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All Journal International Journal of Engineering Science and Technology Development (IJEST) Jurnal Teknik ITS IPTEK The Journal for Technology and Science International Conference on Engineering and Technology Development (ICETD) Journal of Engineering and Technological Sciences Journal of Civil Engineering Jurnal Teknik Sipil Civil Engineering Dimension Civil Engineering Journal Spektra: Jurnal Fisika dan Aplikasinya Journal of Infrastructure and Facility Asset Management Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of Comprehensive Science Makara Journal of Technology Seminar Nasional Ilmu Terapan

Priyo Suprobo

Departemen Teknik Sipil FTSP-ITS

Author-ID : 394184

Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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PROPERTI MEKANIK TARIK BAJA WIRE O 3.2 MM DAN PC BAR O 7.1 MM SEBAGAI TULANGAN PADA TIANG PANCANG BETON PRATEKAN SPUN PILE Candra Irawan; I Gusti Putu Raka; Faimun Faimun; Rudy Djamaluddin; Priyo Suprobo; Gambiro Soeprapto
Spektra: Jurnal Fisika dan Aplikasinya Vol 3 No 1 (2018): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 3 Issue 1, April 2018
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Abstrak Paper ini menyajikan properti mekanik tarik baja tulangan wire berdiameter 3.2 mm dan PC bar berdiameter 7.1 mm yang digunakan sebagai tulangan transversal dan longitudinal untuk tiang pancang beton pratekan spun pile. Pembebanan aksial tarik dilakukan menggunakan mesin Universal Testing Machine (UTM). Regangan tarik yang terjadi pada baja tulangan dibaca oleh sensor strain gauge yang ditempel pada bagian sisi luar baja tulangan. Beban tarik dan regangan baja tulangan direkam menggunakan alat data logger. Hasil pengujian tarik ini berupa kurva hubungan antara tegangan dan regangan. Analisis kurva tersebut menghasilkan modulus elastisitas PC bar adalah 230 GPa dan wire dan 220 GPa. PC bar memiliki tegangan leleh 1404 MPa dan tegangan ultimit 1469 MPa. Regangan saat leleh PC bar 0.007 dan regangan ultimitnya 0.023. Sedangkan wire memiliki tegangan ultimit 712 MPa. Nilai elongasi wire dan PC bar adalah 2.0% dan 8.7%. Kata-kata kunci: properti mekanik tarik, PC bar, wire, spun pile. Abstract This paper presents the tensile mechanical properties of the 3.2 mm in diameter of the wire and 7.1 mm in diameter of PC bars used as transverse and longitudinal reinforcement for prestressed spun piles. The axial tensile loading is carried out on using Universal Testing Machine (UTM) machine. The tensile strain was occurring in the reinforcing steel read by the strain gauge sensor attached to the outer side of the reinforcing steel. The tensile load and reinforcement steel strain are recorded using the data logger. The result of this tensile test is a curve of the stress and strain relationship. The elastic modulus of PC bar and the wire is 229577 MPa and 219774 MPa. The yield and ultimate stress of the PC bar are 1404 MPa and 1469 MPa. The yield and ultimate strain are 0.007 and 0.023, respectively. Wire 3.2 mm has a 712 MPa ultimate stress. The value of wire and PC bar elongation is 2.0% and 8.7%, respectively. Keywords: tensile mechanical property, PC bar, wire, spun pile.

Dynamic Characteristic Identification of Seismic-Excited Multi-Story Buildings through Response-Only Technique Budipriyanto, Agung; Suprobo, Priyo
Makara Journal of Technology Vol. 18, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Identifying dynamic characteristics of civil engineering structures is still a challenging task. It intends to assess behavior of the structures under time-dependent loads. This paper discusses a methodology suitable for identifying the characteristics of multi-story buildings using only their measured response under earthquake ground excitations. Appropriateness of technique used for structural identification was corroborated through coherence of the structure’s responses. The methodology was applied for identifying the characteristics of 14-story and 20-story office buildings located in a high seismic region. Responses of these two buildings recorded during three different seismic ground motions were investigated. The buildings’ response spectral densities and singular values were computed and utilized to identify their dynamic characteristics, viz. modal frequencies, damping factors, and mode types such as bending or torsion mode. Results of this study were validated through comparisons with the results reported using different structural identification techniques. It indicated that the methodology implemented in this study was capable of identifying the dynamic characteristics of multi-story buildings using responses under seismic ground motions.

APPLICATION OF DIGITAL IMAGE CORRELATION TO CAPTURE THE CRACK MOUTH OPENING DISPLACEMENT OF THE NOTCHED STEEL FIBER REINFORCED CONCRETE (SFRC) BEAM Mudji Irmawan; Bambang Piscesa; Priyo Suprobo; Harun Al Rasyid
Journal of Civil Engineering Vol 37, No 2 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v37i2.14046

The application of digital image correlation (DIC) to capture any point in the experimental test is found to be promising. Using the DIC and appropriate tool can overcome the limitation of the traditional sensors to capture the movement or displacement in the tested specimen. In this study, an open-source DIC called Digital Image Correlation Engine (DICE) is used to capture the crack mouth opening displacement (CMOD) of the notched steel fiber reinforced concrete (SFRC) beam with points tracking method. There are three beam specimens with different sizes and similar aspect ratios reported in this paper. All beams have 0.5% steel fiber volumetric content. The SFRC beams are marked with points and tested under a three-point bending flexural test. Custom firmware for Canon DSLR 650D digital camera called Magic Lantern is used to capture the pictures per one second. DICE software is used to analyze the point movements and dumped the output file. ParaView 5.9.0 is then used to visualize the data. A method to calibrate the point coordinate with actual measurement is proposed. A small script is written in Visual Basic Application (VBA) in Microsoft Excel to correlate the displacement for each point of interest with the recorded applied load. With the developed script, any point of interest tracked with DICE can be related to the recorded data from the data logger. From this study, the obtained CMOD with the corresponding applied load is presented, which can be used to investigate the flexural fracture energy of the SFRC beam.

MODELLING OF REINFORCED CONCRETE COUPLING BEAMS WITH HEADED BARS: VERIFICATION AND PARAMETRIC STUDIES Tambusay, Asdam; Krisnajana, Joshua F; Suryanto, Benny; Suprobo, Priyo
Journal of Civil Engineering Vol 38, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v38i3.17791

This paper explores the accuracy of nonlinear finite element procedures implemented in ATENA in predicting the load-drift response of reinforced concrete coupling beam with headed bars under reversed cyclic loading. In this study, one of the coupling beams incorporating headed bars, tested by Seo and co-workers in 2017, is analysed and its response at different lateral drifts is discussed. Parametric analyses, studying the influence of reinforcement layouts, are also presented. It is shown that the hysteresis loops of the coupling beam could be predicted accurately, along with the crack patterns at different stages of loading and failure mode. It is also shown that the omittance of headed bars resulted in more pronounced bond-slip effects and a more severe pinched response in the post-peak region, highlighting the importance of providing adequate headed reinforcement. A similar trend was observed in the coupling beam with the omittance of U-bars and horizontal transverse reinforcements, whereas stirrup relaxation was found to increase the prominence of shear failure.

PERENCANAAN DAN PERANCANGAN COWORKING SPACE UNTUK PELAKU EKONOMI KREATIF DI KOTA SURABAYA DENGAN PENDEKATAN ARSITEKTUR PERILAKU Wijaya, Belinda Raquel; Shirleyana; Suprobo, Priyo
Seminar Nasional Ilmu Terapan Vol 8 No 1 (2024): Vol 8 No 1 (2024): Seminar Nasional Ilmu Terapan (SNITER) 2024
Publisher : Universitas Widya Kartika Surabaya

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Recently, the creative industry has begun to develop in the community, especially with the development of the digital world. Many young people who pioneer work in the creative industry world start from becoming freelancers or creating startup companies and need a place to work and connect. So, with the planning and design of coworking space with the theme of behavioral architecture, it will help accommodate the work needs of creative industry workers. Architectural programming is used as a design method consisting of the preparation stage, problem identification, data collection, analysis, design concepts, and architectural design. The design location is on Jalan Dr. Ir. H. Soekarno, Surabaya. The theme of behavioral architecture is made with a vibrant macro concept that reflects the behavior of creative industry workers in working and territoriality in the micro concept of space. The result of applying the concept in the design is a building that has one mass to facilitate access to all rooms and is circular in shape that depicts dynamics and room design that supports certain activities with the selection of furniture colors. The planning and design of coworking space is made with consideration of various studies and analyzes, so that the design of coworking space is expected to be more optimal.

Nonlinear Analysis of Reinforced Geopolymer Concrete Beams Karen Chong; Benny Suryanto; Asdam Tambusay; Priyo Suprobo
Civil Engineering Dimension Vol. 24 No. 1 (2022): MARCH 2022
Publisher : Institute of Research and Community Outreach - Petra Christian University

To decarbonise the current construction sector and meet the global net-zero target, there is a pressing need to develop an environmentally friendly alternative to Portland cement concrete. Alkali activated and geopolymer concrete have much to offer in this regard. At present, however, there is limited study on the behaviours of alkali activated structural members, particularly on flexural members, which encompass most practical design situations. This paper presents a database of 37 tests on slender alkali activated and geopolymer concrete beams available in the literature, with the aim to investigate the flexural strengths of this alternative concrete when used as a structural member. In addition, the results of nonlinear finite element analyses on fourteen reinforced geopolymer concrete beams are presented to highlight key influencing factors governing the behaviour and failure of flexural members. Of particular interest is to study the influence of reinforcement ratio, compressive strength, and material brittleness on the overall strength and ductility. Overall, it is shown that the flexural response of geopolymer concrete beams under short-term loading is comparable to that of ordinary reinforced concrete beams.

Digital Image Correlation for Cement-based Materials and Structural Concrete Testing Asdam Tambusay; Benny Suryanto; Priyo Suprobo
Civil Engineering Dimension Vol. 22 No. 1 (2020): MARCH 2020
Publisher : Institute of Research and Community Outreach - Petra Christian University

This paper presents the application of a low-cost digital image correlation (DIC) system for automated crack mapping. The system employed makes use of a conventional digital camera, a remote image recording controller, and an open-source digital image correlation MATLAB software Ncorr. To showcase the potential of the proposed system, two case studies involving general structural and material testing were undertaken. In the first series, the DIC system was used to study the fracture processes in a reinforced concrete beam and to investigate the influence of key input parameters on the spatial quality of strain maps obtained from the DIC analysis. In the second series, the application of the DIC method was expanded to assist in the study of complex multiple micro-crack formations in ductile cement composite testing. It is shown that the strain maps obtained from the DIC technique have a close resemblance to the actual crack patterns

Modelling of Shear-critical, Lightly Reinforced Concrete T-beams with Externally Bonded CFRP using ATENA Science Fillbert Hanselly Njoko; Asdam Tambusay; Andrew Jamieson; Benny Suryanto; Priyo Suprobo
Civil Engineering Dimension Vol. 25 No. 2 (2023): SEPTEMBER 2023
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.25.2.67-77

This paper presents the finite element modelling of shear-critical reinforced concrete beams strengthened with U-wrapped CFRP fabrics using ATENA. Fracture-plastic constitutive models, implemented in the context of smeared crack and crush-band approach, were employed to represent the nonlinear behaviours of concrete. CFRP U-wraps were modelled as smeared reinforcement and bonded to the concrete surface using an interface element, considering appropriate bond properties. To this end, two large lightly reinforced concrete T-beams from tests undertaken by Brindley in 2018 were analysed and predictions of the load-deflection response and failure mode are presented to demonstrate the accuracy of the modelling. Moreover, parametric analyses were performed to assess the effectiveness of CFRP U-wraps for strengthening deteriorated members. It is shown that the response of the beams can be predicted accurately, capturing successfully the brittle shear failure mode observed experimentally. It is also shown that CFRP U-wraps are useful for reducing the brittleness of shear-critical beams.

Experimental Study of Two-way Half Slab Precast Concrete using Rextangular Rigid Connection Djoko Irawan; Ahmad Basshofi Habieb; Data Iranata; Priyo Suprobo; I Gusti Putu Raka
Civil Engineering Dimension Vol. 26 No. 1 (2024): MARCH 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.26.1.63-70

A half-slab precast concrete (HSPC) system with precast bottom layers and in-situ cast top layers has been widely applied in various constructions. It generally behaves as a one-way slab due to the absence of positive-flexural reinforcements in the perpendicular direction to the precast component. However, in some cases, the HSPC was also applied in a two-way slab system. Consequently, a particular design and treatment in the connection between precast members was required, so that the bending moment in two orthogonal directions could be accommodated. In the present study, an innovative rectangular rigid connection (RRC) in a two-way HSPC system was investigated through an experimental test. It was found that the RRC-HSPC presented only a 9.13% reduction of the load at the crack, a 16.44% reduction of the ultimate load, and a 6.06% increase of the deflection at the crack when compared to the monolithic one.

Perencanaan dan Perancangan Mixed-Use Apartemen Dikota Surabaya Dengan Pendekatan Arsitektur Tropis Nugroho, Wahyu Ery; Suprobo, Priyo; Jatmiko, Ary Dwi
Journal of Comprehensive Science Vol. 4 No. 9 (2025): Journal of Comprehensive Science
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jcs.v4i9.3568

Pesatnya urbanisasi dan keterbatasan lahan di Kota Surabaya mendorong perlunya pengembangan hunian vertikal yang efisien dan berkelanjutan. Konsep mixed-use apartemen menjadi solusi integratif untuk memadukan fungsi hunian, komersial, dan pendukung dalam satu kawasan. Namun, iklim tropis Surabaya dengan suhu tinggi, kelembaban, dan curah hujan yang intensif menuntut pendekatan desain yang adaptif guna mencapai kenyamanan termal dan efisiensi energi. Penelitian ini bertujuan untuk merencanakan dan merancang mixed-use apartemen di Surabaya dengan menerapkan prinsip-prinsip arsitektur tropis guna menciptakan lingkungan binaan yang nyaman, berkelanjutan, dan efisien energi. Penelitian menggunakan pendekatan kualitatif deskriptif-analitis melalui studi literatur, analisis tapak dan iklim, serta penerapan strategi desain pasif arsitektur tropis. Metode perancangan mengikuti tahapan analisis kebutuhan, perumusan konsep, pengembangan desain, dan evaluasi terhadap regulasi yang berlaku. Berhasil dirancang mixed-use apartemen dengan komposisi 37% area hunian, 28% area mall, 15% area perkantoran, dan 20% area penunjang. Penerapan strategi arsitektur tropis seperti secondary skin, material berpori, ventilasi alami, dan lansekap hijau terbukti efektif dalam menciptakan kenyamanan termal dan mengurangi ketergantungan pada sistem pendingin mekanis. Desain ini tidak hanya menjadi solusi terhadap keterbatasan lahan dan tantangan iklim tropis, tetapi juga berkontribusi dalam meningkatkan kualitas urban melalui penciptaan ruang publik yang dinamis dan hemat energi. Hasil penelitian dapat dijadikan referensi bagi pengembangan mixed-use di wilayah tropis lainnya.

Co-Authors . Faimun Agoes Soehardjono Moesono Djojoatmodjo Agoes Soehardjono Moesono Djojoatmodjo, Agoes Soehardjono Moesono Agung Budipriyanto Ahmad Basshofi Habieb Akmilia Aswarini Andrew Jamieson Apriansyah Apriansyah Apsari, Auliagitta K. Arie Febry Arie Febry Ary Dwi Jatmiko Asdam Tambusay Asdam Tambusay Asdam Tambusay Asdam Tambusay Bambang Piscesa Basuki , Benny Suryanto Benny Suryanto Benny Suryanto Diana Suteja Djamaluddin, Rudy Djoko Irawan Djoko Irawan Dwi Mide Febriyan Endah Wahyuni Endah Wahyuni Fillbert Hanselly Njoko Gabriel Ghewa Gabriel Jose Posenti Ghewa Gambiro Soeprapto Harun Al Rasyid Heppy Kristijanto I Gusti Putu Raka I Gusti Putu Raka I Ketut Hartana Indra Komara, Indra Iranata, Data Irawan, Candra Irmawan, Mudji Karen Chong Krisnajana, Joshua F Lailatul Fitriyah Mansur, Moh Safii Muhammad Rifky Trisnawardhana Ni Putu Ary Yuliadewi Nugroho, Wahyu Ery Sambodho, Kriyo Shirleyana Shirleyana Siti Nur Rahmah Anwar, Siti Nur Rahmah Soegeng Soetedjo Suryanto, Benny Suswanto, Budi Sutrisno, Wahyuniarsih Tambusay, Asdam Tavio, Tavio Wahyuniarsih Sutrisno Warren Don Wijaya, Belinda Raquel Yuyun Tajunnisa

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