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EVALUASI STRUKTUR EKSISTING GEDUNG GRAHA PT PETROKIMIA GRESIK Muhammad Wahyu Firdani; Muhammad Sigit Darmawan; Budi Suswanto; Gentur Prihantono
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 01 (2026): Volume 12 No. 01, Maret 2026 Published
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.10974

Abstract

This paper discusses the Evaluation of the Existing Structure of the Graha Building of PT Petrokimia Gresik. The building was constructed on December 6, 2021, and handed over on June 28, 2023. However, in August 2025, cracks were discovered in the rear section of the building. These cracks were found in areas such as the staircase access from the 1st to the 2nd floor, the head office's room, and on beams across several floors. Consequently, a special identification of this damage is required, encompassing visual inspection, concrete surface hardness testing, concrete core sampling, and analysis using SAP2000. Therefore, a technical study is necessary to analyze the structural strength of the existing building. Based on the structural system analysis, the selected strengthening methods are: Adding new post columns using IWF 250 x 250 sections, Injecting the concrete cracks, Strengthening the cantilever beams using Carbon Fiber Reinforced Polymer (CFRP). Furthermore, risk mitigation for these work methods is required to ensure the project implementation can be completed safely.
Investigation of Slit Link Behavior with Wide-Flange (WF) Sections in Eccentrically Braced Frames (EBFs) Wilson Meynerd Rafael, Jusuf; Suswanto, Budi; Chiu, Chien-Kuo; Iranata, Data; R. Amalia, Aniendhita; Ghifari, Fikri
Civil Engineering Journal Vol. 12 No. 3 (2026): March
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2026-012-03-08

Abstract

This study investigates the seismic performance of slit link configurations using wide-flange (WF) sections within eccentrically braced frames (EBFs), addressing the limited application of slit geometries in practical steel construction. The objective is to evaluate the influence of slit shape and width on shear strength, ductility, and energy dissipation, while ensuring damage localization within the link element. Six analytical models were developed, including conventional links (CV and CV-ST) and slit variants (SL-1 to SL-4), and analyzed through nonlinear finite element simulations in ABAQUS under the AISC 341-22 cyclic loading protocol. The analysis focused on stress distribution, hysteretic response, backbone curve stability, and energy dissipation. Results show that conventional links provide higher peak shear strength and energy absorption but transmit stresses into adjacent members, increasing repair complexity. In contrast, slit links confine plastic deformation within the link region, enhancing ductility and repairability at the expense of reduced strength. Among the slit variants, the parabolic slit (SL-4) demonstrated smoother stress redistribution and improved cyclic stability compared to rectangular slits. The novelty of this research lies in embedding slit geometries directly into WF profiles, offering a cost-effective fuse mechanism that bridges theoretical slit damper concepts with real-world EBF applications.
STUDI NUMERIK PERILAKU SAMBUNGAN HAUNCHED BOLTED EXTENDED END PLATE AKIBAT BEBAN SIKLIK BERDASARKAN VARIASI SUDUT Ananda Fersanti, Syarifah Nur’ain; Suswanto, Budi
TAPAK [Teknologi Aplikasi Konstruksi] : Jurnal Program Studi Teknik Sipil Vol 15, No 2 (2026): Mei 2026
Publisher : Prodi Teknik Sipil Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/tp.v15i2.5183

Abstract

Sambungan merupakan komponen penting dalam struktur baja, memainkan peran signifikan dalam menentukan kinerja struktural secara keseluruhan, terutama di bawah beban siklik akibat efek seismik. Studi ini bertujuan untuk menganalisis pengaruh variasi sudut haunch pada perilaku sambungan pelat ujung yang diperpanjang dengan baut dan haunch di bawah beban siklik menggunakan metode elemen hingga. Analisis dilakukan dengan memodelkan tiga variasi sudut haunch, yaitu 25°, 35°, dan 45°, menggunakan perangkat lunak ABAQUS. Pemodelan mencakup elemen padat tiga dimensi, perilaku material elastis-plastik, dan interaksi kontak dengan kendala pengikat di dalam sambungan. Hasil validasi terhadap data eksperimental menunjukkan bahwa model numerik menunjukkan kesesuaian yang baik dalam merepresentasikan respons struktural. Hasil menunjukkan bahwa semua spesimen menunjukkan perilaku nonlinier yang stabil dengan respons histeresis yang relatif simetris dan tidak ada degradasi kekuatan yang signifikan. Variasi sudut haunch secara signifikan memengaruhi kapasitas, kekakuan, dan daktilitas sambungan. Spesimen dengan sudut penopang 35° menunjukkan kinerja paling optimal, mencapai kapasitas beban maksimum 758,48 kN, momen maksimum 586,24 kN·m, dan kekakuan awal tertinggi 184,26 kN/mm, serta kapasitas deformasi yang baik yang ditunjukkan oleh rotasi maksimum 0,0051 rad. Spesimen dengan sudut penopang 45° menunjukkan kekakuan awal yang relatif tinggi sebesar 178,34 kN/mm; namun, memiliki kapasitas yang lebih rendah dan kemampuan deformasi yang lebih terbatas. Sementara itu, spesimen dengan sudut penopang 25° menunjukkan kekakuan dan kapasitas terendah, meskipun menunjukkan kecenderungan yang lebih besar untuk deformasi plastis. Distribusi tegangan maksimum terkonsentrasi di daerah penopang, pelat ujung, dan di sekitar lubang baut, menunjukkan peran dominan komponen-komponen ini dalam mekanisme transfer gaya. Secara keseluruhan, sudut penopang 35° memberikan keseimbangan terbaik antara kekuatan, kekakuan, dan daktilitas, dan mampu mempertahankan kinerja struktural optimal di bawah beban siklik
Analisis Risiko Keselamatan dan Kesehatan Kerja pada Pembangunan Villa Karang dengan Metode Job Safety Analysis Ni Wayan Medita Santipa Tori; Budi Suswanto; Ngakan Ketut Acwin Dwijendra
Jurnal Teknik Sipil Vol 6, No 1 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jts.2025.v6i1.7751

Abstract

Proyek pembangunan Villa Karang yang berlokasi di Ubud, Bali yang terdiri atas 14 tahapan pada pekerjaan bangunan villa, mulai dari pekerjaan persiapan hingga pekerjaan finishing. Selain itu, pekerjaan kolam renang memiliki 6 tahapan tersendiri. Tujuan penelitian ini adalah mengidentifikasi potensi bahaya dan pengendalian pada pekerjaan pembangunan Villa Karang. Metode yang digunakan untuk mengidentifikasi potensi bahaya yaitu menggunakan metode Job Safety Analysis (JSA). Total potensi bahaya pada pekerjaan pembangunan villa karang yaitu sebanyak 169 potensi bahaya, dengan 117 potensi pada bangunan villa (8 risiko rendah, 82 risiko sedang, 26 risiko tinggi dan 1 risiko ekstrim), serta 52 potensi pada kolam renang (4 risiko rendah, 29 risiko sedang dan 19 risiko tinggi). Upaya pencegahan dan pengendalian potensi bahaya mencakup memastikan penggunaan alat kerja yang sesuai prosedur, pada beberapa pekerjaan tertentu membutuhkan pekerja dengan skill khusus, serta meningkatkan komunikasi antara perusahaan dan pekerja. Selain itu penggunaan Alat Pelindung Diri (APD) yang lengkap menjadi faktor penting dalam mencegah kecelakaan kerja, namun dalam proyek tersebut masih dapat kekurangan dalam penyediaannya. Sehingga dilakukan perhitungan estimasi biaya APD, hasil yang didapatkan yaitu sebesar Rp 19.778.033. Hasil perhitungan ini membantu perusahaan merencanakan anggaran dengan memasukkan biaya APD ke dalam RAB secara optimal. Tujuan dari laporan ini yaitu untuk menerapkan JSA sesuai dengan peraturan yang ada sehingga dapat dilakukan identifikasi potensi bahaya dan menentukkan pengendalian serta pencegahan pada pekerjaan pembangunan Villa Karang. 
Development and Analysis of an Innovative Precast Concrete U-Shell Beam Budi Suswanto; Data Iranata; I Gusti Putu Raka; Yanisfa Septiarsilia
IPTEK The Journal of Engineering Vol. 10 No. 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v10i1.a20049

Abstract

Precast concrete offers several advantages compared to conventional systems; precast concrete structure technology has become a strategy to enhance standardization, quality control, labor efficiency, and reduce environmental impact and construction pollution. The U-Shell precast beam is a reinforced concrete beam with a 'U' shape designed to enhance practicality and expedite the construction process as it does not require additional formwork and shoring during implementation. The U-Shell beam functions as a permanent formwork, and its design follows either monolithic or conventional methods. In multi-story buildings, using U-Shell beam can increase practical value, reduce costs, and improve time efficiency because they do not require additional formwork and scaffolding in the implementation application. This research involves the development of U-Shell precast beams, structure loading considering various loads, modeling using computer program to determine the structural reactions on each element, reinforcement design for the U-Shell beam structure, and analysis of the lifting and assembly of U-Shell precast beam. The building selected for reviewing U-Shell beams is the Building with a Special Moment Resisting Frame System. From the results of the analysis, the researcher drew several conclusions regarding the reinforcement design for the U-Shell beam under both conditions. In the condition before composite, the number of installed main reinforcements is 6 with a diameter of 13 mm, while in the condition after composite, the number increases to 8 with a diameter of 16 mm. Lifting reinforcement requires a diameter of 10 mm. The difference in reinforcement between before composite and after composite conditions is because before the composite the beam is still receiving self-load, whereas for the after composite condition the change in moment occurs. After all, the beam has received self-load and other loads. The development and analysis of an innovative precast concrete U-Sheel beam has complied with strength and serviceability.
STUDI NUMERIK PERILAKU SAMBUNGAN HAUNCHED BOLTED EXTENDED END PLATE AKIBAT BEBAN SIKLIK BERDASARKAN VARIASI SUDUT Syarifah Nur’ain Ananda Fersanti; Budi Suswanto
TAPAK [Teknologi Aplikasi Konstruksi] : Jurnal Program Studi Teknik Sipil Vol 15 No 2 (2026): Mei 2026
Publisher : Prodi Teknik Sipil Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/tp.v15i2.5183

Abstract

Sambungan merupakan komponen penting dalam struktur baja, memainkan peran signifikan dalam menentukan kinerja struktural secara keseluruhan, terutama di bawah beban siklik akibat efek seismik. Studi ini bertujuan untuk menganalisis pengaruh variasi sudut haunch pada perilaku sambungan pelat ujung yang diperpanjang dengan baut dan haunch di bawah beban siklik menggunakan metode elemen hingga. Analisis dilakukan dengan memodelkan tiga variasi sudut haunch, yaitu 25°, 35°, dan 45°, menggunakan perangkat lunak ABAQUS. Pemodelan mencakup elemen padat tiga dimensi, perilaku material elastis-plastik, dan interaksi kontak dengan kendala pengikat di dalam sambungan. Hasil validasi terhadap data eksperimental menunjukkan bahwa model numerik menunjukkan kesesuaian yang baik dalam merepresentasikan respons struktural. Hasil menunjukkan bahwa semua spesimen menunjukkan perilaku nonlinier yang stabil dengan respons histeresis yang relatif simetris dan tidak ada degradasi kekuatan yang signifikan. Variasi sudut haunch secara signifikan memengaruhi kapasitas, kekakuan, dan daktilitas sambungan. Spesimen dengan sudut penopang 35° menunjukkan kinerja paling optimal, mencapai kapasitas beban maksimum 758,48 kN, momen maksimum 586,24 kN·m, dan kekakuan awal tertinggi 184,26 kN/mm, serta kapasitas deformasi yang baik yang ditunjukkan oleh rotasi maksimum 0,0051 rad. Spesimen dengan sudut penopang 45° menunjukkan kekakuan awal yang relatif tinggi sebesar 178,34 kN/mm; namun, memiliki kapasitas yang lebih rendah dan kemampuan deformasi yang lebih terbatas. Sementara itu, spesimen dengan sudut penopang 25° menunjukkan kekakuan dan kapasitas terendah, meskipun menunjukkan kecenderungan yang lebih besar untuk deformasi plastis. Distribusi tegangan maksimum terkonsentrasi di daerah penopang, pelat ujung, dan di sekitar lubang baut, menunjukkan peran dominan komponen-komponen ini dalam mekanisme transfer gaya. Secara keseluruhan, sudut penopang 35° memberikan keseimbangan terbaik antara kekuatan, kekakuan, dan daktilitas, dan mampu mempertahankan kinerja struktural optimal di bawah beban siklik
Performance Analysis of Corrugated Steel Plate Shear Wall with Geometry Variations Annasia Faza Nadiva; Budi Suswanto; Aniendhita Rizki Amalia
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 10, No 2 (2025): EDISI SEPTEMBER 2025
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v10i2.8147

Abstract

The use of stiffening elements in steel plate shear wall (SPSW) systems enhances lateral stiffness and energy dissipation capacity; however, it also significantly increases material and labor costs due to the complexity of fabrication and installation. As an alternative, the Corrugated Steel Plate Shear Wall (CoSPSW) system has been proposed as a more efficient and practical solution that maintains sufficient stiffness and strength without requiring additional stiffeners. This study investigates the structural performance of CoSPSWs with varying corrugation geometries using the finite element method. The analysis focuses on the influence of the corrugation angle on the overall structural behavior, including buckling stability, lateral stiffness, ultimate strength, and energy dissipation capacity. Nonlinear finite element simulations were conducted using ABAQUS software to capture the influence of geometric nonlinearities under lateral cyclic loading. The results show that increasing the corrugation angle significantly improves lateral stiffness and energy dissipation capacity, while maintaining stable post-buckling behavior. An optimal corrugation angle of approximately 60° provides the maximum strength and ductility among the specimens. This study contributes to understanding the behavior of corrugated steel shear walls and provides valuable insights for the design of efficient, cost-effective steel structures.
KINERJA SAMBUNGAN BOLTED STIFFENED EXTENDED END-PLATE (BSEEP) MENGGUNAKAN T-STIFFENER Bryant Rizwantuana; Aniendhita Rizki Amalia; Budi Suswanto
Construction and Material Journal Vol. 8 No. 1 (2026): Construction and Material Journal Vol. 8 No. 1 Mei 2026
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v8i1.8340

Abstract

One of the crucial aspects in the design of earthquake-resistant buildings, especially those using steel structural systems, is the design of beam-to-column connections in the steel structure. Following the Northridge earthquake, regulations and standards for earthquake-resistant building design have been continuously developed and updated until now. This research will combine the Bolted Stiffened Extended End-Plate (BSEEP) connection from previous experimental studies with a T-Stiffener as a replacement for its stiffener plate. The T-Stiffener is made in several variations to investigate its effect when applied to a connection. This research uses ANSYS Workbench software. The connection modification modeling is planned with 6 modification models. Model-1 is the initial connection that is equated with previous experimental research. Model-2 uses the same type of stiffener as Model-1 but with the addition of a continuity plate. Model-3 and Model-4 are modification models using a T-Stiffener with a vertical height of 140 mm and lengths of 120 mm and 300 mm, which are welded to the beam flange and column flange. Model-5 and Model-6 are variations of Model-3 and Model-4 with a height of 180 mm and lengths of 120 mm and 300 mm. Model-6 produced the highest moment capacity at 4% rotation, which is 376.36 kN-m, or an increase of 27.91% from Model-1. In terms of energy dissipation, Model-6 also had the largest energy dissipation, which is 2,763.39 kN-m-rad, or an increase of 18.45% from Model-1. All analyzed connection models show relatively similar stress contours and buckling in the panel zone. This can occur because the column and beam profile sizes are relatively similar. With these relatively similar profile sizes, the connection cannot achieve a strong-column weak-beam system even though modifications have been made to strengthen the connection.
Analisis Karakteristik Material Baja dengan Metode Digital Image Correlation (DIC) Budi Suswanto; Data Iranata; Yanisfa Septiarsilia
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.59491

Abstract

Penggunaan material baja dalam konstruksi bangunan menjadikan peluang baru menuju pembangunan berkelanjutan, karena material baja memiliki sifat tahan lama dan handal dalam kekuatan dan daktilitas. Digital Image Correlation (DIC) merupakan teknik non-kontak dimana gambar digital permukaan benda uji ditangkap menggunakan kamera resolusi tinggi. Dalam penelitian, dilakukan pengukuran distribusi regangan di permukaan spesimen dengan menggunakan metode-DIC selama seluruh proses pengujian tarik material dan terutama meneliti perubahan distribusi regangan selama fase meleleh serta tahap deformasi lokal hingga gagal. Kemudian, dilakukan perbandingan kurva load-displacement hasil pengujian eksperimental laboratorium dengan hasil analisis menggunakan metode metode-DIC terhadap material baja dengan mutu SS400. Berdasarkan hasil penelitian dari uji tarik dan analisis DIC yang telah dilakukan, maka diperoleh kesimpulan dalam penelitian. Hasil pengujian tarik material baja dengan mutu SS400 ketebalan 6 mm, 8 mm, 10 mm, dan 12 mm memenuhi persyaratan mutu pada standar spesifikasi yang diuji, serta hasil kurva force-displacement antara hasil pengujian eksperimental dan metode-DIC didapatkan penyimpangan minimum dengan nilai dibawah 10%, hal ini dapat disimpulkan bahwa metode-DIC memiliki tingkat keakurasian yang cukup baik, sehingga dapat digunakan untuk memvalidasi hasil pengujian eksperimental.
An Experimental Study on Axial Stress-Strain Behaviour of FRP-Confined Square Lightweight Aggregate Concrete Columns Butje Alfonsius Louk Fanggi; Budi Suswanto; Yuyun Tajunnisa; Jusuf Wilson Meynerd Rafael; Jonatan Lassa; Ahmad Basshofi Habieb
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.865

Abstract

This article presents the results of a research project that aimed to evaluate how the number of fiber-reinforced polymer (FRP) layers and the compressive strength of concrete affect the stress-strain behaviors of concrete columns produced from artificial lightweight aggregate with square cross-sectional shapes. Eighteen test specimens were manufactured and wrapped with glass fiber-reinforced polymer (GFRP) material. The specimens were later subjected to concentric compression for experimental evaluation. The experimental results suggest that GFRP efficiently confines square lightweight aggregate concrete columns. Furthermore, the test results indicate that adding FRP layers augments the ultimate stress and strain. Finally, the results suggest that an increase in the compressive strength of concrete leads to a corresponding increase in the ultimate stress. On the other hand, it has been observed that the ultimate strain decreases as compressive strength increases. The research findings reveal the behaviour of FRP-confined square lightweight aggregate concrete columns, which may also be utilized to formulate a new design-oriented model for these columns.
Co-Authors Ade Asmi Agustina D. Atmaji Agustina Dwi Atmaji Al Anshori, Moh. Irfan Al Rasyid, Harun Ananda Fersanti, Syarifah Nur’ain Aniendhita R. Amalia Aniendhita Rizki Amalia Aniendhita Rizki Amalia Annasia Faza Nadiva Apriansyah Apriansyah Ardiansyah, Giri Teguh Arif Rijal Arina Desye Hariyanti Arrahmatur Rizqi Aulia Indira Kumalasari Axel Ricardo Santoso Bambang Piscesa Basshofi Habieb Bryant Rizwantuana Butje Alfonsius Louk Fanggi Cahyono, Achmad Rudy Chiu, Chien-Kuo Cintantya Budi Casita Darmawan, Kevin Candra Darmawan, Muhammad Sigit Data Iranata Dinar, Bala Arizalu Putra Diputra, Aditya Tamateja Dita Kamarul Fitriyah Dita Kamarul Fitriyah Dzul Fikri Muhammad Endah Wahyuni Endah Wahyuni Endah Wahyuni Fikri Ghifari Fikri Ghifari Fikri Ghifari Gentur Prihantono Gentur Prihartono Ghifari, Fikri Habibillah Asyari, Yudhistira Habieb, Ahmad Basshofi Harun Al-Harun Haykal Wildan Tamimi El Jauhari Heppy Kristijanto Hernadi, Ahmad Hidajat Sugihardjo Hidajat Sugihardjo Hidajat Sugihardjo Hidajat Sugihardjo Hidajat Sugihardjo Hidayat Soegihardjo Husin, Nur Ahmad I Gusti Putu Raka Ida Ayu Putu Eka Chandra Saraswati Ifarrel Rachmanda Hariyanto Indarto, Richo Oktavian Indra Komara, Indra Irawan, Djoko Jonatan Lassa Jusuf Wilson Meynerd Rafael Jusuf Wilson Meynerd Rafael Kevin C. Darmawan Khala, Christianto Credidi Septino Kumalasari, Aulia Indira Louk Fanggi, Butje Alfonsius M. Sigit Darmawan Masahide Matsumura Masiran, Hidajat Sugihardjo Merisa Ayu Pramesti Meynerd Rafael, Jusuf Wilson Moh F. Rosyidi Moh. Fadhlan Rosyidi Moneta, Rendy - Muhammad Sigit Darmawan Muhammad Syamsu Bachri Muhammad Wahyu Firdani Muhammad Zulfikar Fauzi Murti, Gandhi Wisnu Hari Ngakan Ketut Acwin Dwijendra Ni Wayan Medita Santipa Tori Njoko, Fillbert Nufrizal Faried Hanafi Nur Ahmad Husin Nuur Aziza Setiyowati Pangestuti, Pramesta Armanisag Prihantono, Gentur Priyo Suprobo R. Amalia, Aniendhita R. Soewardojo Rahmanita Nuzula Raka, I Gusti Putu Rambak, Ezra Pasereng Ridho Bayu Aji Ridho Bayuaji Rijiyawanto, Adetya Rosyidi, Moh Fadhlan RPX Rooswan Happmono Santoso, Wilman Adi Septiarsilia, Yanisfa Silalahi, Oktavia Ully Artha Sugihardjo, Hidajat Sugihardjo, Hidajat Susanto Hari Asmoro Syamsu, Rizal Nur Syarifah Nur’ain Ananda Fersanti Syifaul Ummah, Galih Tatas Tatas Titan Adya Safara Tri Widya Swastika Triwulan Triwulan Triwulan Triwulan Wilson Meynerd Rafael, Jusuf Yafie Abdillah Akbar Yanisfa Septiarsilia Yanisfa Septiarsilia Yanisfa Septiarsilia Yudhi Arnandha Yuyun Tajunnisa