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All Journal Jurnal Ilmiah Kurva Teknik Jurnal Ilmiah Teknik Sipil Open Access DRIVERset
Made Hendra Prayoga
Universitas Udayana
Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Analisis Kinerja Gedung Tinggi dengan Diagrid sebagai Alternatif dari Struktur Baja Rangka Terbreis Ida Bagus Prastha Bhisama; Made Hendra Prayoga; I Putu Agus Putra Wirawan
Jurnal Ilmiah Kurva Teknik Vol. 12 No. 1 (2023): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36733/jikt.v12i1.6605

Abstract

Sejak akhir abad ke-19, rangka baja terbreis (BF) menjadi pilihan dalam desain gedung tinggi karena adanya bresing yang sangat efisien dalam menahan gaya lateral yang diterima struktur. Namun demikian, bresing tetap memiliki kekurangan utama yakni kurang estetiknya tampilan fasad gedung akibat penggunaan bresing yang juga dapat menghalangi area untuk bukaan pintu ataupun jendela serta kolom eksternal yang membuat struktur terkesan kaku. Struktur diagrid (DIA) muncul sebagai alternatif yang unggul secara estetik karena dengan penggunaan batang diagonal pada perimeter struktur membuat kolom vertikal tidak lagi diperlukan dan tampilan gedung menjadi lebih futuristik. Pada penelitian ini, kinerja struktur DIA dibandingkan dengan BF tipe-X (BFX) pada gedung 15 lantai di program SAP2000 dengan analisis statik non-linier pushover. Hasil analisis menunjukkan struktur DIA mampu menahan gaya geser dasar 14 -17% lebih besar dengan simpangan yang relatif lebih kecil dari struktur BFX yang menunjukkan bahwa DIA lebih kuat dalam menahan beban lateral akibat gempa. Dari hasil perbandingan taraf kinerja, struktur BFX dan DIA memiliki taraf kinerja IO (Immediate Occupancy) dengan sendi plastis pertama pada BFX terbentuk di bresing dan DIA di batang diagonalnya. Perbandingan berat kedua struktur menunjukkan rasio 1 : 2,176 (DIA : BFX) yang membuktikan bahwa DIA lebih ringan dari BFX. Berdasarkan hasil tersebut, DIA merupakan alternatif BFX yang tepat karena lebih efisien serta dapat menahan gaya geser dasar yang lebih besar.
DESIGN METHOD FOR STRONG COLUMNS-WEAK BEAMS FOR RISK CATEGORY IV BUILDINGS WITH TIME HISTORY PERFORMANCE ANALYSIS P Adi Yasa; Made Hendra Prayoga; Ida Bagus Prastha Bhisama
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p06

Abstract

Collapse pattern that considers the design of strong columns-weak beams in structures located in areas prone to large earthquakes such as Indonesia is an important thing that must be considered. When a large earthquake occurs in buildings with risk category IV based on SNI 1726-2019, the flexible parts of the beam elements are allowed to experience damage, while the columns must not experience soft-story mechanisms. To obtain a more realistic picture of it, in this study Nonlinear Time History Analysis (NLTHA) was chosen because it is considered able to provide a picture of the structural behavior that is closer to reality than Pushover Analysis. The results of the 2D time history performance analysis indicate that a beam-column capacity ratio of 1.2, as specified in SNI 2847-2019, renders the structure unable to achieve the expected collapse performance. By using a trial-and-error process to obtain a safe collapse hierarchy, an increase in column capacity of 2 to 3 times the SNI 2847-2019 column design is obtained. Based on this, in designing structures with risk category IV, apart from having to meet the terms and conditions of SNI the structure also needs to be analyzed for its performance using a more realistic methods such as NLTHA (portal) or 3D to ascertain whether the planned failure pattern can occur or not. This is important considering that the beam column capacity ratio in SNI is not sufficient to reach the Collapse Prevention (CP) condition of 95%.
DESIGN METHOD FOR STRONG COLUMNS-WEAK BEAMS FOR RISK CATEGORY IV BUILDINGS WITH TIME HISTORY PERFORMANCE ANALYSIS P Adi Yasa; Made Hendra Prayoga; Ida Bagus Prastha Bhisama
Jurnal Ilmiah Teknik Sipil Vol. 28 No. 1 (2024): Jurnal Ilmiah Teknik Sipil, Vol. 28 No. 1, Maret 2024
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITS.2024.v28.i01.p06

Abstract

Collapse pattern that considers the design of strong columns-weak beams in structures located in areas prone to large earthquakes such as Indonesia is an important thing that must be considered. When a large earthquake occurs in buildings with risk category IV based on SNI 1726-2019, the flexible parts of the beam elements are allowed to experience damage, while the columns must not experience soft-story mechanisms. To obtain a more realistic picture of it, in this study Nonlinear Time History Analysis (NLTHA) was chosen because it is considered able to provide a picture of the structural behavior that is closer to reality than Pushover Analysis. The results of the 2D time history performance analysis indicate that a beam-column capacity ratio of 1.2, as specified in SNI 2847-2019, renders the structure unable to achieve the expected collapse performance. By using a trial-and-error process to obtain a safe collapse hierarchy, an increase in column capacity of 2 to 3 times the SNI 2847-2019 column design is obtained. Based on this, in designing structures with risk category IV, apart from having to meet the terms and conditions of SNI the structure also needs to be analyzed for its performance using a more realistic methods such as NLTHA (portal) or 3D to ascertain whether the planned failure pattern can occur or not. This is important considering that the beam column capacity ratio in SNI is not sufficient to reach the Collapse Prevention (CP) condition of 95%.
Co-Authors Bhisama, Ida Bagus Prastha I Putu Agus Putra Wirawan Ida Bagus Prastha Bhisama P Adi Yasa