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All Journal Syntax Literate: Jurnal Ilmiah Indonesia Gema Wiralodra Indonesian Journal of Engineering and Science (IJES) Jurnal Talenta Sipil Jurnal Ilmu Multidisplin Jurnal Indonesia Sosial Teknologi
Rosidawani, Rosidawani
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OPTIMIZATION OF STEEL PROFILE DIMENSIONS AND BOLT CONNECTIONS IN INTAKE STRUCTURES FOR ENHANCED STRUCTURAL INTEGRITY Costa, Anthony; Adhitya, Bimo Brata; Sadila, Yunira; Rosidawani, Rosidawani
Indonesian Journal of Engineering and Science Vol. 5 No. 2 (2024): Table of Contents: In progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v5i2.143

Abstract

Intake structures are facilities for clean water supply situated along riverbanks. These structures are reinforced concrete with pile foundations, and the intake structure comprises a profiled steel frame serving as the upper column-beam framework. The implementation of steel structures demands a high level of precision, particularly in designing connections between sectional steel beams and columns. This study, therefore, aims to determine the optimal dimensions for steel profiles by referring to the design of bolt connections as specified in SNI 1729-2020, particularly for steel beam columns subjected to pump loads and load combinations. The analysis concludes that all three material types meet the safety criteria, with a structural ratio value of ≤ 1 and structural deflection within the allowable limits. Additionally, after assessing the steel column and beam sections' capacity to bear pump loads, it was determined that the optimal bolt connection involved 8 bolts of 24 mm diameter. The ideal supplementary steel plate connection required a plate thickness of 13 mm.
Karekteristik Lumpur Ipal Kota Jambi Sebagai Bahan Campuran Material Konstruksi Qolbi, Muhammad Khofidul; Rosidawani, Rosidawani; Adhitya, Bimo Brata
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.847

Abstract

Jambi City IPAL is a new construction which is a container for processing Jambi City's domestic waste. The source of the sludge comes from household wastewater in Jambi City. The sludge produced from the Jambi city wastewater treatment process (IPAL) is dark brown in color and the sludge is floc in nature. District is mud whose grains are separated without coagulants, generally this mud contains sand, grit and small gravel fragments. Mud in the form of floc, namely (chemiflocc) is very large in volume, especially in WWTPs. The XRF results of WWTP mud show high levels of SiO2 and Al2O3, namely 61.56% and 26.93% respectively. The elements contained in cement are found in WWTP mud such as SiO2, Al2O3, Fe, CaO, K2O, MgO, and Na2O. If compared, WWTP mud has the same properties as cement. XRD test results show  crystal phase conditions show peaks with the highest count value at the position [o2Theta] 26.701OH. The SEM mud results show that the grains are in the form of fragments like irregular lumps with varying grain sizes. This condition shows that dry mud has good binding capacity. Jambi City WWTP waste sludge from XRF results has a mineralogical composition similar to cement, because it contains main oxides such as SiO2, Al2O3, CaO, and Fe. Based on its chemical composition, waste sludge has the potential to be used in the production of construction materials after being subjected to combustion treatment.
Analisis Metode Elemen Hingga (Finite Element Method) Perilaku Sambungan Haunched Gusset Plate dengan Penampang Dobel Kanal Septiadi, Irwandra; Rosidawani, Rosidawani; Aminuddin, Kiagus Muhammad
Jurnal Ilmu Multidisiplin Vol. 4 No. 2 (2025): Jurnal Ilmu Multidisplin (Juni–Juli 2025)
Publisher : Green Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/jim.v4i2.961

Abstract

Cold formed steel (CFS) sendiri memiliki dasar pelat yang sangat tipis sehingga cepat untuk mengalami tekuk pada awal deformasi. Mudahnya kondisi CFS megalami kegagalan tekuk, maka peneltian CFS sangat memperhatikan dalam desainnya terhadap sambungan balok ke kolom. Desain sambungan tersebut ditujukan pada komponen sambungan seperti baut dan pelat penyambung seperti rectangular gusset plate, T gusset plate, seat angle, web angle, dan haunched gusset plate. Sambungan ini tidak memerlukan pengelasan dan hanya memerlukan instalasi sederhana. Beberapa tahun belakangan ini pengembangan penelitian terhadap gusset plate sudah semakin dikembangkan terutama tipe haunched gusset plate (HGP). Dalam paper ini akan disajikan metode analisis menggunakan Finite Element Method (FEM) terhadap sambungan HGP dengan tebal pelat 10 mm, baut diameter 12 mm, serta balok dan kolom berukuran C30024. Prangkat lunak yang digunakan untuk membantu dalam menganalisis FEM yaitu ANSYS WORKBENCH. Beberapa metode yang akan dilakukan yaitu menentukan material data, permodelan sambungan, meshing, penentuan kontak analisis, dan melakukan solve analysis. Setelah metode dilakukan maka keluar output berupa nilai defleksi, momen, dan rotasi serta kontru deformasi dan tegangan pada struktur sambungan. Deformasi maksimum yang terjadi yaitu sebesar 29,5 mm. Kesimpulan akhir yaitu perbandingan antara hasil FEM dengan hasil  eksperimen dengan telah dilakukan oleh peneliti sebelumnya.Perbandingan nilai momen rotasi tersebut berkisar 28,89%.
Seismic performance analysis of building structures using high damping rubber bearings Anggara, Veron Bella; Rosidawani, Rosidawani; Hanafiah, Hanafiah; Nurjannah, Siti Aisyah; Setiawan, Andri
Gema Wiralodra Vol. 15 No. 1 (2024): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v15i1.659

Abstract

The problem in this study is how the performance of building structures that have horizontal irregularities using fixed base structures and High Damping Rubber Bearing (HDRB) basic isolated structures. As well as how the performance of building structures compares with horizontal irregularities using HDRB compared to fixed base structures. The purpose of the study was to analyze the effect of the performance of reinforced concrete building structures with horizontal irregularities using fixed base structures and HDRB type basic isolation structures, as well as analyze the comparison of structural performance responses when seismic forces occur on a fixed base and base isolation structures using HDRB in terms of natural periods, shape modes, mass participation, basic shear forces (base shear), story drift, horizontal irregularity, and the influence of the p-delta. This research method is to carry out equivalent static analysis at the initial stage of analysis to obtain minimum force values ​​in the dynamic analysis of the response spectrum in accordance with the provisions of SNI 1726:2019 with the help of Etabs software version V.19. After obtaining the force in the response spectrum analysis results, proceed with designing the structural element reinforcement. Then final stage analysis with non-linear time history analysis (NLTHA) to assess the performance of the building structure. The dynamic analysis of the spectrum response uses spectrum response data for the city of Bengkulu taken from RSA 2021. Meanwhile, the NLTHA analysis uses 7 pairs of horizontal acceleration components selected and matched from individual recordings of MCER ground motion events.The results of this study show that the performance of building structures that have horizontal irregularities with HDRB has better performance than fixed base structures. Comparison of the structure's performance response during seismic forces from several parameters such as natural period, mode shapes, mass participation, base shear, story drift, horizontal irregularity, and p-delta influence. Based on the parameters of the performance of the structure, it proves that the performance of building structures with HDRB has better performance than fixed base. Based on the results of research HDRB can improve the performance of structures that have horizontal irregularities.
Sifat Fisik dan Mekanik Aerated Concrete Dengan Variasi Silica Fume Safitri, Mariana; Rosidawani, Rosidawani; Hanafiah, Hanafiah
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v8i12.14563

Abstract

Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi silica fume terhadap sifat fisik dan mekanik beton aerasi. Beton aerasi merupakan jenis beton ringan dengan pori-pori dan rongga udara tinggi yang dihasilkan melalui penambahan alumunium powder. Silica fume, sebagai pozzolan pengganti semen, diharapkan dapat meningkatkan sifat mekanik beton. Metode eksperimental digunakan untuk membandingkan komposisi aerated concrete dengan variasi silica fume (0%, 10%, dan 15%). Pengujian melibatkan slump flow, setting time, penyerapan air, berat jenis, kuat tekan, dan analisis X-Ray Diffraction (XRD) serta Scanning Electron Microscope (SEM). Hasil menunjukkan bahwa penambahan silica fume mempengaruhi workabilitas, setting time, penyerapan air, dan berat jenis beton. Selain itu, kuat tekan beton meningkat dengan penambahan silica fume, mencapai nilai optimum pada 15%. Analisis XRD menunjukkan komposisi dominan Quartz dan Portlandite, sementara SEM menunjukkan perubahan mikrostruktur dengan variasi silica fume.
Performa Mekanik Engineered Cementitious Composites (ECC) yang Diperkuat Serat Sintetis Makro Dan Mikro Wardan, Muhammad Prawira; Rosidawani, Rosidawani; Hanafiah , Hanafiah
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i6.59577

Abstract

Engineered Cementitious Composites (ECC) merupakan material berbasis semen yang dikembangkan untuk meningkatkan ketahanan retak dan deformasi, dengan karakteristik utama berupa tidak digunakannya agregat kasar serta penguatan menggunakan serat. Penelitian ini bertujuan untuk mengevaluasi pengaruh penambahan serat sintetis mikro dan makro terhadap kuat tekan dan pola keruntuhan ECC. Serat ditambahkan dengan variasi fraksi volume sebesar 0,75%, 1%, dan 1,25%. Pengujian kuat tekan dilakukan pada umur 7, 28, dan 56 hari. Hasil menunjukkan bahwa penambahan serat mikro maupun makro mampu meningkatkan kuat tekan ECC, dengan performa terbaik diperoleh pada variasi serat 0,75%. Pada umur 56 hari, kuat tekan tertinggi tercatat sebesar 33,83 MPa pada ECC dengan serat mikro 0,75%, sementara ECC dengan serat makro 0,75% mencapai 31,75 MPa. Kinerja serat mikro lebih unggul dibandingkan serat makro dalam hal peningkatan kekuatan tekan dan stabilitas keruntuhan. Pola keruntuhan ECC serat mikro tampak lebih halus dan menyebar, sedangkan ECC serat makro menunjukkan retakan yang lebih lebar. Hal ini menunjukkan bahwa dimensi serat mikro yang lebih kecil memberikan kontribusi lebih efektif dalam menjembatani retakan dan menghambat propagasi kerusakan akibat beban tekan. Temuan ini mendukung potensi ECC dengan serat mikro sebagai alternatif material konstruksi yang memiliki kekuatan tekan tinggi dan ketahanan retak yang superior.
Pengaruh Variasi Jarak Tulangan Spiral Terhadap Perilaku Kolom Akibat Beban Aksial Konsentris Menggunakan Finite Element Analysis Lutffeoneta, Aurora; Rosidawani, Rosidawani; Aminuddin, K. M.
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i6.60610

Abstract

Columns are critical structural elements designed to resist axial loads and distribute them to underlying structural components. The use of spiral reinforcement as lateral confinement in cylindrical columns is known to enhance compressive strength and ductility. One of the parameters affecting the performance of spiral reinforcement is the spacing between the turns (pitch), which serves as lateral confinement. This study aims to investigate the effect of varying spiral reinforcement spacing on the stress and strain responses of cylindrical columns subjected to concentric axial loads, using finite element analysis (FEA). The modeling was conducted using Abaqus/CAE software, employing the Concrete Damaged Plasticity (CDP) model. Three different spiral reinforcement spacings were analyzed: 30 mm (K-30), 45 mm (K-45), and 60 mm (K-60). The numerical results include stress and strain responses, ductility, toughness, and failure patterns. The peak compressive strength (fcc) for K-30 was 70.960 MPa, for K-45 was 64.128 MPa, and for K-60 was 60.439 MPa. The toughness values were 1.508 J/mm3 for K-30, 1.796 J/mm3 for K-45, and 1.688 J/mm3 for K-60. The ductility values were 0.403 for K-30, 0.369 for K-45, and 0.394 for K-60. Observations of the failure pattern revealed that both K-30 and K-45 exhibited similar damage distributions, characterized by red-colored stress concentrations that were evenly distributed along the surface of the column cover. In contrast, K-60 showed damage primarily on the cover in the central area of the column.
The Influence of Structure Height and Use of Shear Walls on the Behavior of Reinforced Concrete Building Structures Fauzan Hanif, Muhammad; Rosidawani, Rosidawani; Nurjannah, Siti Aisyah; Hanafiah, Hanafiah
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 6 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i6.1124

Abstract

Bengkulu is one of the areas prone to earthquakes. The application of earthquake-resistant reinforced concrete buildings must be done to minimise lateral forces due to earthquakes. The reinforced concrete structure system commonly used to withstand these lateral forces is a double system using sliding walls. Shear walls are structural elements that can affect rigidity and withstand lateral loads due to earthquakes. In addition, the structure's height will affect the load acting on the structure and the dimensions of the planned structural elements. This study aims to analyse the influence of structural height and the use of sliding walls on the behaviour of reinforced concrete building structures. The analysis in this study used spectrum response method analysis with the help of the ETABS application. Results show that the use of shear walls makes the structure stiffer at lower levels, and the higher the structure will result in the period of the structure, the primary shear force, the deviation between levels, and the influence of P-delta increases.
Co-Authors Adhitya, Bimo Brata Aminuddin, K. M. Aminuddin, Kiagus Muhammad Andri Setiawan Anggara, Veron Bella Costa, Anthony Fauzan Hanif, Muhammad Hanafiah , Hanafiah Hanafiah Hanafiah, Hanafiah Lutffeoneta, Aurora Mariana Safitri, Mariana Qolbi, Muhammad Khofidul Sadila, Yunira Septiadi, Irwandra Siti Aisyah Nurjannah, Siti Aisyah Wardan, Muhammad Prawira