ANALISIS PENGARUH GEMPA DENGAN MENGGUNAKAN BASE ISOLATOR TIPE LEAD RUBBER BEARING TERHADAP RESPON STRUKTUR REGULER BUILDING 5 LANTAI DENGAN METODE TIME HISTORY

Abstract

Indonesia is one of the countries that often experiences earthquakes where structures can fail due to the earthquake. One solution to structural failure due to earthquakes is to use base isolation. The base isolation used in this study is (LRB). The purpose of this study is to compare the response of Fixed Based buildings with buildings using Lead Rubber Bearing type Base isolators. This study used a five-story hospital building as a study model. The analysis used in this study is nonlinear time history analysis using ground motion recordings that have been aggregated against the spectrum response in the area being reviewed. The analysis was carried out with the help of Midan Gen 2023 Software. The building parameters reviewed in this study consist of the natural structure period, base shear force, lateral structure displacement, and inter-floor displacement. This study refers to SNI 1726-2019. The results of the study show that buildings using base isolators have a longer natural period than buildings without isolation. In addition, buildings using Lead Rubber Bearing are able to reduce the earthquake force that occurs compared to buildings without isolators. Finally, lateral structural displacement can be reduced in buildings using base isolators.