Evaluasi Dan Rehabilitasi Gedung Eksisting 10 Lantai Sesuai SNI 9273:2025 Menggunakan Isolasi Dasar Friction Pendulum System Melalui Nonlinear Time History Analysis

Pinatih, Made Arya Kusuma Artha (2026) Evaluasi Dan Rehabilitasi Gedung Eksisting 10 Lantai Sesuai SNI 9273:2025 Menggunakan Isolasi Dasar Friction Pendulum System Melalui Nonlinear Time History Analysis. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pembaruan Peta Gempa Indonesia 2017 yang diadopsi dalam SNI 1726:2019 meningkatkan tuntutan beban gempa pada bangunan eksisting di berbagai wilayah, termasuk Kota Malang. Kondisi ini menyebabkan bangunan yang dirancang berdasarkan SNI 1726:2012 perlu dievaluasi untuk memastikan kinerja seismiknya masih memenuhi persyaratan. Mengingat gedung perkuliahan merupakan fasilitas publik dengan tingkat okupansi dan intensitas pemanfaatan yang tinggi serta berpotensi mengalami perubahan kebutuhan ruang dan peningkatan aktivitas selama masa layan bangunan, evaluasi dan peningkatan kinerja seismik menjadi penting untuk menjamin keselamatan pengguna. Pada studi ini dilakukan evaluasi dan rehabilitasi Gedung Perkuliahan Bersama 10 lantai menggunakan sistem isolasi dasar tipe Friction Pendulum System (FPS). Evaluasi struktur dilakukan berdasarkan SNI 9273:2025 melalui prosedur Tier 1, Tier 2, dan Tier 3, sedangkan analisis respons struktur menggunakan metode Nonlinear Time History Analysis (NLTHA) dengan 11 rekaman gempa yang telah dilakukan spectral matching. Hasil evaluasi menunjukkan beberapa elemen balok, kolom, dan hubungan balok–kolom mengalami deficiency sehingga memerlukan rehabilitasi. Penerapan FPS meningkatkan periode fundamental struktur dari 1,85 detik menjadi 3,217 detik, menurunkan rata-rata gaya geser dasar maksimum hingga 46,83% pada arah X dan 50,13% pada arah Y. Simpangan antar lantai maksimum mengalami penurunan rata-rata sebesar 44,31% pada arah X dan 47,82% pada arah Y dibandingkan kondisi fixed base. Selain itu, respons percepatan lantai atas maksimum juga mengalami penurunan rata-rata sebesar 36,84% pada arah X dan 35,73% pada arah Y. Tingkat kinerja struktur meningkat dari Collapse Prevention (CP) pada struktur eksisting menjadi Operational (O) setelah rehabilitasi. Dengan demikian, penggunaan sistem isolasi dasar tipe FPS terbukti efektif meningkatkan kinerja seismik gedung eksisting sehingga memenuhi persyaratan evaluasi dan rehabilitasi sesuai SNI 9273:2025.
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The 2017 Indonesian Seismic Hazard Map, adopted in SNI 1726:2019, has increased the seismic design demand for existing buildings in various regions, including Malang City. Consequently, buildings designed based on SNI 1726:2012 need to be evaluated to ensure that their seismic performance still satisfies the current requirements. Considering that university buildings are public facilities with high occupancy levels and intensive daily utilization, as well as the potential for changes in space utilization and increased operational activities throughout their service life, evaluating and improving their seismic performance is essential to ensure occupant safety. This study evaluates and rehabilitates a 10-story university building using a Friction Pendulum System (FPS) base isolation system. The structural evaluation was conducted in accordance with SNI 9273:2025 through Tier 1, Tier 2, and Tier 3 procedures, while the structural response was analyzed using Nonlinear Time History Analysis (NLTHA) with 11 spectrally matched ground motion records. The evaluation results indicate that several beams, columns, and beam-column joints exhibit structural deficiencies requiring seismic rehabilitation. The implementation of the FPS increased the fundamental period from 1.85 s to 3.217 s and reduced the average maximum base shear by 46.82% and 50,13% in the X and Y directions, respectively. In addition, the average maximum interstory drift decreased by 44.31% in the X direction and 47.82% in the Y direction compared to the fixed-base condition. The average maximum roof acceleration was also reduced by 36.84% and 35.73% in the X and Y directions, respectively. Furthermore, the structural performance level improved from Collapse Prevention (CP) in the existing structure to Operational (O) after rehabilitation. Therefore, the application of the FPS base isolation system is proven to effectively enhance the seismic performance of the existing building, enabling it to satisfy the evaluation and rehabilitation requirements specified in SNI 9273:2025.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Evaluasi, Rehabilitasi, Isolasi Dasar, Friction Pendulum System, Nonlinear Riwayat Waktu, Sendi Plastis, Malang.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Made Arya Kusuma Artha Pinatih
Date Deposited:	28 Jul 2026 07:19
Last Modified:	28 Jul 2026 07:19
URI:	http://repository.its.ac.id/id/eprint/138493

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