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All Journal MODUL MEDIA KOMUNIKASI TEKNIK SIPIL MATEMATIKA Journal of International Relations Studies Jurnal Teknik Sipil dan Perencanaan IMAJI Tesa Arsitektur Semesta Teknika Dinamika Teknik Sipil Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Astonjadro Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan Media Manajemen Pendidikan Jurnal Kridatama Sains dan Teknologi RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Management - Small and Medium Enterprises (SME's) Journal of the Civil Engineering Forum Jurnal Penelitian Chanos Chanos Jurnal Pengabdian Masyarakat dan Riset Pendidikan Jurnal Ilmiah Ekotrans & Erudisi (JIEE) RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi

Bambang Supriyadi

Dosen Magister Teknik Arsitektur, Fakultas Teknik, Universitas Diponegoro

Author-ID : 394003

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Aeroelastic Response of a Cable-Stayed Bridge Deck with Various Fairing Shape Models (Case Study of Suramadu Bridge) H, I Gede Agung Shri Parta; Supriyadi, Bambang; Triwiyono, Andreas
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18400

Aerodynamic phenomena poses risks for long-span cable-stayed bridge structures, nevertheless, the prevention method is often neglected on older bridges. The effort to reduce the risk and increase the aerodynamic performance of cable-stayed bridges mostly focuses on design and construction stages. This study attempts to improve aerodynamic performance by mitigating the aeroelastic heaving response of an existing bridge structure chosen as the subject, Suramadu Bridge. The approach is made by exploring different options applicable to already built bridges, such as the addition of fairings with varying shapes to modify the shape model of the bridge deck while maintaining the value of vertical and torsional stiffness. The study finds that there is relatively no increase in the lowest margin of critical vortex velocity of the bridge deck with fairing addition compared to the original bridge deck. The amplitude of oscillation caused by aerodynamic lift force is also fairly low since critical vortex velocity occurs in the range of 9.35-9.38 m/s. Upon increasing wind velocity up to the design wind speed of 37.8 m/s, there are significant differences in lift force and amplitude of oscillations. The shape model with the steepest fairing shows a significant decrease in amplitude, up to 35.6% lower than the original bridge deck, indicating a better aerodynamic stability. Meanwhile, the other two shape models show identical and higher amplitude compared to the original bridge deck.

PERANAN PEMBAYANGAN PADA COURTYARD TERHADAP PENGENDALIAN SUHU PERMUKAAN (Studi Kasus Gedung Widya Puraya Universitas Diponegoro Semarang) Jantu, Mochamad Athar; Hardiman, Gagoek; Supriyadi, Bambang; Setyowati, Erni
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 4 No. 2 (2016): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

ABSTRAK Courtyard merupakan komponen bangunan sejak lampau yang memiliki fungsi sebagai elemen estetika di dalam bangunan juga berperan dalam usaha menciptakan sistem pengkondisian udara dan pencahayaan alami. Sebagai bukaan tentunya penetrasi radiasi matahari langsung ke dalam bangunan tidak dapat di hindari akan tetapi dengan bentuk struktur yang khas dari courtyard ditambah dengan ketersediaan elemen vegetasi akan membentuk bidang-bidang bayangan. Tulisan ini bertujuan untuk memberikan pemaparan hasil penelitian mengenai sejauh mana peranan pembayangan pada courtyard dalam mereduksi peningkatan suhu permukaan akibat dari penetrasi radiasi matahari. Metode yang digunakan pada penilitan ini adalah analisis secara kualitatif terhadap data kuantitatif hasil observasi dan pengukuran langsung terhadap obyek studi. Dari hasil analisis dapat diketahui bahwa variasi bidang pembayangan dan durasi pembayangan pada area courtyard gedung Widya Puraya Universitas Diponego dapat mengendalikan peningkatan suhu permukaan yang dipengaruhi oleh durasi puncak peningkatan suhu permukaan. Kata Kunci : Pembayangan, Courtyard, Suhu Permukaan

Pengaruh Efektifitas Kelas Industri, Profesional Guru dan Minat Kerja terhadap Kesiapan Kerja Siswa SMK Kabupaten Kebumen Supriyadi, Bambang; Purbonuswanto, Welius
Media Manajemen Pendidikan Vol 6 No 3 (2024): Februari 2024
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/mmp.v6i3.9958

This study aims to determine the effect of Industrial Class Effectiveness, Teacher Professionalism and Work Interests together on Work Readiness of State Vocational School Students in Kebumen Regency, and to determine the effect of Industrial Class Effectiveness, Teacher Professionals and Work Interests individually on Work Readiness. Students of State Vocational Schools in Kebumen Regency. This research was conducted at SMK Negeri 1 Kebumen, SMK Negeri 1 Karanganyar, and SMK Negeri 1 Ambal. The research period was November 2020 to January 2021. This research used a correlational quantitative approach with a population of 108 students. The sample was determined as many as 85 students who were taken using the cluster random sampling method. The data analysis included descriptive analysis, data analysis prerequisite test analysis and hypothesis testing. The results of this study indicate that the work readiness variable is influenced by the industrial class effectiveness variable by 30.7%, the professional teacher variable by 16% and the work interest variable by 35.8% and of the three variables together is 82.5% so that there are 17.5% other factors that can affect job readiness but not examined in this study. Therefore, it is hoped that in further research, other factors can be found that can affect student work readiness.

PENINGKATAN DAYA JUAL PRODUK KELAUTAN DAN PERIKANAN UNGGULAN MELALUI PACKAGING, LABELLING, DAN DIGITAL MARKETING DI DESA BULUMEDURO, KECAMATAN BANCAR, KABUPATEN TUBAN Nugraha, Jefri Putri; Suseno, Dewi Alima Nostalia; Surahmat, Djoko; Rahardjo, Sugeng; Prayoto, Prayoto; Wartini, Sri; Supriyadi, Bambang; Waluyo, Buyung Purnomo; Sasongko, Dimas Bayu
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 4 (2024): Volume 5 No. 4 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i4.31308

Potensi perikanan yang ada di Indonesia merupakan salah satu sektor yang dimanfaatkan untuk menopang perekonomian sebagian masyarakat. Desa Bulumeduro merupakan salah satu desa yang berada di Kecamatan Bancar yang memanfaatkan potensi laut baik dalam penangkapan dan perdagangan. Produk kelautan dan perikanan yang ditawarkan, penting bagi para pelaku usaha di bidang ini untuk memperhatikan aspek packaging, labelling, dan digital marketing guna membedakan produk mereka dari pesaing, meningkatkan daya tarik produk, dan memenangkan persaingan pasar. Sehingga, kegiatan pelatihan ini dilaksanakan untuk mendukung inovasi kreativitas dalam pengembangan produk yang dapat meningkatkan daya jual dari produk kelautan dan perikanan maasyarakat. Adapun kegiatan yang pengabdian yang diberikan kepada peserta berupa pembekalan pengetahuan dan teknik terkini meliputi packaging, labelling, dan marketing yang efektif. Dengan pemahaman yang lebih baik diharapkan kualitas dan keamanan produk kelautan dan perikanan yang dihasilkan, sehingga memenuhi standar yang ditetapkan dan membangun kepercayaan konsumen.

Optimasi Budi Daya Ikan Nila Menggunakan Recirculating Aquaculture Systems (RAS) di Kolam Terpal Bundar: Analisis Kelayakan Tahap Pendederan Mahargyo, Dhady Pelita; Waluyo, Buyung Purnomo; Prayoto, Prayoto; Rahardjo, Sugeng; Wartini, Sri; Supriyadi, Bambang; Widyastuti, Rida
Jurnal Kebijakan Sosial Ekonomi Kelautan dan Perikanan Vol 15, No 2 (2025): Desember 2025
Publisher : Balai Besar Riset Sosial Ekonomi Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jksekp.v15i2.15605

Budi daya ikan nila (Oreochromis niloticus) memegang peran strategis dalam penyediaan protein perikanan, namun peningkatan produksi masih dihadapkan pada tantangan efisiensi dan keberlanjutan, khususnya pada tahap pendederan yang bersifat kritis. Penelitian ini bertujuan untuk menganalisis kelayakan teknis dan finansial pendederan ikan nila menggunakan Recirculating Aquaculture Systems (RAS) pada kolam terpal bundar di SLP Magetan, Politeknik Kelautan dan Perikanan Sidoarjo. Penelitian dilakukan melalui pendekatan eksperimental berbasis demplot lapangan dengan pengumpulan data kualitas air, parameter teknis pemeliharaan, biaya investasi dan operasional, serta hasil produksi. Analisis kelayakan finansial dilakukan menggunakan indikator keuntungan usaha, Revenue - Cost Ratio, Break Even Point, Net Present Value, Internal Rate of Return, dan Payback Period. Hasil penelitian menunjukkan bahwa sistem RAS menghasilkan keuntungan bersih Rp213.625 per siklus dengan nilai Revenue - Cost Ratio sebesar 1,10 dan Break Even Point penjualan sebesar Rp1.658.317,95 per siklus. Analisis jangka panjang menunjukkan nilai Net Present Value sebesar Rp17.178.294 pada tingkat suku bunga 13% serta Internal Rate of Return sebesar 27,58%, yang mengindikasikan bahwa usaha mampu menciptakan nilai tambah dan tingkat pengembalian yang kompetitif. Namun demikian, Payback Period selama 12 tahun 7 bulan melampaui umur proyek delapan tahun, menunjukkan keterbatasan dari sisi likuiditas dan kecepatan pengembalian modal. Temuan ini menegaskan bahwa pendederan nila berbasis RAS layak secara teknis dan finansial dalam perspektif nilai dan pengembalian, tetapi memerlukan optimasi biaya awal dan dukungan pembiayaan agar berkelanjutan. Implikasi penelitian ini memberikan dasar empiris bagi pengambilan keputusan teknis dan kebijakan dalam pengembangan budidaya nila berbasis RAS.Title: Optimizing Tilapia Farming Using Recirculating Aquaculture Systems (RAS) in Round Tarpaulin Ponds: Feasibility Analysis of the Fingerling Stage Nile tilapia (Oreochromis niloticus) aquaculture plays a strategic role in global fish protein supply; however, production expansion continues to face efficiency and sustainability challenges, particularly during the critical fingerling stage. This study aims to evaluate the technical and financial feasibility of tilapia fingerling production using a Recirculating Aquaculture System (RAS) in round tarpaulin ponds at SLP Magetan, Politeknik Kelautan dan Perikanan Sidoarjo. The research employed a field-based experimental demonstration plot, collecting data on water quality, husbandry performance, investment and operational costs, and production output. Financial feasibility was assessed using profit analysis, Revenue–Cost Ratio, Break Even Point, Net Present Value, Internal Rate of Return, and Payback Period. The results indicate that RAS-based fingerling production generates a net profit of IDR 213,625 per cycle with a Revenue–Cost Ratio of 1.10 and a Break Even Point of IDR 1,658,317.95 per cycle. Long-term analysis shows a positive Net Present Value of IDR 17,178,294 at a 13% discount rate and an Internal Rate of Return of 27.58%, confirming the project’s ability to create economic value and offer a competitive return. Nevertheless, the Payback Period of 12 years and 7 months exceeds the project lifespan of eight years, indicating constraints related to liquidity and capital recovery speed. These findings suggest that RAS-based tilapia fingerling production is technically viable and financially attractive in terms of value creation, yet requires cost optimization and appropriate financing schemes to enhance long-term sustainability. The study provides empirical evidence to support technical decision-making and policy formulation for sustainable RAS-based tilapia aquaculture.

Risk Analysis of Steel Railway Bridges Based on Rating Factor, Earthquake, and Importance Factor Prasetyo, Aulia Azis; Triwiyono, Andreas; Supriyadi, Bambang
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19038

Railway bridges are critical infrastructure components that are essential to support and maintain the integrity of major rail transportation networks. Indonesia is located in a tectonic zone known as the Ring of Fire. Risk assessment of these bridges is critical. This research not only considers the physical condition or vulnerability of the bridge itself but also the risk posed by earthquakes and the level of importance of the bridge. The research was conducted on 4 bridges located in East Java Province, namely the BH-129, BH-262, BH-275, and BH-314 Bridges. The rating factor, hazard level, and importance factor influence the risk level. The assessment process starts by using the Bridge Management System (BMS) method and Structure Analysis Program (SAP2000) to assist in calculating the Rating factor. Determining the level of danger by referring to the Earthquake Hazards Map and the Indonesian Earthquake Code (SNI 2833: 2016), The importance is taken based on the level of operational importance of the bridge referring to the same standard. The results show that the four bridges have the same risk value of 0.7809 for each bridge. The results underscore the urgent need for proactive measures to reduce the potential adverse impacts of bridge structure failure. Recommended interventions include strengthening structural elements, increasing inspection frequency, improving maintenance protocols, and, if necessary, replacing compromised structures. These strategies are critical due to the high risk and significant impact on rail safety and operations, especially in areas prone to natural disasters. The results of this study reinforce the urgency of improving the resilience of bridge infrastructure to earthquake threats to maintain the stability and safety of rail transportation in Indonesia.

Dynamic Response of Bridge Decks to Steady State Wind Loads: A CFD Approach Supriyadi, Bambang; Triwiyono, Andreas; Farhan, Muhamad
ASTONJADRO Vol. 15 No. 1 (2026): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v15i1.19421

Indonesia, as an archipelago nation located on the equator, is affected by alternating Asian and Australian monsoon systems throughout the year. The east monsoon spans from April to September, while the west monsoon occurs from October to March. In Samarinda, prevailing southern winds lead to significant fluctuations in speed and direction, impacting the stability of bridge structures. Extreme wind events pose risks to suspension bridges through aerodynamic phenomena like flutter, galloping, and vortex shedding, which impose substantial dynamic loads on the structure.This study focuses on analyzing the dynamic response of bridge decks under steady state wind loads. Daily wind data collected from January 2023 to January 2024 revealed wind speeds of 3, 4, and 5 m/s, with extreme speeds reaching 14 and 20 m/s. Steady state simulations were conducted using the simpleFoam solver in Simscale at these speeds, along with the critical velocity of 8.764 m/s derived from the bridge deck's cross-section. The simulation results provided valuable insights into pressure distributions and lateral displacement on the deck.Findings indicate that lateral displacement at a wind speed of 20 m/s reaches 1.235 m, which exceeds design limits and highlights potential structural vulnerabilities. These results demonstrate the effectiveness of steady state CFD simulations in assessing wind-induced effects on bridge structures and underline the importance of mitigation strategies to ensure stability.

Co-Authors Ahmad Muhajir, Ahmad Ali Awaludin Amalia Alifiani, Amalia Amalia, Alifiani, Amalia, Aminullah, Akhmad Andi Asrul Sani, Andi Asrul Andreas Triwiyono Anggono Ariebowo, Anggono Arief Fadhilah Astalis Ulul Absor, Didib Atiek Suprapti Atin Supriatin, Atin bambang adji Bambang Adji Murtomo Bambang Irawanto Bayu Sasongko Carera, Adela Diaz Priantara dimas Rachmaputra Djoko Sulistyo Eddy Prianto Edward Endriarto Pandelaki, Edward Endriarto Ergiyanti, Kharisma Erni Setyowati Faisal Nufus, Faisal Fajriyan Saiful, Fajriyan Fathurrahman Fathurrahman Fauzannur, Fauzannur Fitri Rachmawati Gagoek Hardiman H, I Gede Agung Shri Parta Hendro Trilistyo Hermin Werdiningsih Hermini Susiatiningsih indah dwi Jantu, Mochamad Athar Jefri Putri Nugraha Kustiandika, Salsabila Mahargyo, Dhady Pelita Making, Maria Yasinta Menge Muda, Johanes B Muhamad Farhan Muslikh Muslikh Nadia Farabi, Nadia Nugraha, Jefry Putri Prasetyo, Aulia Azis Prayoto Prayoto Prayoto Priono, Bowo Purba, Luki Hariando Purbonuswanto, Welius R Siti Rukayah Rahardjo, R. Sugeng Rahardjo, Sugeng riska arrasy Safinta Rhosa Fajari, Safinta Rhosa Sasongko, Dimas Bayu Simanjuntak, Salomo Sri Wartini sukawi sukawi Suprapto Siswosukarto Surahmat, Djoko Suseno, Dewi Alima Nostalia Timur, Dya Ayu Cahya Titien Woro Murtini Umi Khoiroh, Umi Waluyo, Buyung Purnomo Widyastuti, Rida Wijayanti Wijayanti Wiku Adhiwicaksana Krasna Yushardi Yushardi, Yushardi

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