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All Journal Jurnal Teknik Sipil dan Teknologi Konstruksi Jurnal Teknik Sipil Macca Jurnal Indonesia Sosial Teknologi
Dualembang, Hery
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PERILAKU SAMBUNGAN BALOK I DAN KOLOM TABUNG BAJA AKIBAT BEBAN SIKLIK Hery Dualembang; Muslikh Muslikh; Andreas Triwiyono
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 7, No 2 (2021): Jurnal Teknik Sipil & Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (756.524 KB) | DOI: 10.35308/jts-utu.v7i2.3926

Abstract

Using Concrete-Filled Steel Tube (CSFT) as a column component provides many advantages over steel columns and reinforced concrete columns. Steel tube serve as reinforcement as well as formwork for concrete filler material. Besides, restrain effect of steel tube prevent crack in the concrete. The concrete-filler on steel tube prevent local buckling and increases the strength and stiffness of the column. The lack of experience and complexity of the beam-column connection system becomes an obstacle to use the CFST as a column. In addition, strength and stiffness of the connection system on CFST should be sufficient to endure the earthquake loads. This research purpose to find alternate connection of CFST column beams and also to know hysterestis behavior, strength, stiffness and pattern of connection collapse due to cyclic loading. There are two specimens in this research, continuous joint of beam-column steel tube with concrete filler (BKM-T) and continuous joint of beam-column steel tube without concrete filler (BKM-K).  BKM-K as a comparator to show an increasing strength and stiffness due to the concrete core. Load cycle of specimens refer to ACI 374.1-05. The test results showed the average maximum load (Ppeak) of 32.59 kN on BKM-K increased to 34.08 kN on BKM-T. Elastic stiffness (Ke) at BKM-K of 0.78 kN/mm increased to 1.08 kN/mm on BKM-T. BKM-T also has a larger hysteretic loop than BKM-K. In addition, BKM-K and BKM-T adequate the strong column weak beam criteria with partial ductility.
Analisa Erosi dan Sedimentasi Di Hilir Kali Acai Guna Mencegah Daya Rusak Air Deliana Mangisu; Hery Dualembang
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 9, No 1 (2023): Jurnal Teknik Sipil dan Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v9i1.7093

Abstract

The characteristics of the watershed (DAS) have an influence on the size of the discharge, erosion, and sediment in a watershed. Erosion is the process of wearing away topsoil by water or wind. The rate of erosion and sedimentation that occurs is often caused and influenced by climate, soil, topography, plants, land use, human activities, river hydraulic characteristics, and cross-sectional characteristics. The purpose of this study is to obtain information on the magnitude of erosion and sedimentation per unit area in the Acai River. The methods used for this research activity are primary and secondary data analysis methods, using the tools of the ArcGis, and Hecras programs and manual observations and measurements in the laboratory to obtain sedimentation values and shear stresses. The results obtained based on the observations and analysis carried out, the erosion rate using the USLE method was 110.90 tons/ha/year, the peak flood discharge was 18.64 m3/s (Q10) which could not be accommodated by the Acai River and the amount of sedimentation per unit area in the study location for the downstream area is 84,564,439 tons/ha
Determination of The Position and Depth of Aquifers in The Kobakma District of Central Mamberamo District Duha Awaluddin Kurniatullah; Hery Dualembang; Wika Matana Nion; Helen Gianditha Wayangkau; Rahmat Tatayo Lie
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 12 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i12.1367

Abstract

Groundwater availability in aquifers is crucial for sustaining human settlements, particularly in Kobakma District, Central Mamberamo Regency, where clean water distribution faces significant challenges due to seasonal fluctuations and infrastructure limitations. The lack of groundwater utilization has resulted in local communities relying on rainwater as their primary water source, highlighting the necessity to identify potential groundwater sources. This research aims to determine the position and depth of aquifers in Kobakma District using the geoelectric resistivity method. By identifying subsurface conditions and geological formations, the study seeks to map groundwater availability and provide recommendations for sustainable water resource management in the region. The study employs the geoelectric resistivity method using the Schlumberger configuration to measure subsurface resistivity. Data collection was conducted across 13 test points within Kobakma District. The collected resistivity values were analyzed to interpret subsurface lithology and identify potential aquifer zones. The study primarily focuses on detecting free and confined aquifers, considering variations in rock formations, permeability, and groundwater flow dynamics. The results indicate the presence of two primary aquifer layers: a free aquifer distributed across various locations at depths ranging from 10–60 meters and a confined aquifer found at depths between 100–300 meters. Some test points showed aquifer leakage due to fault structures, influencing groundwater movement. The findings suggest that groundwater sources in the study area are unevenly distributed, requiring site-specific extraction strategies. The study provides an aquifer depth distribution map, offering critical insights for future groundwater management and well-drillin.
EVALUASI KINERJA DAN RENCANA PERKUATAN RANGKA ATAP GEDUNG GEREJA KATEDRAL JAYAPURA PASCA GEMPA JAYAPURA 2023 Dualembang, Hery; Paseru, Riswandy Loly
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 11, No 1 (2025): JURNAL TEKNIK SIPIL DAN TEKNOLOGI KONSTRUKSI
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v11i1.12141

Abstract

The majority of areas in Indonesia, such as the city of Jayapura, are categorized within zones of moderate to high seismic intensity. On February 9, 2023, a 5.4 magnitude earthquake hit Jayapura, resulting in damage to various structures, including the Cathedral Church. Assessments conducted after the earthquake revealed structural issues, including cracks in walls and significant deflection in the roof truss system. From the structural assessment of the current roof, it was determined that eleven truss elements had failed, and every rafter showed deflection surpassing the permissible limit of L/240. The reinforcement involved steel elements and created a Cremona truss framework with WF 250.125.6.9 and UNP 75.40.5 profiles. Connections were established with chemical anchors and endplates between the steel profiles and 30×50 cm concrete beams, along with welded joints linking the steel elements. Evaluation results indicated that the enhanced structure achieved a secure performance level and complied with applicable, especially SNI 1729:2020 for structural steel design. This situation emphasizes the significance of evaluating buildings after an earthquake and implementing specific reinforcement strategies to regain structural stability and safety.Keywords— steel, performance evaluation, earthquake, reinforcement.
Analisis Erosi Menggunakan Sistem Informasi Geografis pada Daerah Aliran Sungai (DAS)Kamp Wolker Waena - Jayapura Widyastuti, Ira; Dualembang, Hery; Paseru, Riswandy Loly; Sanggamele, Herlina; Kombong , Eka Priska
Jurnal Teknik Sipil MACCA Vol. 10 No. 1 (2025): Jurnal Teknik Sipil MACCA (FEBRUARI 2025)
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/0e64gz27

Abstract

Erosi merupakan proses pelepasan dan pemindahan partikel tanah dari satu tempat ke tempat lain, yang umumnya disebabkan oleh aktivitas air hujan maupun angin. Dalam konteks Daerah Aliran Sungai (DAS), proses ini menyebabkan terjadinya akumulasi sedimen di saluran sungai yang berakibat pada penurunan kapasitas tampung aliran air. DAS Kamp Wolker menjadi wilayah yang strategis dalam aktivitas eksploitasi dan ekstraksi material karena keberadaan endapan sedimen serta batuan yang melimpah di sepanjang aliran sungai. Terbentuknya endapan tersebut erat kaitannya dengan proses erosi yang terus berlangsung di kawasan tersebut. Penelitian ini bertujuan untuk mengidentifikasi nilai laju erosi serta melakukan klasifikasi tingkat erosi di DAS Kamp Wolker dengan menggunakan pendekatan Universal Soil Loss Equation (USLE) yang diintegrasikan dengan analisis Sistem Informasi Geografis (SIG). Metode USLE melibatkan lima parameter utama, yaitu faktor erosivitas curah hujan (R), erodibilitas tanah (K), panjang dan kemiringan lereng (LS), pengelolaan tanaman (C), serta tindakan konservasi tanah (P). Melalui teknik overlay spasial, nilai erosi dihitung dan diklasifikasikan ke dalam lima kategori tingkat bahaya erosi, yaitu sangat ringan, ringan, sedang, berat, dan sangat berat. Hasil analisis menunjukkan bahwa rata-rata laju erosi di DAS Kamp Wolker mencapai 2,989 ton/ha/tahun. Distribusi kelas erosi di wilayah tersebut meliputi: sangat ringan (75,18%), ringan (10,96%), sedang (7,86%), berat (4,72%), dan sangat berat (1,32%). Temuan ini memberikan gambaran yang jelas mengenai kondisi kerentanan lahan terhadap erosi, yang dapat menjadi dasar dalam penyusunan strategi konservasi tanah dan pengelolaan DAS yang berkelanjutan.
Co-Authors Andreas Triwiyono Deliana Mangisu Duha Awaluddin Kurniatullah Eka Priska Kombong Muslikh Muslikh Rahmat Tatayo Lie Riswandy Loly Paseru Sanggamele, Herlina Wayangkau, Helen Giandita widyastuti, ira Wika Matana Nion