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All Journal BERKALA SAINSTEK Rekayasa Sipil BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil SIKLUS: Jurnal Teknik Sipil Jurnal Teknika Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) Jurnal Teknik Sipil
Ketut Aswatama Wiswamitra
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Jember
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Transportation

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Journal : Rekayasa Sipil

 1 
Pengaruh Variasi Bentuk Penampang Kolom Terhadap Perilaku Elemen Struktur Akibat Beban Gempa Krisnamurti Krisnamurti; Ketut Aswatama Wiswamitra; Willy Kriswardhana
Rekayasa Sipil Vol 7, No 1 (2013)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (919.614 KB)

Abstract

Kolom berfungsi sebagai penerus beban–beban dari balok dan pelat ke tanah dasar melalui fondasi. Kolom berfungsi menahan beban aksial tekan dengan atau tanpa momen lentur. Kolom memegang peranan penting pada keutuhan struktur, apabila kolom mengalami kegagalan akan berakibat pada keruntuhan struktur bangunan atas gedung. Kolom persegi dan kolom persegi panjang lebih banyak digunakan daripada kolom lingkaran. Padahal, bentuk kolom lingkaran dipercaya mempunyai kekuatan menahan beban aksial yang lebih besar dibandingkan kolom persegi dan persegi panjang. Kolom bersengkang lingkaran juga terbukti mempunyai daktilitas yang lebih baik dibandingkan kolom persegi dan persegi panjang. Oleh karena itu, penelitian mengenai pengaruh bentuk penampang kolom terhadap keruntuhan struktur gedung perlu dilakukan. Penelitian ini bertujuan untuk mengetahui bentuk kolom mana yang memberikan pengaruh terbaik dalam mencegah keruntuhan struktur gedung. Penelitian ini menggunakan model gedung dengan penampang kolom persegi, persegi panjang dan lingkaran. Beban gempa dihitung dengan menggunakan metode statik ekuivalen. Elemen struktur masing – masing gedung diperiksa kapasitasnya dan dilakukan pemeriksaan keruntuhan setelah ditambahkan beban gempa. Dari hasil perhitungan didapatkan bahwa balok pada struktur gedung dengan kolom persegi panjang lebih cepat runtuh daripada balok pada struktur gedung dengan kolom persegi dan lingkaran, baik pada keruntuhan lentur maupun keruntuhan geser. Kapasitas kolom lingkaran dalam menerima beban aksial lebih besar 11% daripada kolom persegi dan persegi panjang. Dari analisis kapasitas penampang didapatkan bahwa kolom persegi panjang dapat menahan momen arah X lebih baik daripada kolom persegi dan lingkaran, namun sebaliknya kolom persegi panjang lebih lemah dalam menerima momen arah Y daripada kolom persegi dan lingkaran. Kolom persegi dan lingkaran relatif stabil dalam menerima momen dari arah X maupun Y. 
Analisis Kinerja Struktur Gedung Bertingkat Menggunakan Sistem Rangka Pemikul Momen Khusus (SRPMK) pada Pembangunan Rumah Susun Cakung Jakarta Timur Hesty Auliya Dewi; Erno Widayanto; Ketut Aswatama Wiswamitra
Rekayasa Sipil Vol. 17 No. 3 (2023): Rekayasa Sipil Vol. 17 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.03.2

Abstract

Analysis of the structural performance of the Cakung house in East Jakarta aims to determine the behavior and performance of the building by using the Special Moment Bearing Frame system (SRPMK). Evaluation is carried out on the performance of the building structure by using a structural analysis aid program. And the lateral force capacity that the system can withstand is 1592432.05 Kgf in the X direction and 643948.61 Kgf in the Y direction. Where the pushover analysis using the ATC 40 method, the melting point occurred for the first time at a displacement of 23.57 cm in the X direction and 7.28 cm in the Y direction. And serious damage occurred at the displacement of 77.49 cm in the X direction and 94.84 in the Y direction. The analysis found that the drift ratio value of the maximum total deviation and the maximum inelastic deviation that occurs in the structure is less than 1%. So that the level of performance of the design is in the category of Immediate Occupancy (IO).
Perbandingan Nilai Simpangan Horizontal yang Menggunakan Bresing Tipe Diagonal dengan Inverted V dalam Menahan Gaya Lateral pada Studi Kasus Hotel Loji Kridanggo Boyolali Ratu Adila; Erno Widayanto; Ketut Aswatama Wiswamitra
Rekayasa Sipil Vol. 17 No. 3 (2023): Rekayasa Sipil Vol. 17 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.03.3

Abstract

Application of a bracing skeletal system is an additional steel structure that can strengthen a column by transferring weights and force to the received column. The broad use of flensa steel bracing type v diagonally and inverted gradually on each floor. It is possible to determine the junction of the junction if the building is brewed and not braced. The junction to cross section of the building does not use bracing, which USES bracing type v diagonal and inverted is 0.385:0.321:0.294. Bracing inverted type v is more rigid and sturdy than bracing diagonal types shown by the deviation of horizontal bracing the inverted type v smallest and volume 12.5 percent greater than bracing the type diagonal.
Comparison of Behavior of Reinforced Concrete Dual-system Structure (Frame-Shear Wall) and Steel Dual-system Structure (Frame- Special Plate Shear Wall) in High Rise Building (Case Study: IT Mandiri Bumi Slipi Building) Auliya Amir, Ahmad Yusron; Krisnamurti; Wiswamitra, Ketut Aswatama
Rekayasa Sipil Vol. 18 No. 3 (2024): Rekayasa Sipil Vol. 18 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.03.13

Abstract

Indonesia is vulnerable to earthquakes due to its location on the “Ring of Fire,” recent research highlights the potential for megathrust earthquakes off the southern coasts of Java and Sumatra. Researching earthquake-resistant building structures' behavior is very important to obtain a more effective and efficient structure. Materials, structural types, and forces such as dead loads, live loads, and earthquake loads influence the structural behavior of high-rise buildings. IT Mandiri Bumi Slipi building, with a height of 149.6 m and 32 floors, exhibits structural irregularities vulnerable to earthquakes. High-rise buildings require earthquake-resistant systems, such as dual-system structures incorporating frames and shear walls. This study compares the behavior of reinforced concrete and steel structures (special plate shear walls) in a 32-story building, focusing on structural weight, beam bending moment, base shear force, and seismic displacement. The analysis used ETABS software and LRFD principles, with spectrum response analysis for seismic loads. Results showed that the reinforced concrete model had seismic base shear forces of 21578.87 kN in the X direction and 21577.91 kN in the Y direction, with drifts of 276.664 mm in the X direction and 141.33 mm in the Y direction, and the largest beam bending moment of 6713.27 kN-m. The steel model shows seismic base shear forces of 10927.52 kN in the X direction and 10929.99 kN in the Y direction, with drifts of 250.31 mm in the X direction and 119.33 mm in the Y direction, and the largest beam bending moment of 4221.82 kN-m. Steel structures are lighter and more effective at resisting seismic loads than concrete, with a weight of 257801.8 kN versus 508305.6 kN and smaller drift and shear force. These findings serve as a reference for innovation in earthquake-resistant construction of high-rise buildings.
Co-Authors Anita Trisiana, Anita Auliya Amir, Ahmad Yusron Dhita Agustin Dwi Nurtanto Erno Widayanto Erno Widayanto, Erno Hadi, Patria Yoga Pratama Hesty Auliya Dewi Hudha Yuka Mahendra Isvahani, Shifa Ikrima Hayya Jojok Widodo Soetjipto Krisnamurti Krisnamurti Ma'arif, Achmad Zakaria Muhammad Amri Imaduddin Maghribi Mustika Hari, Hanisya Indah Octavia, Vita Sania Ratu Adila Rizky Miftahul Willy Kriswardhana