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All Journal IPTEK The Journal of Engineering Journal of Civil Engineering Civil Engineering Journal Jurnal Aplikasi Teknik Sipil Sewagati Jurnal Teknik Sipil Advance Sustainable Science, Engineering and Technology (ASSET)
Yuyun Tajunnisa
Departemen Teknik Infrastruktur Sipil, Fakultas Vokasi, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Transportation Other

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Journal : Civil Engineering Journal

 1 
Retrofitting Bolted Flange Plate (BFP) Connections Using Haunches and Extended End-Plates Budi Suswanto; Fikri Ghifari; Yuyun Tajunnisa; Data Iranata
Civil Engineering Journal Vol 10, No 8 (2024): August
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-08-03

Abstract

In Indonesia, one of the most common forms of connection is the Bolted Flange Plate (BFP) moment connection. Nevertheless, their current setups do not satisfy the strict requirements outlined in AISC 358-22. Therefore, this study uses advanced sub-assemblage numerical modeling simulations using ANSYS software to propose a novel way to integrate a half WF extended end-plate connection and trapezoidal haunch in order to fortify BFP moment connections, which does not meet the requirement required by AISC 358-22. Methodologically, the research entails comprehensive modeling and analysis of the proposed retrofit scheme. Six distinct connection models were scrutinized: the BFP-UR representing the existing connection extracted from a structure in Surabaya; the BFP-R4E and BFP-R4ES models, embodying connection retrofits with a half WF extended end-plate; and the BFP-RTR and BFP-RSTR models, embodying connection retrofits with a trapezoidal haunch. Additionally, the BFP-RTRE model integrates both an extended end plate and a trapezoidal haunch in the retrofit scheme. The analytical findings unveil that the proposed strengthening paradigm manifests heightened and superior rotational moment characteristics relative to the pre-reinforcement configuration, albeit encountering stiffness degradation attributable to buckling effects on the main beam. Notably, the analysis indicates that degradation ensues when rotational displacement exceeds 4%, with only the BFP-RTR and BFP-RSTR models exhibiting degradation at a 3% rotation threshold. Crucially, the connections demonstrate the capability to withstand 80% of the beam’s plastic moment under a 4% rotational displacement, thereby aligning with the stringent requisites delineated in AISC 341-22. Doi: 10.28991/CEJ-2024-010-08-03 Full Text: PDF
Effect of Axial Load on the Seismic Performance of Steel Reinforced Concrete Beam-Column Joint Iranata, Data; Suswanto, Budi; Amalia, Aniendhita Rizki; Tajunnisa, Yuyun; Septiarsilia, Yanisfa
Civil Engineering Journal Vol. 11 No. 6 (2025): June
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-06-016

Abstract

Steel-reinforced concrete (SRC) provides numerous advantages, such as enhanced energy dissipation, ductility, stiffness, and strength, particularly in seismic performance. Several studies on the effect of axial loads on columns found that axial loads have an insignificant influence on column capacity, though they influence long-term performance. Beam-column joint elements are among the critical components that determine the seismic behavior of a structure. Inaccurate design of these joints can lead to fatal structural damage, potentially causing structural collapse. This study aimed to perform a numerical analysis of various joint configurations under cyclic and axial loads to identify models with the best seismic performance that consisted of four models using different SRC length parameters. The research used nonlinear finite element methods with the ABAQUS software, which enables detailed simulations of joint behavior, including predictions of failure mechanisms that are difficult to observe in experimental testing. The results of the analysis showed that the CS-02 model demonstrated the best seismic performance. Axial load increased the capacity in all models, improved energy dissipation in the RC model, slightly reduced dissipation in CS models, and caused different rotational behavior across models.
Shear Performance of ULCC and PCC: Experimental and Numerical Insights Using DIC and FEM Tajunnisa, Yuyun; Mansur, Moh Safii; Suprobo, Priyo; Apsari, Auliagitta K.; Sutrisno, Wahyuniarsih
Civil Engineering Journal Vol. 11 No. 8 (2025): August
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-08-011

Abstract

This study investigates the shear behavior of reinforced concrete beams constructed with high-calcium fly ash-based Ultra-Low Carbon Concrete (ULCC) as a sustainable alternative to conventional Portland Cement Concrete (PCC). The objective is to assess ULCC’s structural performance under shear and its potential as a low-carbon substitute. Using a dry-mix method with dry activators, six beams (five ULCC, one PCC) of identical dimensions (150 × 250 × 1800 mm) were tested under four-point bending, with variations in shear reinforcement, flexural reinforcement, and shear span-to-depth (a/d) ratios. Digital Image Correlation (DIC) was employed to monitor crack propagation and strain development, while Finite Element Modeling (FEM) provided numerical validation. Results show that increasing shear reinforcement enhanced capacity by 12.05%, whereas higher (a/d) ratios decreased it by 22.63%; increased flexural reinforcement improved shear resistance by 31.27%. FEM closely matched experimental outcomes, with a load-deflection ratio of 1.01. ULCC outperformed PCC in shear capacity and exceeded ACI 318-19 predictions. The integration of DIC and FEM offers a comprehensive analysis framework, and the findings demonstrate ULCC’s viability as a structurally efficient, environmentally sustainable alternative for shear-critical applications.
Co-Authors Affandhie, R. Buyung Anugrah Affandhie, R. Buyung Anugraha Affandhie, Raden Buyung Anugraha Ahmad Basshofi Habieb Ahmad Basshofi Habieb Alam, Rizki Robbi Rahman Alfayet, Muhamad Rifki Aniendhita Rizki Amalia Apsari, Auliagitta K. Apsari, Auliagitta Kumala Arrafid, Rifqi Nadhif Arwinda Aribah Cahyani Ashara, Khansa Fadilah Auliagitta Kumala Apsari Bambang Piscesa Basshofi Habieb, Ahmad Bayuaji, Ridho Beta Rahayuning Pratiwi Budi Suswanto Budi Suswanto Budi Suswanto Butje Alfonsius Louk Fanggi Cahyani, Arwinda Aribah Chadaffi, Muchamad Daffa Azmi, Ahmad Darmawan, Muhammad Sigit Data Iranata Data Iranata Dicky Imam Wahyudi Dicky Imam Wahyudi Dicky Imam Wahyudi Diputra, Aditya Tamateja Djoko Sulistiono Fadilah Ashara, Khansa Fikri Ghifari Fikri Ghifari Geralda Nurry Arifa Habibillah Asyari, Yudhistira Halisah, Vonny Nur Hariyanto, Ifarrel Rachmanda Hazen Masrafat Hendro Nurhadi Husin, Nur Achmad Ibnu Pudji Rahardjo Ibnu Pudji Rahardjo Ibnu Pudji Raharjo Indra Komara Indra Komara, Indra Jonatan Lassa Jonatan Lassa Jusuf Wilson Meynerd Rafael Jusuf Wilson Meynerd Rafael Khoiri, Mohamad Kuntjoro Kusbiantoro, Andri Louk Fanggi, Butje Alfonsius M. Faishal Darmawan Machsus Machsus Mansur, Moh Safii MANSUR, MOH. SAFI'I Mansur, Moh. Safi’i Masiran, Hidajat Sugihardjo Mawardi, Amalia Firdaus Meynerd Rafael, Jusuf Wilson Mitsuhiro Shigeishi Mochammad Ahdian Wildan Nafi Mohamad Khoiri Muhammad Hafiizh Imaaduddiin Muhammad Sigit Darmawan Muhammad Sigit Darmawan Muhammad Wildan Aziz Nur Achmad Husin Nur Achmad Husin Nur Achmad Husin Nurhadi, Hendro Paramitha, Kharisma Keysia Piscesa, Bambang Priyo Suprobo Priyo Suprobo Purnamasari, Ragil R. Buyung Anugraha Affandhie R. Buyung Anugraha Affandhie Raden Buyung Darmawan Rahardjo, Ibnu Pudji Ralindra, Deris Faisa Ramadhaniawan, Virdy Ridho Bayuaji Ridho Bayuaji Rijiyawanto, Adetya Shigeishi, Mitsuhiro Sigit Darmawan Sigit Darmawan Sita Auliyah Rahmasari Siti Kamilia Aziz Srie Subekti Subekti, Srie Sulchan Arifin Sulchan Arifin Sungkono Karsidi Sungkono Karsidi Sungkono Sungkono Sungkono Sungkono Suprobo, Priyo Suswanto, Budi Sutrisno, Wahyuniarsih Sutrisno, Wahyuniarsih Suwandi Suwandi Suwandi Suwandi Suwandi Syifaul Ummah, Galih Tatas, Tatas Tatas, Tatas Wibowo, Yosi Noviari Wibowo, Yosi Noviari Wilujeng, Susi A Yanisfa Septiarsilia Yosi Noviari Wibowo Yudoprasetyo, Kohar Zanah, Miftaqul