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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Journal of Infrastructure Planning and Engineering
Cintantya Budi Casita
Department Of Civil Engineering, Faculty Of Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur
Civil Engineering, Building, Construction & Architecture Engineering Industrial & Manufacturing Engineering Transportation

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Column structure strengthening with FRP (Fiber Reinforced Polymer) due to story addition I Wayan Maesa Andreasnata; I Nengah Sinarta; Ni Komang Armaeni; I. P. Ellsa Sarassantika; Dang Thanh Trung; Cintantya Budi Casita; Roro Sulaksitaningrum; Sudarno P. Tampubolon
Journal of Infrastructure Planning and Engineering Vol. 1 No. 1 (2022)
Publisher : Master Program of Infrastructure and Environmental Engineering, Postgraduate Program, Warmadewa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/jipe.1.1.2022.38-45

Abstract

This study focuses on strengthening scheme of an existing structure with added story. The addition of a new story increases gravitational loading, which affects the seismic and wind responses of the structure and, as a consequence, the loading combination. To ensure the structure’s capacity requirement, the strengthening scheme uses CFRP (Carbon Fiber Reinforced Polymer). In order to adequately define the structure's performance, a series of structural analyses were performed. The structure's state before and after story addition, subsequently the state after CFRP strengthening, were evaluated. It is demonstrated that the additional story to the structure causes an exceedance in internal forces; however, the strengthening with CFRP is sufficient to withstand these forces, proving that the strengthening scheme is effective and beneficial.
Comparison of Seismic Performance of L-Shaped Multi-Story Structures with Eccentrically Braced Frame and Friction Dampers Andhika Daffa Ramadhan; Roro Sulaksitaningrum; I Putu Ellsa Sarassantika; Cintantya Budi Casita
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10115

Abstract

At the stage of planning the design of an asymmetric multi-story structure, the seismic performance of the structure must be considered, especially in earthquake prone areas. A structure can increase its capacity to withstand seismic loads by using an appropriate bracing system, such as eccentric bracing or utilizing seismic dampers like friction dampers. This research aims to compare five L-shaped multi-story steel structural models using Eccentrically Braced Frame and friction dampers. The models that focus of this research are model 1 (Moment Resisting Frame), model 2 (structure with diagonal EBF), model 3 (structure with inverted V EBF), model 4 (structure with diagonal friction damper), and model 5 (structure with chevron friction damper). To analyze each model from the elastic condition to the collapse condition, the ETABS software was used, which employs a nonlinear static pushover approach. As a result, all evaluated structural models meet the Immediate Occupancy performance level, which means that all five models can still function normally even after an earthquake occurs. Because of the higher ductility capacity and better inelastic behavior compared to MRF and EBF structures, structures with friction dampers are the best choice for use in steel structures.
Optimasi Kinerja Seismik Sambungan Struktur untuk Aplikasi Rekayasa Teknik Sipil Budi Suswanto; Cintantya Budi Casita; Chien-Kuo Chiu; Triwulan Triwulan; Hidayat Soegihardjo Masiran; Heppy Kristijanto; Data Iranata
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 31, Nomor 2 (2025)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v31i2.68632

Abstract

This study evaluates the seismic performance of steel moment-resisting frames through the integration of reduced beam sections (RBS) with externally reinforced cover plates. Three-dimensional finite element analyses under cyclic loading were conducted to assess the influence of cover plates on different RBS geometries, including radius cut (RBSCP-RC), straight cut (RBSCP-SC), tapered cut (RBSCP-TC), and drilled flange (RBSCP-DF). The objective of this study is to investigate the effects of geometric variation on seismic response, moment capacity, and ductility of hybrid RBS–cover plate (RBSCP) connections. The novelty of this research lies in the systematic development and evaluation of a hybrid RBS–cover plate connection that combines the energy dissipation capability of RBS with the strengthening function of cover plates. This configuration is intended to shift plastic hinge formation away from the column face, reduce the risk of premature weld failure, and improve connection strength and energy dissipation. The numerical results indicate that the incorporation of cover plates significantly enhances the seismic performance of RBS connections, with the radius-cut configuration demonstrating the most stable hysteretic behavior and the highest energy dissipation capacity. These findings emphasize the importance of geometric optimization in hybrid RBS–cover plate designs and provide valuable guidance for improving the seismic resilience of steel moment-resisting frames.
Co-Authors Andhika Daffa Ramadhan Budi Suswanto Chien-Kuo Chiu Dang Thanh Trung Data Iranata Heppy Kristijanto Hidayat Soegihardjo Masiran I Nengah Sinarta I Putu Ellsa Sarassantika I Putu Ellsa Sarassantika I Wayan Maesa Andreasnata Ni Komang Armaeni Roro Sulaksitaningrum Roro Sulaksitaningrum Sudarno P Tampubolon Triwulan Triwulan