in earthquake prone zones.