LUKITO, ANDRE DOHAN and ADHYAKSA, MUHAMMAD SYAIFUL ZULFA (2025) ANALISIS PENGARUH PENGGUNAAN BASE ISOLATOR LEAD RUBBER BEARING DAN FRICTION PENDULUM BEARING TERHADAP LEVEL KINERJA STRUKTUR (Studi Kasus Proyek Pembangunan Gedung X di Banda Aceh). S1 thesis, UNIVERSITAS KATOLIK SOEGIJAPRANATA.

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Abstract

The challenge of ensuring the structural resilience of buildings in earthquake-prone areas in Indonesia is often caused by the selection of suboptimal mitigation methods. The proper selection of earthquake-resistant design methods is crucial to protect structures from potential earthquake-induced damage. The use of base isolator technology, such as Lead Rubber Bearing (LRB) and Friction Pendulum Bearing (FPB), has proven effective in enhancing building resilience to earthquakes when applied with thorough planning and detailed analysis. These technologies absorb a significant portion of seismic energy, thereby reducing the negative impact of lateral forces on the structure. This study aims to analyze the effectiveness of LRB and FPB in improving seismic performance in Building X, located in Banda Aceh, an area with a high seismic risk. Using structural modeling supported by software ETABS, the study compares the drift ratio and performance levels of conventional structures without isolators and using LRB and FPB. The simulation results show the drift ratio without a base isolator is 0,5106%, the use of LRB reduces the drift ratio to 0.1017%, improving the structure’s performance from Life Safety to Operational with an 80.1% improvement compared to conventional structures. In contrast, FPB exhibits a lower drift ratio of 0.0463%, achieving a 90.93% performance increase. Both isolators were found to be effective in enhancing seismic resilience, with FPB offering superior performance in reducing lateral deformation, making it the more optimal choice for buildings in high seismic risk areas like Banda Aceh.

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