Studi Komparasi Respons Struktur Fixed Base Dan Dengan Isolasi Dasar Friction Pendulum System Pada Gedung Rumah Sakit 8 Lantai

Cahyono, Irfan Dicky (2026) Studi Komparasi Respons Struktur Fixed Base Dan Dengan Isolasi Dasar Friction Pendulum System Pada Gedung Rumah Sakit 8 Lantai. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia merupakan wilayah dengan aktivitas kegempaan tinggi, di mana data Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) mencatat lebih dari 5.000 gempa setiap tahun dalam satu dekade terakhir. Beberapa diantaranya bersifat signifikan dan mampu menimbulkan kerusakan serius serta korban jiwa. Kondisi ini menuntut penerapan sistem penahan gempa yang lebih efektif untuk meminimalkan dampak destruktif pada bangunan. Salah satu strategi yang berkembang adalah penggunaan sistem base isolation, yang bertujuan mengurangi energi getaran yang diteruskan ke struktur bangunan. Penelitian ini membahas modifikasi struktur Gedung Rumah Sakit 8 lantai dengan penerapan Base Isolation tipe Friction Pendulum System (FPS) FIP-D L 1200/600 (3700) dan FIP-D L 1050/600 (3700). Analisis dilakukan pada struktur primer dan sekunder, baik pada kondisi fixed base maupun pada struktur yang telah dimodifikasi. Penelitian ini juga bertujuan membandingkan perilaku kedua sistem berdasarkan parameter gaya geser dasar, periode struktur, perpindahan, serta interstory drift. Perencanaan mengacu pada SNI 2847:2019, SNI 1726:2019, SNI 1727:2013, PPIUG 1983, dan literatur pendukung. Pemodelan dilakukan dengan software ETABS dan verifikasi respons isolator dilakukan melalui Time History Analysis. Hasil menunjukkan bahwa penerapan base isolation meningkatkan periode alami struktur dengan kenaikan sekitar 214,0% pada mode pertama. Partisipasi massa modal pada mode awal mencapai lebih dari 90%, jauh lebih dominan dibandingkan struktur fixed base. Gaya geser dasar menurun rata-rata 44,5% pada arah X dan 45,9% pada arah Y. Pengurangan pada story drift mencapai 74,3% di arah X dan 75,7% di arah Y, sedangkan percepatan atap turun sekitar 68,06%. Dari aspek material, kebutuhan beton berkurang 11,59% dan baja tulangan turun 34,75%. Hasil tersebut menunjukkan bahwa base isolation tidak hanya meningkatkan kinerja seismik, tetapi juga memberikan efisiensi material dan keuntungan ekonomi pada bangunan gedung yang berlokasi di daerah rawan gempa.
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Indonesia is a region with high seismic activity, where data from the Meteorology, Climatology, and Geophysics Agency (BMKG) records more than 5,000 earthquakes annually over the past decade. Some of these earthquakes are significant and capable of causing serious damage and loss of life. This situation requires the implementation of a more effective earthquake resistance system to minimize the destructive impact on buildings. One strategy that has been developed is the use of a base isolation system, which aims to reduce the energy of vibrations transmitted to the building structure. This study discusses the modification of an 8 story hospital building structure with the application of a Friction Pendulum System (FPS) FIP D L 1200/600 (3700) and FIP-D L 1050/600 (3700) base isolation system. The analysis was conducted on the primary and secondary structures, both in fixed base conditions and in modified structures. This study also aims to compare the behavior of the two systems based on the parameters of base shear force, structural period, displacement, and interstory drift. The design refers to SNI 2847:2019, SNI 1726:2019, SNI 1727:2013, PPIUG 1983, and supporting literature. Modeling was performed using ETABS software, and the isolator response was verified through Time History Analysis. The results show that the application of base isolation increases the natural period of the structure by approximately 214.0% in the first mode. Mass participation in the initial mode reaches more than 90%, which is far more dominant than in fixed base structures. The base shear force decreased by an average of 44.5% in the X direction and 45.9% in the Y direction. The reduction in story drift reached 74.3% in the X direction and 75.7% in the Y direction, while the roof acceleration decreased by approximately 68.06%. In terms of materials, the concrete requirement was reduced by 11.59% and the steel reinforcement by 34.75%. These results show that base isolation not only improves seismic performance but also provides material efficiency and economic benefits for buildings located in earthquake-prone areas.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Gempa, Base Isolation, Friction Pendulum System, Time History Analysis, Earthquake, Base Isolation, Friction Pendulum System, Time History
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design T Technology > TH Building construction > TH1095 Earthquakes and building
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Irfan Dicky Cahyono
Date Deposited:	21 Jan 2026 06:45
Last Modified:	21 Jan 2026 06:45
URI:	http://repository.its.ac.id/id/eprint/129938

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