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All Journal Jurnal Teknik Sipil REKA RACANA Jurnal Teknik Sipil dan Perencanaan Journal of Engineering and Technological Sciences Jurnal Teknik Sipil Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil
Riawan Gunadi
Jurusan Teknik Sipil, Politeknik Negeri Bandung, Jl. Gegerkalong Hilir Ciwaruga, Bandung Barat.
Civil Engineering, Building, Construction & Architecture Education Engineering Transportation

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Review of Structural Performance and Repair Strategies for Fire-Damaged Reinforced Concrete Beams Noor, Deliar; Gunadi, Riawan
Jurnal Teknik Sipil Vol 25, No 3 (2025): Vol 25, No 3 (2025): JURNAL TEKNIK SIPIL EDISI AGUSTUS 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i3.92680

Abstract

Reinforced concrete structures are susceptible to degradation in strength and stiffness when exposed to high temperatures during fire events. This degradation, which progresses linearly with increasing temperature and duration, can significantly compromise the structural integrity of buildings. The present study aims to evaluate the effectiveness of several post-fire repair techniques in restoring the mechanical performance of fire-damaged reinforced concrete beams. This research employs a systematic literature review approach, analysing experimental data from previous studies conducted by Hassan et al. (2018), Al-Nsour et al. (2023), and Kodur and Agrawal (2016). The primary materials and methods examined include Carbon Fibre Reinforced Polymer (CFRP), steel plates, and Basalt Fibre Reinforced Polymer Bars (BFRP-Bars), applied through various rehabilitation techniques such as Near Surface Mounted (NSM) and Reinforced Concrete Jacketing (RCJ). The evaluated data cover technical parameters such as specimen dimensions, thermal exposure scenarios (400 °C and 600 °C), exposure duration, and resulting changes in structural behaviour, including maximum load capacity, deflection, and residual deformation. The findings indicate that exposure to 600 °C for 120 minutes leads to strength degradation exceeding 60%. Post-fire rehabilitation using CFRP combined with steel plates restored the load capacity by up to 174,2% compared to the control specimen, while NSM application with BFRP bars increased capacity by 120,51%. Although deflection was relatively unaffected by thermal variations, both methods demonstrated high efficiency in restoring flexural performance. The study confirms that fibre-reinforced composite materials, when applied with proper techniques, are viable solutions for enhancing post-fire structural resilience.
Literature Review: The Influence of Truss Configuration and Height on Steel Truss Bridges Based on Deflection and Structural Weight Sari, Wulan; Delitriana, Arvila; Gunadi, Riawan
Jurnal Teknik Sipil Vol 25, No 2 (2025): Vol 25, No 2 (2025): JURNAL TEKNIK SIPIL EDISI MEI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i2.91399

Abstract

In the design of steel truss bridges, selecting the appropriate truss configuration and height is a critical step that significantly impacts the overall structural performance. Steel truss bridges feature various configurations with distinct structural characteristics related to span length, structural weight, and deflection. Deflection serves as a key parameter to assess structural stiffness, while structural weight greatly influences the economic feasibility of the bridge design. Achieving weight efficiency without compromising structural performance can effectively reduce construction costs, resulting in a strong and economical bridge. Based on a review of multiple studies, it is evident that both truss configuration and height strongly affect deflection and total structural weight. Among Indonesia's four common truss types"”Warren, Pratt, Howe, and K-Truss"”the Howe configuration exhibits the least deflection, indicating superior stiffness. Additionally, increased truss height inversely correlates with axial forces and deflection; higher trusses experience lower axial forces in the members and reduced deflections. Furthermore, the choice and dimensioning of truss member profiles substantially influence the resulting structural weight. Therefore, an integrated approach to optimising truss configuration, height, and member sizing is essential for developing steel truss bridges that balance structural efficiency, strength, and cost-effectiveness.
Evaluasi Kelayakan Struktur Gedung SDN Cipageran Mandiri 1 Kota Cimahi Jawa Barat Muchtar, Muchtar; Gunadi, Riawan; Puspitasari, Ira; Nurdin, Muhamad Irfan; Zakiyyah, Amirah; Muflih, Moch. Imam
RekaRacana: Jurnal Teknik Sipil Vol 12, No 1: Maret 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaracana.v12i1.44

Abstract

ABSTRAKSDN Cipageran Mandiri 1 Kota Cimahi memiliki gedung bertingkat yang menimbulkan kekhawatiran terkait keselamatan dan kenyamanan pengguna akibat kerusakan struktural maupun arsitektural. Penelitian ini bertujuan mengevaluasi kelayakan struktur gedung C melalui inspeksi visual, pengujian non-destruktif (NDT), serta analisis struktur menggunakan perangkat lunak berbasis metode elemen hingga. Metode penelitian dilakukan secara kuantitatif melalui tahapan studi literatur, pengumpulan data sekunder, pemeriksaan visual, pengujian NDT (Rebound Hammer Test, Ultrasonic Pulse Velocity, Brinell Hardness Test, Liquid Penetrant Test, dan uji vertikalitas), hingga pemodelan struktur 3D. Hasil pengujian menunjukkan variasi mutu beton yang signifikan (29,1–407,4 kg/cm²) serta mutu baja yang tidak seragam (693,3–1432,6 MPa). Selain itu, ditemukan cacat pada sambungan las, korosi pada elemen baja, serta penyimpangan vertikal pada beberapa kolom. Analisis permodelan memperlihatkan stress ratio >1 pada sejumlah elemen balok dan kolom serta deformasi yang melebihi batas standar L/240, sehingga struktur dinyatakan tidak memenuhi persyaratan SNI 1729:2020. Kesimpulan dari penelitian ini adalah bahwa gedung C SDN Cipageran Mandiri 1 memerlukan perbaikan struktural secara menyeluruh untuk menjamin keselamatan, kenyamanan, serta keberlangsungan fungsi bangunan sebagai sarana pendidikan.Kata kunci: evaluasi struktur, gedung sekolah, kelayakan bangunan, keselamatan konstruksi, NDT ABSTRACTSDN Cipageran Mandiri 1 in Cimahi City has a multi-story building that raises concerns regarding the safety and comfort of its users due to both structural and architectural damage. This study aims to evaluate the feasibility of Building C through visual inspection, non-destructive testing (NDT), and structural analysis using finite element software. The research was conducted quantitatively through several stages, including literature review, secondary data collection, visual inspection, NDT (Rebound Hammer Test, Ultrasonic Pulse Velocity, Brinell Hardness Test, Liquid Penetrant Test, and verticality test), and 3D structural modeling. The results indicate significant variations in concrete strength (29.1–407.4 kg/cm²) and non-uniform steel quality (693.3–1432.6 MPa). In addition, defects were found in the welding joints, corrosion in steel elements, and deviations in verticality in several columns. Structural modeling analysis revealed stress ratios greater than 1 in several beam and column elements, as well as deformations exceeding the L/240 limit, indicating that the structure does not comply with the requirements of SNI 1729:2020. This study concludes that Building C of SDN Cipageran Mandiri 1 requires comprehensive structural rehabilitation to ensure safety, comfort, and the continued functionality of the facility as an educational facility.Keywords: structural evaluation, school building, building feasibility, construction safety, NDT
Co-Authors Ananta Sofwan Ananta Sofwan Ananta Sofwan Ariyansyah, Rona Bambang Budiono Bambang Budiono Bambang Budiono Bambang Budiono Delitriana, Arvila Innino Nino Justitiannisa Ira Puspitasari Iswandi Imran Muchtar muchtar Muflih, Moch. Imam Nadila, Sifa Ulhaq Noor, Deliar Nurdin, Muhamad Irfan Sabila, Fatihah Salma Wulan Sari, Wulan Wusqo, Urwatul Zakiyyah, Amirah