Nugroho, Ferdy Widyawan (2022) Desain Modifikasi Dan Analisis Penerapan Sistem Isolasi Dasar Tipe Friction Pendulum System Pada Struktur Gedung At Tauhid Tower Universitas Muhammadiyah Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Indonesia terletak pada salah satu zona tektonik paling aktif di dunia. Hal tersebut menjadikan Indonesia sering mengalami gempa dan potensi gempa ke depannya diprediksi akan terus meningkat. Serangkaian kejadian gempa yang telah terjadi di Indonesia menunjukkan bahwa dampak bencana gempa didominasi oleh gagalnya bangunan saat menahan beban akibat goncangan gempa yang kuat sehingga diperlukan perencanaan struktur tahan gempa yang memiliki kinerja yang baik saat gempa terjadi. Penggunaan sistem isolasi dasar, salah satu perkembangan dalam bidang rekayasa gempa, diharapkan mampu mengatasi permasalahan kerusakan yang signifikan akibat gempa. Dalam tugas akhir ini, Gedung At Tauhid Tower Universitas Muhammadiyah Surabaya yang merupakan gedung beton bertulang 13 lantai dengan sistem rangka pemikul momen dan dinding geser dimodifikasi dengan menggunakan sistem isolasi dasar tipe Friction Pendulum System. Desain yang dilakukan meliputi desain struktur sekunder, struktur primer, isolator dasar, dan pondasi. Dilakukan analisis respon spektra untuk tahap desain dan analisis nonlinier riwayat waktu untuk tahap evaluasi kinerja struktur. Dari hasil desain modifikasi, periode alami mengalami peningkatan yang signifikan pada mode-mode dominan setelah dilengkapi dengan perangkat isolasi dasar hingga 97% periode dari struktur fixed base. Ditinjau dari parameter rasio partisipasi massa modal, struktur dengan sistem isolasi dasar mengalami perbaikan di mana rasio partisipasi massa modal mode pertama menjadi sangat dominan, yaitu lebih dari 95%. Berdasarkan hasil analisis terhadap respon struktur, seperti percepatan absolut lantai atap, gaya geser dasar, dan simpangan antar lantai, struktur terisolasi mengalami penurunan respon yang signifikan dibandingkan struktur fixed base. Untuk percepatan absolut lantai atap maksimum mengalami penurunan hingga rata-rata 71,93%. Untuk gaya geser dasar mengalami penurunan hingga rata-rata 47,91%. Untuk simpangan antar lantai mengalami penurunan hingga rata-rata 48,92%. Rasio disipasi energi histeresis terhadap energi gempa menunjukkan bahwa pada struktur terisolasi memiliki rata-rata disipasi energi sebesar 90,61% sehingga struktur tidak mengalami plastifikasi karena gaya gempa yang masuk ke struktur telah direduksi secara signifikan oleh FPS.
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Indonesia is located in one of the most active tectonic zones in the world. It makes Indonesia often experience earthquakes and the potential for earthquakes in the future is predicted to continue to increase. A series of earthquake events that have occurred in Indonesia shows that the impact of earthquake disasters is dominated by the failure of buildings to withstand the load due to strong earthquake excitation, so it is necessary to design earthquake-resistant structures that have good performance when an earthquake occurs. The use of base isolation systems, one of the developments in the field of earthquake engineering, is expected to be able to overcome the problem of significant damage due to strong earthquake excitation. In this final project, the At-Tauhid Tower Building, Muhammadiyah University Surabaya, a 13-story reinforced concrete building with a moment-resisting frame system and shear walls, is modified using a base isolation system of Friction Pendulum System. The designs carried out include the design of secondary structures, primary structures, base isolators, and foundations. Response spectra analysis is used for the design phase and time history nonlinear analysis is used for the structural performance evaluation phase. From the results of the modified design, the natural period encountered a significant increase in the dominant modes after being equipped with base isolation devices up to 97% from the period of the fixed base structure. In terms of the modal mass participation ratio parameter, the structure with the base isolation system has improved where the first mode mass participation ratio becomes very dominant, which is more than 95%. Based on the results of the analysis of the response of the structure, such as the absolute acceleration of the top floor, the base shear force, and the story drift, the isolated structure experienced a significant decrease in response compared to the fixed base structure. For maximum absolute top floor acceleration has decreased to an average of 71.93%. The base shear force has decreased to an average of 47.91%. The story drift has decreased to an average of 48.92%. The ratio of hysteresis energy dissipation to earthquake energy shows that the isolated structure has an average energy dissipation up to 90.61%. It means that the structure won't have plastification because the seismic forces that enter the structure have been significantly reduced by FPS.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Gempa, Beton Bertulang, Isolasi Dasar, Friction Pendulum System, Analisis Nonlinier Riwayat Waktu, Earthquake, Reinforced Concrete, Base Isolation, Friction Pendulum System, Nonlinear Time History Analysis. |
| Subjects: | 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: | Mr. Marsudiyana - |
| Date Deposited: | 07 Jan 2026 08:53 |
| Last Modified: | 07 Jan 2026 08:53 |
| URI: | http://repository.its.ac.id/id/eprint/129363 |
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