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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
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 Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Application of Nonlinear Finite Element Analysis on Shear-Critical Reinforced Concrete Beams Asdam Tambusay; Priyo Suprobo; Benny Suryanto; Warren Don
Journal of Engineering and Technological Sciences Vol. 53 No. 4 (2021)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2021.53.4.8

Abstract

This paper presents the application of a smeared fixed crack approach for nonlinear finite element analysis of shear-critical reinforced concrete beams. The experimental data was adopted from tests undertaken on twelve reinforced concrete beams by Bresler and Scordelis in 1963, and from duplicate tests undertaken by Vecchio and Shim in 2004. To this end, all beams were modeled in 3D using the software package ATENA-GiD. In the modeling, the nonlinear behaviors of the concrete were represented by fracture-plastic constitutive models, which were formulated within the smeared crack and crack/crush band approaches. The applicability of nonlinear analysis was demonstrated through accurate simulations of the full load-deflection responses, underlying mechanisms, crack patterns, and failure modes of all 24 beams. Detailed documentation of the results is presented to demonstrate the potential and practical value of nonlinear finite element analysis in providing an informed assessment of the safety and performance of reinforced concrete structures.
Analisis Perilaku Material dan Komposisi Engineered Cementitious Composite : Review Studi Indra Komara; Priyo Suprobo; Faimun Faimun; Data Iranata
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol 10 No 2 (2021): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.208 KB) | DOI: 10.35139/cantilever.v10i2.103

Abstract

Engineered Cementitious Composite (ECC) concrete or micromechanical modeled concrete using analysis of a mixture of fiber and other added materials can produce a tensile strain capacity of up to three hundred to five hundred times compared to the strain capacity of conventional concrete. A review related to several studies that have been carried out previously on the properties of ECC and their constituent materials is presented in this paper. The behavior of the material is reviewed as an investigation parameter followed by determining the composition of the mixture, namely the effect of the water-cement ratio, the shape and length of the fiber and the addition of additives. The fiber volume fraction review was limited to between 2% to 3%, which resulted in outstanding tensile strain behavior. As it is known, ECC has an excellent capacity in terms of strain behavior which is accompanied by a large number of mico cracking patterns. ECC crack widths are usually predominantly less than 100 μm. ECC behavior is closer to that of steel which can bend or be ductile, whereas conventional concrete is brittle.
PREDICTING THE FLEXURAL RESPONSE OF A REINFORCED CONCRETE BEAM USING THE FRACTURE-PLASTIC MODEL Asdam Tambusay; Priyo Suprobo
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6470

Abstract

This paper describes an attempt to predict the flexural response of a reinforced concrete (RC) beam using nonlinear finite element analysis. To facilitate direct comparison, the beam was tested experimentally under four-point bending with the load increased monotonically. The load-deflection response, crack pattern and failure mode were observed in the experiment. Analysis incorporating the application of ATENA 3D was performed using the fracture-plastic model which is based on the classical orthotropic smeared crack formulation and crack band model. The applicability of this model was demonstrated through detailed simulation of RC beam with identical geometry, reinforcement arrangement, and material properties. From this study, it is found that the overall predicted responses are in very good agreement to those obtained from the experiment. It is also found that the feature in ATENA enables the presentation of reasonably maximum principal strains of concrete and rebar elements which can, therefore, be associated with the predicted crack bands.
SORPTIVITY AND CHLORIDE PENETRABILITY EVALUATION OF CONCRETE INCORPORATING FLY ASH AND SILICA FUME Wahyuniarsih Sutrisno; Gabriel Ghewa; Priyo Suprobo
Journal of Civil Engineering Vol 34, No 2 (2019)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v34i2.6576

Abstract

Diffusion is believed to be the main mechanism of fluid ingress into the concrete. However, in partially saturated concrete, the fluid will mainly be absorbed by the capillary suction mechanism, which associates with the sorptivity properties of the concrete. This paper presents the results of an experimental program to investigate the influence of Portland cement substitution with Silica Fume (SF) and Type F Fly Ash (FA) on the rate of absorption, which also known as sorptivity, and chloride penetration of concrete. The sorptivity of the concrete was evaluated according to ASTM 1585, while the chloride penetration was evaluated according to ASTM C 1202. By substituting part of cement with FA and SF, it was found that the sorptivity of concrete is reduced. Furthermore, all type of concrete with supplementary material, including CFA, CSF and CSM, is confirmed to enhance the ability of concrete to resist chloride penetration compared yo normal concrete (NC).
SHEAR BUCKLING ANALYSIS OF CORRUGATED WEB I-GIRDER WITH 3D NONLINEAR FINITE ELEMENT METHOD Ni Putu Ary Yuliadewi; Heppy Kristijanto; Bambang Piscesa; Priyo Suprobo; Faimun Faimun
Journal of Civil Engineering Vol 36, No 2 (2021)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v36i2.9611

Abstract

This paper presents a shear buckling analysis of corrugated web I-girder beam using nonlinear finite element analysis. An in-house finite element package called 3D-NLFEA is used in the simulation. The steel material is modelled as solid elements with one-eight aspect ratio between the element size and its thickness. The double sine waves equation is used to generate the initial imperfection in the corrugated web. The nonlinear geometry deformation, which is essential in capturing the buckling behavior, is considered using the 2nd order analysis in 3D-NLFEA. A comparison with the carried out experimental test in the laboratory showed that the peak prediction from the analytical model was in good agreement. Furthermore, using the double sine waves equation as the initial imperfection can closely predict the buckling mode and shapes of the corrugated web I-girder as obtained from the experimental test.
Kajian metode penentuan kekuatan momen retak tiang pancang spun pile Candra Irawan; I Gusti Putu Raka; Priyo Suprobo
Journal of Civil Engineering Vol 35, No 1 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v35i1.7790

Abstract

This paper describes the results of a study carried out experimentally on the determination of the moment strength of spun pile piles. The methods used are visual observation, load-displacement curve evaluation, and tensile strain analysis. The experimental results show that a load of data taken is a little late between 3 and 9 % compared to the results based on load-displacement curve. The crack load accuracy results from the load-deflection curve analysis were validated by the PC bar tensile strain reading. The deflection at crack read on the load-deflection curve is the same as the deflection at the start of the tensile strain jump on the PC bar.
Pengaruh Beban Berulang terhadap Lebar Retak Pelat Beton Satu Arah dengan Pendekatan Mekanika Retakan Agoes Soehardjono Moesono Djojoatmodjo; I Gusti Putu Raka; Priyo Suprobo
Jurnal Teknik Sipil Vol 11 No 1 (2004)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2004.11.1.3

Abstract

Abstrak. Masalah lebar retak merupakan hal yang masih memerlukan penelitian lebih lanjut. Rumusan yang ada masih menunjukkan penyebaran yang lebar dan pengaruh beban berulang terhadap lebar retak dianggap belum memuaskan. Hal ini telah diungkapkan oleh beberapa peraturan internasional seperti Eurocode 2 dan ACI 318. Analisis tentang pengaruh beban berulang terhadap lebar retak pelat beton satu arah dengan pendekatan mekanika retakan akan mengamati pengaruh variasi tegangan baja, angka tulangan, dan beban berulang. Analisis tinggi retak awal (ξi ) dan laju perambatan retak (ξi = f(fs,N)) pada material komposit (beton bertulang) akan dibahas dalam menentukan lebar retak. Perhitungan lebar retak merupakan pengembangan rumusan hasil eksperimen (A. Carpinteri) dan peneliti lain dalam menentukan rumusan usulan. Studi parameter dilakukan terhadap pelat beton dengan memperhitungkan faktor intensitas tegangan KIC akibat kombinasi beban aksial / momen, dan hasilnya menunjukkan bahwa parameter tegangan baja dan beban berulang merupakan parameter yang penting. Ternyata pada tegangan baja tertentu (fs/fy = 0,6) dan beban berulang diatas nilai tertentu (N >8.560.000 kali), beban berulang (N) mempengaruhi lebar retak dengan fungsi logaritma pangkat (w = 0,1267 log 0,2495) sampai kondisi batas lelah (N = 10.000.000 kali).Abstract. The problem of crack width is the case that must be observed further. The formula available still shows wide scatter and the effect of repeated loading to crack width regarded that it has not satisfied yet. This case has been expressed by some international rules such as Euro code 2 and ACI 318. The analyze about the effect of repeated loading to crack width on one-way slab with fracture mechanic approach will observe the effect of the variation of the steel stress, the reinforcement ratio and the repeated loading. The analyze of the initial crack depth (ξi) and the crack growth rate (ξi = f(fs,N)) on composite material (reinforced concrete) will be discussed to determine the crack width. The crack width calculation is the development of the result of experiment (A.Carpinteri) and other observer to determine proposed formula Parameter study is done to the concrete slab by calculating the stress intensity factor KIC due to the axial / moment load combination, and the result shows that the steel stress and the repeated loading parameter are the important parameter. In fact in the steel stress (fs/fy= 0,6) and the repeated loading above certain value (N > 8.560.000 times), the repeated loading effect the crack width with power logarithmic function (w = 0,1267 log 0,2495) until fatigue limit state (N = 10.000.000 times).
Investigation of Water Absorption for Concrete Using Supplementary Materials Gabriel Jose Posenti Ghewa; Priyo Suprobo; Djoko Irawan; Sutrisno Wahyuniarsih; Tambusay Asdam
IPTEK The Journal for Technology and Science Vol 31, No 3 (2020)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v31i3.5596

Abstract

Concrete’s durability is the key factor that affects the service life of the concrete structure. One factor that affects the durability properties of concrete is its pore structure, which can be investigated by analyzing the materials’ absorption rate. For the structures with direct contact with water, water absorption can change the pore structure’s behavior, affecting the durability of the conc in the long term rate. It is important to research to find the water absorption properties of concrete with different mixtures. This research investigates the rate of absorption of concrete by using fly ash and silica fume. Based on secondary absorption properties, the result shows that 15% fly ash in normal concrete increases the resistance to water penetration by 23%. The usage of 5% Silica Fume increases the resistance by 11.8%. The usage of 5% silica fume + 10% fly ash increases the resistance by 16.2%. It shows that the use of supplementary materials in concrete increases the resistance of water penetration. In this research, the usage of 15% fly ash as cement replacement shows the best result.
Prediction of Rust Thickness in Reinforced Concrete Structures to Enhanced the Asset Management for Coastal Infrastructures Wahyuniarsih Sutrisno; I Ketut Hartana; Priyo Suprobo
Journal of Infrastructure & Facility Asset Management Vol 1, No 2 (2019): Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1274.86 KB) | DOI: 10.12962/jifam.v1i2.5969

Abstract

Corrosion in reinforced concrete structure is a serious problem, especially for coastal infrastructure. Managing the coastal infrastructure from corrosion is a really essential action to make sure that the infrastructure can be used properly throughout its service live. This research focused on analyzing the rust thickness on steel reinforcement due to corrosion. Series of corrosion test using galvanostatic was performed in this research. Furthermore, a predictive model based on Farraday’s Law with uniform corrosion assumption also developed in this research and compared with the experimental data. Based on the simulation result, it was found that the predictive model of rust thickness based on Farraday’s Law is capable to simulate the corrosion process and thickness of the rust.
A REGIONAL REFINEMENT FOR FINITE ELEMENT MESH DESIGN USING COLLAPSIBLE ELEMENT Priyo Suprobo; Tavio Tavio
Civil Engineering Dimension Vol. 2 No. 2 (2000): SEPTEMBER 2000
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.119 KB) | DOI: 10.9744/ced.2.2.pp. 83-91

Abstract

A practical algorithm for automated mesh design in finite element analysis is developed. A regional mixed mesh improvement procedure is introduced. The error control%2C algorithm implementation%2C code development%2C and the solution accuracy are discussed. Numerical example includes automated mesh designs for plane elastic media with singularities. The efficiency of the procedure is demonstrated. Abstract in Bahasa Indonesia : regional+refinement%2C+mesh+generation%2C+isoparametric+element%2C+collapsible+element
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