Khuluqi, Muhammad Ahsanul (2026) Evaluasi Dan Perkuatan Struktur Gedung Rumah Sakit Di Surabaya Menggunakan Fluid Viscous Damper (FVD) Dan Carbon Fiber Reinforced Polymer (CFRP). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Ketidakberaturan struktur pada bangunan bertingkat menyebabkan distribusi respons gempa tidak merata, sehingga simpangan antar tingkat dan gaya dalam elemen struktur meningkat. Kondisi ini teridentifikasi pada gedung rumah sakit di Surabaya, dengan rasio simpangan antar tingkat maksimum terhadap rata-rata (Δmax/Δavg) melebihi batas izin pada salah satu ujung struktur, serta simpangan antar tingkat pada sejumlah lantai melampaui batas deformasi 1% tinggi lantai. Penelitian ini bertujuan mengevaluasi efektivitas kombinasi Fluid Viscous Damper (FVD) dan Carbon Fiber Reinforced Polymer (CFRP) sebagai strategi perkuatan pada gedung rumah sakit eksisting. Analisis dilakukan dalam dua tahap, yaitu analisis struktur eksisting dan analisis struktur perkuatan. Analisis struktur eksisting menggunakan metode dinamis respons spektrum dengan parameter gempa sistem ganda. Analisis struktur perkuatan terdiri dari dua bagian, yaitu preliminary design FVD berdasarkan parameter gempa Sistem Rangka Pemikul Momen Biasa (SRPMB). Trial and error penempatan FVD dilakukan untuk memperoleh tiga alternatif konfigurasi, kemudian dipilih satu konfigurasi berdasarkan pertimbangan teknis dan ekonomis. Selanjutnya dilakukan analisis dinamis struktur eksisting yang telah diperkuat FVD untuk menjadi dasar perancangan sambungan FVD dan perkuatan lokal menggunakan CFRP. Hasil perhitungan menunjukkan konfigurasi optimum sebanyak 12 unit FVD model 20870 dari Taylor Devices Inc. yang dipasang diagonal terhadap struktur beton eksisting. Konfigurasi ini menurunkan periode struktur sebesar 8,57%, meningkatkan gaya geser dasar sebesar 0,45% pada arah X dan 0,49% pada arah Y, serta mereduksi displacement maksimum struktur sebesar 15,94% arah X dan 5,48% arah Y. Penambahan FVD juga mereduksi simpangan antar tingkat maksimum sebesar 14,37% serta menurunkan rasio simpangan antar tingkat maksimum terhadap rata-rata (Δmax/Δavg) hingga memenuhi batas izin. Perkuatan lokal menggunakan Sika Carbodur S1012 direncanakan untuk meningkatkan kapasitas lentur balok, sedangkan SikaWrap 231C digunakan untuk meningkatkan kapasitas geser balok. Estimasi biaya pelaksanaan perkuatan menggunakan kombinasi FVD dan CFRP sebesar Rp3.239.817.000,00. Hasil penelitian ini menunjukkan bahwa kombinasi FVD dan CFRP mampu menjadi alternatif perkuatan untuk meningkatkan respons struktur gedung rumah sakit terhadap beban gempa.
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Structural irregularity in multi-story buildings causes uneven distribution of seismic response, thereby increasing inter-story drift and internal forces in structural elements. This condition was identified in a hospital building in Surabaya, where the ratio of maximum to average inter-story drift (Δmax/Δavg) exceeded the allowable limit at one edge of the structure, and inter-story drift at several floors exceeded the 1% story-height deformation limit. This study aims to evaluate the effectiveness of combining Fluid Viscous Dampers (FVD) and Carbon Fiber Reinforced Polymer (CFRP) as a retrofitting strategy for the existing hospital building. The analysis was conducted in two stages: analysis of the existing structure and analysis of the retrofitted structure. The existing structure was analyzed using the response spectrum dynamic method with dual-system seismic parameters. The retrofit analysis consisted of two parts, beginning with a preliminary FVD design based on the seismic parameters of an Ordinary Moment Resisting Frame (OMRF). A trial-and-error approach to FVD placement was performed to obtain three configuration alternatives, from which one configuration was selected based on technical and economic considerations. A dynamic analysis of the FVD-retrofitted structure was then conducted to serve as the basis for FVD connection design and local strengthening using CFRP. The results show that the optimum configuration consists of 12 units of FVD model 20870 from Taylor Devices Inc., installed diagonally on the existing concrete structure. This configuration reduced the structural period by 8.57%, increased the base shear by 0.45% in the X-direction and 0.49% in the Y-direction, and reduced the maximum structural displacement by 15.94% in the X-direction and 5.48% in the Y-direction. The addition of FVD also reduced the maximum inter-story drift by 14.37% and decreased the ratio of maximum to average inter-story drift (Δmax/Δavg) to within the allowable limit. Local strengthening using Sika Carbodur S1012 was designed to increase the flexural capacity of beams, while SikaWrap 231C was used to increase their shear capacity. The estimated implementation cost for the combined FVD and CFRP retrofit is IDR 3,239,817,000. These findings indicate that the combination of FVD and CFRP can serve as a viable retrofitting alternative to improve the seismic performance of hospital buildings
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | CFRP, FVD, Ketidakberaturan struktur, Perkuatan, Simpangan Antar Lantai CFRP, FVD, Interstory Drift, Retrofitting, Structural Irregularity |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) |
| Divisions: | Faculty of Vocational > 22301-Civil Infrastructure Engineering (D4) |
| Depositing User: | Muhammad Ahsanul Khuluqi |
| Date Deposited: | 03 Aug 2026 06:08 |
| Last Modified: | 03 Aug 2026 06:08 |
| URI: | http://repository.its.ac.id/id/eprint/141573 |
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