Perencanaan Struktur Gedung Perkantoran Khusus Kategori Risiko IV Dengan Konstruksi Baja Sistem Rangka Bresing Eksentris (SRBE)

Naritanuiza, Kalea (2026) Perencanaan Struktur Gedung Perkantoran Khusus Kategori Risiko IV Dengan Konstruksi Baja Sistem Rangka Bresing Eksentris (SRBE). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia terletak di pertemuan tiga lempeng tektonik sehingga rawan gempa bumi. Kondisi ini menuntut perencanaan struktur bangunan yang mampu menahan gaya lateral akibat gempa. Struktur baja dengan sistem Sistem Rangka Bresing Eksentris (SRBE) membuat kombinasi kekakuan elastis tinggi dan kapasitas disipasi energi yang baik, mengatasi keterbatasan dari Sistem Rangka Pemikul Momen (SRPM) dan Sistem Rangka Bresing Konsentris (SRBK). Proyek akhir ini memodifikasi struktur Gedung Perkantoran Kategori Risiko IV di Surabaya, dari struktur beton bertulang Sistem Rangka Pemikul Momen Khusus (SRPMK) menjadi struktur baja SRBE konfigurasi inverted V, untuk meningkatkan performa seismik serta efisiensi biaya pondasi. Metodologi perencanaan mencakup studi literatur, pengumpulan data eksisting, analisis beban gempa dan pembebanan sesuai SNI, serta pemodelan dan analisis struktur dengan ETABS. Evaluasi kinerja struktur mencakup kontrol partisipasi massa, periode fundamental, gaya geser dasar seismik, simpangan antar lantai, pengaruh P-Delta, serta ketidakberaturan struktur. Perencanaan elemen struktural meliputi kolom, balok, link, dan bresing untuk struktur atas, serta pondasi tiang pancang dan pile cap untuk struktur bawah. Perhitungan juga membandingkan anggaran biaya pondasi antara struktur eksisting dan struktur rencana. Hasil analisis menunjukkan partisipasi massa struktur rencana mencapai 91,62% pada arah X dan 91,79% pada arah Y, memenuhi syarat minimum 90%. Periode fundamental struktur adalah 0,595 detik arah X dan 0,697 detik arah Y, masih di bawah batas atas 0,981 detik. Gaya geser dasar seismik setelah penskalaan mencapai 4.794,67 kN pada kedua arah. Simpangan antar lantai maksimum mencapai 14,365 mm, jauh di bawah simpangan izin 42 mm. Struktur primer menggunakan WF 588x300x12x20 untuk balok induk, link, dan balok di luar link, H 300x300x10x15 untuk bresing, serta KC 700x300x16x28, KC 600x300x14x22, dan KC 500x300x16x22 untuk kolom K1 hingga K3. Struktur bawah menggunakan tiang pancang diameter 50 cm kedalaman 21 m, dengan pile cap PC1 2500x2500x1000 mm dan PC2 1000x2500x1000 mm. Anggaran biaya pemasangan pondasi struktur rencana sebesar Rp23.631.530.000, lebih hemat 34,13% dibandingkan struktur eksisting sebesar Rp35.875.742.000.

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Indonesia is located at the junction of three tectonic plates, making it prone to earthquakes. This condition requires structural design capable of withstanding lateral forces caused by earthquakes. Steel structures using the Eccentric Braced Frame (EBF) System combine high elastic stiffness with good energy dissipation capacity, thereby overcoming the limitations of the Moment-Resisting Frame (MRF) System and the Concentric Braced Frame (CBF) System. This final project modifies the structure of a Risk Category IV office building in Surabaya, converting it from a reinforced concrete Special Moment-Resisting Frame System (SMRF) to an inverted V-configuration SRBE steel structure, in order to improve seismic performance and foundation cost efficiency. The planning methodology includes a literature review, collection of existing data, analysis of seismic loads and loading in accordance with SNI, as well as structural modeling and analysis using ETABS. Structural performance evaluation includes checks for mass participation, fundamental period, seismic base shear, inter-story drift, P-Delta effects, and structural irregularities. The design of structural elements includes columns, beams, links, and bracing for the superstructure, as well as pile foundations and pile caps for the substructure. The calculations also compare the foundation cost estimates between the existing structure and the proposed structure. The analysis results show that the structural mass participation of the design reaches 91.62% in the X direction and 91.79% in the Y direction, meeting the minimum requirement of 90%. The structural fundamental period is 0.595 seconds in the X direction and 0.697 seconds in the Y direction, both of which remain below the upper limit of 0.981 seconds. The seismic base shear force after scaling reaches 4,794.67 kN in both directions. The maximum inter-story drift reached 14.365 mm, well below the allowable drift of 42 mm. The primary structure uses WF 588x300x12x20 for main beams, links, and beams outside the links; H 300x300x10x15 for bracing; and KC 700x300x16x28, KC 600x300x14x22, and KC 500x300x16x22 for columns K1 through K3. The foundation structure uses 50 cm diameter piles driven to a depth of 21 m, with pile caps PC1 measuring 2500x2500x1000 mm and PC2 measuring 1000x2500x1000 mm. The estimated cost for installing the planned foundation structure is Rp23,631,530,000, which is 34.13% lower than
the cost of the existing structure, which is Rp35,875,742,000.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Sistem Rangka Bresing Eksentris (SRBE), Perencanaan Struktur Baja, ETABS, Efisiensi Biaya Pondasi, Eccentrically Braced Frame (EBF), Steel Structure Design, ETABS, Cost-Effective Foundations
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) 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.
Divisions:	Faculty of Vocational > 22301-Civil Infrastructure Engineering (D4)
Depositing User:	Kalea Naritanuiza
Date Deposited:	01 Aug 2026 04:04
Last Modified:	01 Aug 2026 04:04
URI:	http://repository.its.ac.id/id/eprint/142087

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