Articles
<![CDATA[Analisa Numerik Pada Kolom Beton Pracetak Mutu-Tinggi dengan Sambungan Grouted Sleeve ]]>
<![CDATA[Amalia, Rizky]]>;
<![CDATA[Alrasyid, Harun]]>;
<![CDATA[Aji, Pujo]]>;
<![CDATA[Rofiq, Muhammad]]>
<![CDATA[ Jurnal Aplikasi Teknik Sipil Vol 19, No 3 (2021) ]]>
Publisher : <![CDATA[Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya ]]>
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DOI: 10.12962/j2579-891X.v19i3.8955
<![CDATA[Penggunaan beton mutu tinggi dan tulangan mutu tinggi untuk konstruksi beton pracetak memiliki keunggulan yaitu mampu menyediakan kolom dengan ukuran kecil pada lantai yang rendah, dan kecepatan konstruksi yang lebih tinggi dibandingkan dengan beton bertulang mutu normal. Sambungan mekanis tipe grouted sleeve (GS) untuk tulangan longitudinal mutu tinggi pada zona sendi plastis dipilih karena kolom pracetak dengan sambungan GS memberikan perilaku yang sama dengan kolom beton bertulang monolit. Penelitian ini menyajikan analisis nonlinear perilaku seismik kolom beton pracetak berkurvatur ganda dengan sambungan GS pada ujung kolom-pondasi. Dimensi kolom yang digunakan yaitu 600x600 mm. Kuat tekan beton adalah 74 MPa. Tulangan mutu tinggi SD685 (kuat leleh 685 MPa) dan SD785 (kuat leleh 785 MPa) masing-masing digunakan untuk tulangan longitudinal dan transversal. Pemodelan numerik dilakukan menggunakan rangkaian program elemen-hingga, 3DNLFEA. Hasil menunjukkan prediksi model 3DNLFEA memiliki kesesuaian yang baik dengan hasil eksperimen. Pelelehan tulangan longitudinal, pola keretakan yang terjadi, dan kegagalan tulangan transversal disajikan.]]>
<![CDATA[Numerical Investigation of Reinforced Concrete Beam Due to Shear Failure ]]>
<![CDATA[Piscesa, Bambang]]>;
<![CDATA[Alrasyid, Harun]]>;
<![CDATA[Prasetya, Dwi]]>;
<![CDATA[Iranata, Data]]>
<![CDATA[ IPTEK The Journal for Technology and Science Vol 31, No 3 (2020) ]]>
Publisher : <![CDATA[IPTEK, LPPM, Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j20882033.v31i3.7385
<![CDATA[This paper investigates the possibility of using a multi-surface plasticity model to predict shear failure in reinforced concrete beams. The analysis is carried out using the in-house software called 3D-NLFEA. The constitutive model for the concrete material is based on the plasticity-fracture model, which had previously developed to simulate the behavior of concrete cover spalling in reinforced concrete columns. To obtain the asymmetric shear failure pattern, random material properties imperfection for each meshed element is used. Two beams available in the literature are investigated and compared with the analysis results using 3D-NLFEA. From the comparisons, excellent agreement between the analysis and the test result was obtained. 3D-NLFEA can predict the peak load accurately. The peak load prediction only varies 2.19% for beam OA1 and 3.28 % for beam OA2, and it was lower than the test results. The failure crack patterns also show a typical diagonal crack extension from the support to the loading steel plate.]]>
<![CDATA[Non-linear finite element analysis of reinforced concrete deep beam with web opening ]]>
<![CDATA[Ferry Alius]]>;
<![CDATA[Bambang Piscesa]]>;
<![CDATA[Faimun Faimun]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Data Iranata]]>
<![CDATA[ Journal of Civil Engineering Vol 35, No 1 (2020) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j20861206.v35i1.7480
<![CDATA[The use of Reinforced Concrete (RC) deep beams in building may requires web openings or holes for electrical and mechanical utilities passage. This web opening will change the behavior of RC deep beam and may resulted in early cracks even at service load. Hence, it is important to use a suitable tool to predict the full response of RC deep beam with opening. For that purpose, nonlinear finite element method using 3D-NLFEA software package which utilize a plasticity-fracture model is used to predict the behavior of RC deep beam. One deep beam specimen available in the literature is investigated. To study the effect of using structured and unstructured mesh, as well as different element types on the load deflection curve, hexahedral and tetrahedral solid element was used. From the comparisons, it was observed that the crack pattern between two different meshes was not similar. Structured mesh often has straighter crack propagation compared to the unstructured mesh. The load deflection curve for both models are similar and both models were performed satisfactorily in predicting the peak load of the deep beam.]]>
<![CDATA[ASSESSMENT OF NOMINAL SHEAR STRENGTH OF REINFORCED CONCRETE COLUMN ]]>
<![CDATA[Dea Fauziah Larasati]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Data Iranata]]>
<![CDATA[ Journal of Civil Engineering Vol 36, No 1 (2021) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j20861206.v36i1.9090
<![CDATA[: SNI 2847-2019 and ACI 318-19 have regulated the use of materials in the design for shear strength. This study presents an evaluation of nominal shear strength in Reinforced Concrete (RC) column from SNI 2847-2019 and ACI 318-19 by variants of the RC columns experimental database. RC column variants consist of normal strength and high strength RC column with a total of 162 specimens. Furthermore, the database also provides a variety of shear span to depth ratio and axial-load ratio. In this study, the calculation was carried out the mean and the coefficient of variation of measured to calculated strength ratio which is according to SNI, ACI, and other experimental models. Both SNI 2847-2019 and ACI 318-19 have 2 different (concrete nominal shear strength) equations. The calculation results show that the equation is more conservative in both SNI and ACI compared to other nominal shear strength equations. Overall, the combination of both normal strength and high strength RC columns, the calculation using ACI 318-19 with the first nominal shear strength equation can be said to be more conservative than any other calculations models. This study also shows that by using the ACI 318-19 model in the second equation which is used the size effect modification factor , the results do not have a significant effect because the value is close to 1.]]>
<![CDATA[DUCTILITY EVALUATION OF REINFORCED CONCRETE COLUMN MADE OF NORMAL- TO HIGH-STRENGTH CONCRETE UNDER CONSTANT AXIAL LOAD LEVEL COMBINED WITH FLEXURAL LOADING USING NONLINEAR SECTIONAL FIBER BASED MODEL ]]>
<![CDATA[Bambang Piscesa]]>;
<![CDATA[Dwi Prasetya]]>;
<![CDATA[Mudji Irmawan]]>;
<![CDATA[Harun Alrasyid]]>
<![CDATA[ Journal of Civil Engineering Vol 34, No 1 (2019) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j20861206.v34i1.5451
<![CDATA[This study presents the ductility evaluation of reinforced concrete column made of normal-strength material using various empirical stress-strain model with nonlinear sectional fiber based analysis. The purpose is to evaluate the confinement requirement for reinforced concrete column under high axial load level. The concrete strength considered in the analysis are varies from 30 to 70 MPa while the steel reinforcing bar yield strength considered is only 400 MPa. The ductility is evaluated by using the customized ductility index measurement. The ratio of the concrete cover to the concrete core is set to 0.1 but not more than 40 mm. Attard and Setunge’s concrete constitutive model is used in this investigation. Cover spalling behavior is considered in the analysis by including the restrained shrinkage effect on the concrete strength and the softening behavior. From this study, it was found that extra confinement is necessary to maintain the expected minimum level of ductility.]]>
<![CDATA[Numerical Analysis of Shear Behavior of High-Strength Reinforced Concrete Columns ]]>
<![CDATA[Teddy Yustiono]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Pujo Aji]]>;
<![CDATA[Yu Chen-Ou]]>;
<![CDATA[Yusronia Putri]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i6.3242
<![CDATA[Although the utilization of high-strength concrete and high-strength steel can reduced column dimension at high-rise building, the column aspect ratio remain low. These column were tended to dominate by shear failure than flexure failure. The research discusses the numerical analysis of shear critical of High-strength reinforced concrete columns. The Uniaxial Shear Flexure Method (USFM) was used to observe this behavior and examined on the test result. This study showed that USFM method provided conservative prediction. Some modification was proposed in order to improve this method when estimate the shear behaviour of high-strength reinforced concrete column.]]>
<![CDATA[Seismic Confinement Design for Rectangular Columns With Considering Shear Effect ]]>
<![CDATA[Julio Cezar Haryantho]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Pujo Aji]]>;
<![CDATA[Munarus Suluch]]>
<![CDATA[ IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2017i6.3231
<![CDATA[This research discusses the role of transverse reinforcement as seismic reinforced concrete columns confinement. The latest confinement design addressed for columns remains standing under certain level of axial compression and displacement demands. However, this purpose did not consider shear effect. An approach formulation to determine the amount of confinement for reinforcement concrete that account effect of shear is provided. This method is based on combined effects of axial and shear stress that found in coulomb failure criterion. The proposed formulation are tested in 163 column test result data base and compared with several building codes. The result showed that the formulation can reduce amount of confinement safely for most columns.]]>
<![CDATA[Prediksi Perilaku Lentur Kolom Beton Bertulang Mutu Tinggi Terhadap Kombinasi Beban Perpindahan Monotonik dan Aksial Rendah ]]>
<![CDATA[Muhammad Ali Rofiq]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Data Iranata]]>;
<![CDATA[Djoko Irawan]]>
<![CDATA[ Jurnal Aplikasi Teknik Sipil Vol 17, No 1 (2019) ]]>
Publisher : <![CDATA[Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya ]]>
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DOI: 10.12962/j2579-891X.v17i1.4899
<![CDATA[Penerapan material mutu tinggi mulai digunakan untuk membatasi luas kolom dilantai bawah struktur gedung tinggi. Spesimen kolom beton mutu tinggi dengan dimensi 600x600x1800 mm akan dimodelkan menggunakan program bantu ABAQUS dengan beban aksial secara konstan dan lateral displacement. Spesifikasi beton mutu tinggi 70 MPa, tulangan longitudinal mutu tinggi (SD685) dan tulangan transversal mutu tinggi (SD785) digunakan pada penelitian ini. Input beban aksial konstan yang digunakan adalah 0,1Agf'cdengan beban lateral displacement sampai gagal. Tujuan penelitian ini adalah untuk mengetahui perilaku hubungan force terhadap displacement kolom beton bertulang mutu tinggi yang terjadi akibat beban perpindahanlateral monotonik dan beban aksial rendah. Pemodelan elemen beton menggunakan solid CD38R dan tulangan menggunakan elemen truss T2D3 dengan mesh 100x100 mm. Hasil pemodelan kolom beton mutu tinggi menunjukkan bahwa prediksi FEA kolom beton mutu tinggi mempunyai korelasi yang baik dengan hasil eksperimen.]]>
<![CDATA[Permodelan Elemen Hingga Hubungan Balok-Kolom yang Menggunakan Headed Bar ]]>
<![CDATA[Yohanes Duran]]>;
<![CDATA[Harun Alrasyid]]>;
<![CDATA[Data Iranata]]>
<![CDATA[ Jurnal Aplikasi Teknik Sipil Vol 18, No 1 (2020) ]]>
Publisher : <![CDATA[Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya ]]>
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DOI: 10.12962/j2579-891X.v18i1.6034
<![CDATA[Hubungan balok kolom merupakan bagian dari elemen struktur dalam menahan gempa. Penelitian mengenai hubungan balok kolom telah dilakukan beberapa peneliti dengan melakukan kegiatan eksperimental dan analisa numerik. Pada umumnya kekuatan dari hubungan balok kolom tergantung dari pengangkuran tulangan. Kehadiran headed bar dapat menjadi alternatif untuk pengangkuran tulangan. Penelitian ini membahas model hubungan balok kolom dengan pengangkuran headed bar pada analisa elemen hingga. Hasil eksperimental dari penelitan mengenai hubungan balok kolom dalam dan luar digunakan dalam analisa elemen hingga. Analisa elemen hingga menggunakan program vector2. Hasil analisa menunjukkan bahwa prediksi perilaku menggunakan analisa elemen hingga memberikan kinerja dan pola retak yang serupa dengan hasil eksperimental]]>
<![CDATA[MODELING PULL-OUT BEHAVIOR OF THE DEFORMED REBAR EMBEDDED INSIDE THE REINFORCED CONCRETE ]]>
<![CDATA[Kohar Yudoprasetyo]]>;
<![CDATA[Bambang Piscesa]]>;
<![CDATA[Harun Alrasyid]]>
<![CDATA[ Journal of Civil Engineering Vol 37, No 1 (2022) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j20861206.v37i1.11871
<![CDATA[Abstract: This study presents the modeling of the pull-out behavior of deformed bars embedded inside the reinforced concrete element. The simulation uses an in-house finite element package called 3D-NLFEA. Sufficiently small solid elements that consider the frictional resistance and mechanical interlocking between the bar thread and the concrete matrix were used in the simulation. The effect of concrete compressive strength, cover thickness, and stirrup configuration on the pull-out capacity of the modeled specimens are investigated thoroughly. The modeling found out that the 3D-NLFEA package can capture the bond-fracture process at the interface between the bars and concrete. The fracture that occurs in the concrete was dominated by tensile splitting failure. The presence of stirrups that confined the concrete and restrained the crack propagation significantly influences the pull-out capacity, cracking pattern, and failure behavior at the bar interface with the concrete. The analysis results from 3D-NLFEA are also compared with the 3D-RBSM analysis results available in the literature. From the comparison between the two packages, it can be concluded that the analysis result from 3D-NLFEA is somewhat more conservative compared to the 3D-RBSM.]]>
