Analisis Performa Struktur Gedung Beton Bertulang 8 Lantai Dengan Penempatan Fluid Viscous Damper (FVD) Berdasarkan Simpangan Antar Lantai

Simatupang, Windra Pranoto (2026) Analisis Performa Struktur Gedung Beton Bertulang 8 Lantai Dengan Penempatan Fluid Viscous Damper (FVD) Berdasarkan Simpangan Antar Lantai. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemasangan sistem Fluid Viscous Damper (FVD) merupakan teknologi kontrol pasif yang efektif dalam mereduksi respons dinamik dan meningkatkan ketahanan seismik gedung bertingkat. Penelitian ini mengevaluasi performa seismik gedung beton bertulang 8 lantai dengan konfigurasi denah tidak beraturan melalui komparasi tiga pemodelan struktur: tanpa peredam (Model A), FVD konvensional di setiap lantai (Model B), dan FVD terarah berbasis simpangan antar-lantai terbesar (Model C). Evaluasi dilakukan menggunakan metode Nonlinear Time History Analysis (NLTHA) dengan tiga pasangan rekaman gempa yang telah diskalakan (Imperial Valley, Loma Prieta, dan Northridge). Hasil analisis menunjukkan bahwa penambahan FVD memberikan kontribusi terhadap kekakuan dinamik struktur tanpa memicu perubahan periode fundamental secara drastis. Pemasangan FVD terbukti efektif mereduksi respons perpindahan puncak atap hingga 40,61% pada Model B dan 27,15% pada Model C. Analisis simpangan antar-lantai mengonfirmasi bahwa Model A mengalami pelampauan batas izin SNI pada tingkat kritis (Lantai 2, 5, 6, dan 7). Penerapan FVD pada Model B dan Model C berhasil menekan seluruh nilai drift ratio ke dalam zona aman (<1,0%) sehingga menjaga struktur tetap berada dalam fase perilaku elastis. Dari aspek mekanika energi, FVD pada Model B dan Model C mampu mendisipasikan energi gempa masukan (input energy) masing-masing sebesar 24,23% - 31,40% dan 17,10% - 26,40%, yang secara langsung mengalihkan beban inersia dan menekan hysteretic energy pada elemen struktural utama. Secara teknis, Model C disimpulkan sebagai konfigurasi paling efisien karena mampu menghasilkan tingkat peredaman respons dinamik dan kapasitas disipasi energi yang optimal mendekati Model B, namun dengan distribusi peredam yang lebih terintegrasi serta menghindari peningkatan kekakuan berlebih pada lantai bawah gedung.
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The implementation of Fluid Viscous Dampers (FVDs) serves as an effective passive control technology to attenuate dynamic responses and enhance the seismic resilience of multi-story structures. This study evaluates the seismic performance of an 8-story irregular reinforced concrete building by comparing three structural configurations: bare frame (Model A), conventional FVD installed at every story (Model B), and targeted FVD placement based on maximum interstory drift (Model C). Assessments were performed using Nonlinear Time History Analysis (NLTHA) subject to three scaled ground motion records (Imperial Valley, Loma Prieta, and Northridge). The analytical results indicate that the integration of FVDs contributes to the dynamic stiffness of the structure without inducing drastic shifts in the fundamental natural period. FVD installation effectively reduced peak roof displacements by up to 40.61% for Model B and 27.15% for Model C. Story drift evaluations revealed that Model A exceeded the allowable SNI drift limits at critical levels (Stories 2, 5, 6, and 7). The application of FVDs in Models B and C successfully controlled all peak drift ratios within the allowable threshold (<1.0%), maintaining the main structure within the elastic response range. In terms of energy dissipation mechanics, FVDs in Model B and Model C dissipated 24.23% - 31.40% and 17.10% - 26.40% of the total seismic input energy, respectively, thereby mitigating inertial forces and suppressing hysteretic energy demand on primary structural elements. From a technical standpoint, Model C is concluded to be the most efficient configuration, achieving optimal dynamic response reduction and energy dissipation performance comparable to Model B, while ensuring a more integrated damper distribution and preventing excessive stiffness concentration at lower structural levels.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Fluid Viscous Damper, Nonlinear Time History Analysis, ETABS, respons dinamik, simpangan antar lantai, Fluid Viscous Damper, Nonlinear Time History Analysis, ETABS, dynamc response , story drift
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User:	Windra Pranoto Simatupang
Date Deposited:	28 Jul 2026 02:30
Last Modified:	28 Jul 2026 02:30
URI:	http://repository.its.ac.id/id/eprint/138071

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