Modifikasi Perencanaan Struktur Gedung Mall Dan Hotel 13 Lantai Mengunakan Baja Sistem Eccentrically Braced Frames (Ebf) Di Magelang-Jawa Tengah

Hidayat, Andika Rahman (2026) Modifikasi Perencanaan Struktur Gedung Mall Dan Hotel 13 Lantai Mengunakan Baja Sistem Eccentrically Braced Frames (Ebf) Di Magelang-Jawa Tengah. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proyek Mall dan Hotel 13 lantai di Kota Magelang menunjukkan bahwa eksisting sistem beton bertulang tidak memenuhi batas simpangan antar lantai sesuai SNI 1726:2019. Selain itu, efek P–Delta menunjukkan nilai yang melampaui batas stabilitas, sehingga struktur berpotensi tidak stabil dan harus didesain ulang berdasarkan SNI 1726:2019 Pasal 7.8.7 dengan penambahan kekakuan lateral. Dalam tugas akhir ini, sistem struktur dimodifikasi dari beton bertulang menjadi struktur baja dengan sistem Eccentrically Braced Frame (EBF) yang mampu memberikan kekakuan lateral tinggi dan disipasi energi, sehingga dapat memperbaiki respons P–Delta dan mengurangi ketidakberaturan bangunan. Metodologi perencanaan meliputi studi literatur, pengumpulan data eksisting, penentuan beban gravitasi dan beban gempa sesuai SNI 1727:2020 dan SNI 1726:2019, serta pemodelan dan analisis struktur tiga dimensi menggunakan ETABS V22. Evaluasi kinerja struktur dilakukan melalui analisis partisipasi massa, periode getar fundamental, gaya geser dasar, simpangan antar lantai, dan pengaruh efek P–Delta. Selanjutnya dilakukan perencanaan elemen struktural utama seperti kolom, balok, link, dan bracing, serta struktur bawah berupa pondasi tiang pancang dan pilecap, berdasarkan standar nasional dan internasional yang berlaku. Hasil penelitian menunjukkan bahwa modifikasi struktur beton bertulang menjadi struktur baja dengan sistem EBF terbukti mampu meningkatkan performa seismik, efisiensi pondasi, serta memberikan penghematan biaya konstruksi pada bangunan bertingkat di wilayah rawan gempa. Hasil perbandingan menunjukkan bahwa struktur baja dengan sistem Eccentrically Braced Frame (EBF) tipe Inverted V-Braced memiliki kinerja yang lebih baik dibandingkan struktur beton bertulang eksisting. Struktur modifikasi mampu mengurangi berat struktur sebesar 5,98%, menurunkan jumlah tiang pancang sebesar 9,88%, serta mengurangi periode fundamental sebesar 50,25%. Selain itu, rasio partisipasi massa, simpangan antar lantai, pengaruh P–Delta, dan ketidakberaturan struktur telah memenuhi persyaratan SNI 1726:2019. Dari aspek ekonomi, penerapan sistem EBF menghasilkan penghematan biaya konstruksi sebesar Rp1.004.460.610 atau sekitar 2,42%. Hasil tersebut menunjukkan bahwa sistem EBF mampu meningkatkan performa seismik, efisiensi struktur, dan efisiensi biaya konstruksi pada bangunan bertingkat di wilayah rawan gempa.
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The 13-story Mall and Hotel project in Magelang City revealed that the existing reinforced concrete structural system did not satisfy the interstory drift limits specified in SNI 1726:2019. In addition, the P–Delta effect exceeded the allowable stability limit, indicating that the structure had the potential to become unstable and therefore required redesign in accordance with SNI 1726:2019 Clause 7.8.7 through the addition of lateral stiffness. In this undergraduate thesis, the structural system was modified from reinforced concrete to a steel structure utilizing an Eccentrically Braced Frame (EBF) system, which provides high lateral stiffness and excellent energy dissipation capacity, thereby improving the P–Delta response and eliminating structural irregularities. The research methodology consisted of a literature review, collection of existing structural data, determination of gravity and seismic loads in accordance with SNI 1727:2020 and SNI 1726:2019, and three-dimensional structural modeling and analysis using ETABS V22. Structural performance was evaluated based on mass participation ratio, fundamental period, base shear, interstory drift, and P–Delta effects. Subsequently, the primary structural components, including columns, beams, links, and bracing members, as well as the substructure consisting of pile foundations and pile caps, were designed in accordance with applicable Indonesian National Standards (SNI) and relevant international design codes. The comparative results indicate that the proposed Inverted V-Braced Eccentrically Braced Frame (EBF) steel structure outperformed the existing reinforced concrete structure. The modified structure achieved a 5.98% reduction in structural weight, a 9.88% reduction in the number of pile foundations, and a 50.25% reduction in the fundamental period. In addition, the mass participation ratio, interstory drift, P–Delta effect, and structural irregularities satisfied the requirements of SNI 1726:2019. From an economic perspective, the EBF system reduced the construction cost by IDR 1,004,460,610, representing a 2.42% cost saving. These findings demonstrate that the EBF system enhances seismic performance, improves structural efficiency, and reduces construction costs for multi-story buildings located in seismic regions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Baja, Eccentrically Braced Frame (EBF), ETABS, Gedung Bertingkat, Ketahanan Gempa; Steel, Eccentrically Braced Frame (EBF), Earthquake Resistance, ETABS, High-Rise Building.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA174 Computer-aided design. T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method 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:	Andika Rahman Hidayat
Date Deposited:	04 Aug 2026 08:46
Last Modified:	04 Aug 2026 08:46
URI:	http://repository.its.ac.id/id/eprint/141700

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