Rahmawati, Clarissa Dewi (2026) Perencanaan Struktur Pada Gedung Kuliah Bersama 21 Lantai di Semarang dengan Menggunakan Pall Friction Damper. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gedung Kuliah Bersama di Semarang ini merupakan gedung perkuliahan setinggi 21 lantai (96,75 m) di Tembalang, Semarang, yang pada kondisi eksisting menggunakan sistem ganda berupa rangka pemikul momen khusus dipadukan dinding geser sebagai penahan gaya lateral gempa. Ketergantungan pada dinding geser membuka peluang mengkaji alternatif sistem struktur yang lebih ringkas namun tetap mampu mengendalikan respons gedung terhadap gempa, yaitu dengan menerapkan perangkat peredam gesekan (Pall Friction Damper) sebagai pengganti dinding geser. Tugas akhir ini bertujuan merencanakan struktur alternatif gedung tersebut dan mengevaluasi kelayakannya sebagai sistem pengendali respons gempa.Metodologi disusun melalui pemodelan struktur tiga dimensi bertahap: Struktur eksisting Dual System SRPMK, struktur tanpa shearwall SRPMB, lalu struktur alternatif dengan Pall Friction Damper SRPMB yang dimodelkan sebagai elemen penghubung aksial pada breising, dengan posisi dan dimensi damper divariasikan tiap lantai. Struktur dievaluasi dari simpangan antar lantai, periode getar, gaya geser dasar, kapasitas elemen, kebutuhan tulangan, sambungan, metode pemasangan damper, dan biaya konstruksi. Hasil dari penelitian ini didapatkan struktur alternatif tanpa Pall Friction Damper mengalami simpangan antar lantai melebihi batas izin, dengan nilai maksimum 67,485 mm (arah X) dan 89,207 mm (arah Y). Setelah penambahan damper, simpangan maksimum turun menjadi 35,915 mm (X) dan 38,752 mm (Y), memenuhi batas izin 40 mm. Periode getar struktur alternatif sebesar 2,77 detik (X) dan 2,60 detik (Y), dengan gaya geser dasar terskala 23.098,30 kN (X) dan 23.087,30 kN (Y). Kebutuhan tulangan meningkat dari 249.728,28 kg menjadi 360.192,44 kg (pelat), 553.104,56 kg menjadi 690.073,57 kg (balok), 522.091,12 kg menjadi 522.447,57 kg (kolom), dan 122.232,91 kg menjadi 159.364,46 kg (pilecap), dengan Rencana Anggaran Biaya (RAB) pembesian meningkat dari Rp21.322.410.000,00 pada struktur eksisting menjadi Rp25.524.000.000,00 pada struktur alternatif, atau mengalami kenaikan sebesar Rp4.201.590.000,00 (19,70%). Pemasangan damper dilakukan melalui fabrikasi profil baja, baseplate, dan gusset plate, pemasangan angkur, perakitan damper dengan breising, serta penyambungan las dan baut mutu tinggi.
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The Multipurpose Lecture Hall in Semarang is a 21-story lecture building (96.75 m high) located in Tembalang, Semarang, which in its existing condition uses a dual system consisting of a special moment-resisting frame combined with shear walls as the lateral seismic force-resisting system. The reliance on shear walls opens the possibility of studying a more compact alternative structural system that is still capable of controlling the building's seismic response, namely by applying friction-damping devices (Pall Friction Dampers) as a substitute for the shear walls. This final project aims to design an alternative structure for the building and to evaluate its feasibility as a seismic response-control system.The methodology was developed through staged three-dimensional structural modeling: the existing Dual System (Special Moment Resisting Frame, SRPMK) structure, the structure without shear walls (Ordinary Moment Resisting Frame, SRPMB), and the alternative SRPMB structure with Pall Friction Dampers, which were modeled as axial link elements on the braces, with the position and dimensions of the dampers varied on each floor. The structure was evaluated in terms of inter-story drift, natural period, base shear, element capacity, reinforcement requirements, connections, damper installation method, and construction cost.The results of this study show that the alternative structure without Pall Friction Dampers experienced inter-story drift exceeding the allowable limit, with a maximum value of 67.485 mm (X-direction) and 89.207 mm (Y-direction). After the addition of dampers, the maximum drift decreased to 35.915 mm (X) and 38.752 mm (Y), satisfying the 40 mm allowable limit. The natural period of the alternative structure was 2.77 seconds (X) and 2.60 seconds (Y), with a scaled base shear of 23,098.30 kN (X) and 23,087.30 kN (Y). Reinforcement requirements increased from 249,728.28 kg to 360,192.44 kg (slabs), from 553,104.56 kg to 690,073.57 kg (beams), from 522,091.12 kg to 522,447.57 kg (columns), and from 122,232.91 kg to 159,364.46 kg (pile caps), with the reinforcement Bill of Quantities (RAB) increasing from Rp21,322,410,000.00 for the existing structure to Rp25,524,000,000.00 for the alternative structure, an increase of Rp4,201,590,000.00 (19.70%). Damper installation was carried out through the fabrication of steel profiles, baseplates, and gusset plates, anchor bolt installation, assembly of the dampers with the braces, and welding and high-tension bolt connections.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Pall Friction Damper, Sistem Rangka Pemikul Momen Biasa, Analisis Respon Spektrum, Kinerja Seismik, Ordinary Moment Resisting Frame, Response Spectrum Analysis, Seismic Performance |
| 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 > TA Engineering (General). Civil engineering (General) > TA660.F7 Structural frames. T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction T Technology > TH Building construction > TH1095 Earthquakes and building |
| Divisions: | Faculty of Vocational > 22301-Civil Infrastructure Engineering (D4) |
| Depositing User: | Clarissa Dewi Rahmawati |
| Date Deposited: | 03 Aug 2026 01:03 |
| Last Modified: | 03 Aug 2026 01:03 |
| URI: | http://repository.its.ac.id/id/eprint/141010 |
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