Studi Komparasi Respon Struktural Fixed Base System dan Base Isolation System Tipe Lead Rubber Bearing pada Bangunan Gedung 8 Lantai

Putra, Moch. Arga Brilliantsyah (2025) Studi Komparasi Respon Struktural Fixed Base System dan Base Isolation System Tipe Lead Rubber Bearing pada Bangunan Gedung 8 Lantai. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5012211020-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (25MB) | Request a copy

Abstract

Penelitian ini bertujuan untuk mengevaluasi dan membandingkan respons struktural antara sistem struktur eksisting fixed base dan sistem struktur gedung eksisting yang dilengkapi base isolation tipe LRB (Lead Rubber Bearing) pada gedung 8 lantai di Kota Malang, yang mengalami peningkatan parameter gempa berdasarkan peta gempa tahun 2017. Perubahan signifikan pada parameter gempa seperti PGA, Ss, dan S1, menuntut peninjauan ulang terhadap struktur yang sebelumnya dirancang menggunakan peta gempa 2010. Metode analisis yang digunakan dalam studi ini adalah Nonlinear Time History Analysis, dengan beban gempa aktual yang telah dilakukan spectral matching terhadap spektrum target BSE-2E. Pemodelan dilakukan menggunakan perangkat lunak ETABS dengan mempertimbangkan kriteria dari ASCE 41-17 dan SNI 1726:2019. Hasil studi menunjukkan bahwa penggunaan sistem LRB pada gedung eksisting secara signifikan meningkatkan kinerja struktur. Hal tersebut ditunjukkan oleh peningkatan periode fundamental struktur hingga 2,4 kali lipat, reduksi gaya geser dasar hingga 45,36% dan percepatan atap hingga 59,13%. Selain itu, terjadi pengurangan inter-story drift dan story displacement yang signifikan, serta peningkatan level kinerja struktur dari Collapse Prevention menjadi Immediate Occupancy. Hal ini menunjukkan bahwa sistem base isolation tidak hanya mengurangi risiko kerusakan struktural, tetapi juga meningkatkan peluang bangunan untuk tetap berfungsi pasca-gempa. Penelitian ini menyimpulkan bahwa penggunaan LRB pada bangunan bertingkat sedang di wilayah rawan gempa sangat efektif dan dapat menjadi referensi bagi perencanaan struktur tahan gempa.
===================================================================================================================================
This study aims to evaluate and compare the structural response between an existing structural building with fixed-base structural system and an existing structural building with base isolation system using Lead Rubber Bearings (LRB) for an eight-story building in Malang City, which has experienced an increase in seismic parameters based on the 2017 earthquake hazard map. Significant changes in seismic parameters such as PGA, Ss, and S1 necessitate a reassessment of buildings previously designed using the 2010 seismic map. The analysis method employed in this study is Nonlinear Time History Analysis, using actual earthquake records that have undergone spectral matching to the BSE-2E target spectrum. Modeling was performed using ETABS software, considering criteria from ASCE 41-17 and SNI 1726:2019. The results show that the application of the LRB system at existing building significantly improves structural performance. This is indicated by an increase in the fundamental period by up to 2,4 times, a reduction in base shear force by 45,36%, and a reduction in roof acceleration by 59,13%. In addition, there was a significant reduction in inter-story drift and story displacement, as well as an improvement in the structural performance level from Collapse Prevention to Immediate Occupancy. These findings indicate that the base isolation system not only reduces the risk of structural damage, but also increases the likelihood of the building remaining functional after an earthquake. This study concludes that the use of LRB in mid-rise buildings located in seismic-prone areas is highly effective and can serve as a reference for future earthquake-resistant structural design.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Analisis Riwayat Waktu, Gedung Tahan Gempa, Isolasi Dasar, Kinerja Struktur, Lead Rubber Bearing, Base Isolation; Earthquake-Resistant Building, Lead Rubber Bearing, Structural Performance, Time History Analysis
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TH Building construction > TH1095 Earthquakes and building T Technology > TH Building construction > TH2247 Shear walls--Materials
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Moch. Arga Brilliantsyah Putra
Date Deposited:	28 Jul 2025 00:48
Last Modified:	28 Jul 2025 00:48
URI:	http://repository.its.ac.id/id/eprint/121813

Actions (login required)

View Item