Albab, Ulul (2026) Perencanaan Struktur Hotel 24 Lantai Menggunakan Struktur Komposit Sistem Rangka Bresing Anti-tekuk (SRBA). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Jakarta merupakan salah atu kota yang terletak pada zona tektonik aktif yang berada di jalur pacific ring of fire. Faktor tersebut mempengaruhi struktur bertingkat tinggi seperti hotel atau apartemen karena adanya simpangan antar lantai dan perlu kekuatan yang cukup untuk menjaga kekakuan struktur. Dalam perencanaan hotel ini memiliki 24 lantai dengan struktur Utama yaitu baja dan beton komposit. Penerapan struktur komposit direncanakan tipe Concrete Filled Tube (CFT) karena memiliki kelebihan dapat mengurangi dimensi profil dan memiliki kinerja yang baik dalam menahan gaya Tarik dan tekan. Sebagai pengaku struktur digunakan Sistem Rangka Bresing Anti-tekuk (SRBA) karena dapat mengantisipasi terjadinya tekukan apabila terjadi kompresi sehingga dapat menahan beban lebih besar daripada bresing konvensional. Tahapan awal dalam proyek akhir ini yaitu preliminary design, pembebanan dan pemodelan struktur berdasarkan geometri bangunan. Selanjutnya struktur dianalisis menggunakan parameter desain gempa yaitu R = 8, Ω = 2,5 dan Cd = 5 dengan variasi 3 konfigurasi bresing yaitu Chevron V, Inverted V dan X Multistory untuk mengetahui kelebihan masing-masing variasi, sehingga digunakan sebagai perencanaan bresing. Untuk rencana kebutuhan struktur utama, sambungan dan perencanaan struktur bawah ditentukan berdasarkan gaya dalam struktur. Hasil seluruh perencanaan kemudian dituangkan dalam bentuk gambar kerja yang selanjutnya digunakan untuk perhitungan anggaran biaya. Tahapan terakhir metode pelaksanaan untuk menggambarkan proses pengerjaan dilapangan sesuai struktur yang ditinjau. Hasil menunjukkan sistem struktur dengan Chevron V memiliki keunggulan dalam menahan ketidakberaturan horziontal dengan rasio torsi rata-rata 1,25 dan mengurangi torsi berlebih. Simapangan antar lantai maksimuma arah X sebesar 32,84 mm dan arah Y sebesar 32,97 mm yang masih dibawah batas izin sebesar 174 mm. Berdasarkan rencana anggaran biaya pondasi bored pile yang menggunakan struktur baja dapat memberikan efisiensi biaya sebesar 49,55% dibandingkan struktur pondasi bored pile eksisiting dengan struktur beton bertulang.
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Jakarta is a city located in an active tectonic zone along the Pacific Ring of Fire. This factor affects high-rise structures such as hotels and apartments due to the interfloor displacements and the need for sufficient strength to maintain structural rigidity. The hotel is planned to have 24 floors, with a main structure consisting of steel and composite concrete. The composite structure is planned to be a Concrete Filled Tube (CFT) type due to its advantages in reducing profile dimensions and its excellent performance in resisting tensile and compressive forces. An Anti-Buckling Bracing Frame System (SRBA) is used as structural stiffeners because it can anticipate buckling during compression, allowing it to withstand greater loads than conventional bracing. The initial stages of this final project include preliminary design, loading, and structural modeling based on the building geometry. The structure is then analyzed using earthquake design parameters: R = 8, Ω = 2.5, and Cd = 5, with three bracing configurations: Chevron V, Inverted V, and X Multistory to determine the advantages of each configuration, which are then used in bracing design. For the main structural requirements plan, connections and substructure design were determined based on the forces within the structure. The results of all planning were then presented in the form of working drawings, which were then used for budget calculations. The final stage of the implementation method was to illustrate the field work process according to the structure being reviewed. The results showed that the Chevron V structural system had the advantage of resisting horizontal irregularities with an average torque ratio of 1.25 and reducing excess torque. The maximum interfloor deflection in the X direction was 32.84 mm and in the Y direction was 32.97 mm, which is still below the permitted limit of 174 mm. Based on the budget plan, bored pile foundations using steel structures can provide a cost efficiency of 49.55% compared to existing bored pile foundations with reinforced concrete structures.
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