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All Journal IPTEK The Journal of Engineering Jurnal Penelitian Rumpun Ilmu Teknik Jurnal Kolaborasi Sains dan Ilmu Terapan
Nur Ahmad Husin
Unknown Affiliation
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Mechanical Engineering

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Manajemen dan Pengawasan Proyek Rekonstruksi Jalan Geneng – Maron Titan Adya Safara; Nur Ahmad Husin; Yudhi Arnandha; Budi Suswanto; Tatas Tatas
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 4 No. 1 (2025): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v4i1.4767

Abstract

Construction work or construction projects are a collection of complex tasks interconnected with each other. In its implementation, these construction projects must be adjusted to the plans that have been made, both in terms of volume, quality, cost, and time. The execution of these projects requires management and supervision by a supervisory team, which acts as a consultancy service provider to assist the Public Works and Spatial Planning Agency of Temanggung Regency. This project is the Reconstruction Package of the Geneng – Maron Road Section located in Temanggung Regency. Temanggung Regency is a regency located in Central Java Province which serves as one of the connectors between the Capital of Central Java Province and other cities or regencies. Road maintenance is carried out periodically as one of the efforts to maintain district roads. Routine road maintenance is carried out once a year, but for the improvement of the Geneng – Maron road section, it is carried out after the last improvement in 2016. Based on the Minister of Public Works Regulation No. 13/PRT/M/2011 regarding Procedures for Road Maintenance and Road Inspection, there is a table determining the road maintenance program for asphalt/concrete-covered roads, indicating that roads in severe disrepair should undergo reconstruction or improvement. The Geneng – Maron road itself is a district road frequently traversed by various classes of vehicles. However, the Geneng – Maron Road should have its status changed due to frequent passage by heavy-duty vehicles, causing it to deteriorate more rapidly due to its design and function being inadequate. Therefore, routine maintenance cannot be applied this year because the damage is already severe enough to require road reconstruction.
Tensile Performance of Inter-Module Connections for Modular Steel Buildings Using Finite Element Method Umi Arifatus Shoifah; Nur Ahmad Husin; Yuyun Tajunnisa
IPTEK The Journal of Engineering Vol. 11 No. 3 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v11i3.a23072

Abstract

Steel modular construction is an innovative technology that uses prefabricated volumetric module unitsmanufactured in a factory and assembled on site via inter-module connections. However, this system's applicationin high-rise buildings is limited because the structural performance is strongly influenced by the inter-moduleconnection mechanism. This technology uses a translational spring model to transfer loads between modules throughinter-module connections. This approach uses threaded steel rod components, connection plates, shear keys, shearplates, and tie plates. This research aims to determine the maximum tensile capacity of the connection. It also aimsto study stress distribution due to tensile forces and failure modes in vertical modular connections. This researchuses the finite element method (FEM) to perform numerical analysis by applying monotonic loads. Simulation resultsindicate that the connection's maximum tensile capacity is 307.48 kN, distributed among two rods with capacities of153.74 kN each at a displacement of 23.2 mm. The rod undergoes elastic deformation up to Fy = 900 MPa, followedby a plastic phase up to nearly Fu = 1,100 MPa, causing permanent strain and necking. Tensile failure occurred dueto plasticity and necking conditions.
Performance Based Structural Analysis of a Bulk Carrier Pier Using Soil Structure Interaction Modeling Irwansyah; Mohammad Sigit Darmawan; Nur Ahmad Husin; Kohar Yudoprasetyo
Jurnal Kolaborasi Sains dan Ilmu Terapan Vol. 5 No. 1.1 (2026): SPECIAL ISSUE
Publisher : Utiliti Project Solution

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Abstract

Accurate representation of pile-soil interaction is essential for performance-based assessment of pile-supported wharves because lateral resistance, effective fixity, and plastic-hinge development depend strongly on surrounding soil conditions. This study compares a conventional virtual-fixity-point (VFP) idealization with a calibrated soil-structure interaction (SSI) model for a bulk carrier wharf in Gresik, Indonesia. Three models were evaluated: the existing wharf with VFP supports, the same structure with distributed SSI springs, and an optimized SSI model with reduced steel-pipe-pile diameters. The 20 m-wide platform was modeled in SAP2000 under operational, berthing, mooring, environmental, and seismic loads. Lateral springs were derived from LPILE p-y analyses, assigned at 1 m depth intervals, and validated using pile-deflection profiles under a 100 kN lateral load. Linear analysis evaluated demand-capacity ratios and serviceability displacements, while nonlinear pushover analysis used fiber hinges and strain-based criteria. Relative to the VFP model, the SSI model reduced earthquake DCR from 0.648 to 0.548 and seismic displacement from 76.92 to 43.17 mm, while increasing performance-point base shear by 27%. The optimized model reached a DCR of 0.770, and maximum pile strains remained within 19.2–21.0% of the Minimal Damage limit, confirming safer and more efficient structural optimization for comparable pile-supported marine infrastructure in seismic regions
Co-Authors Budi Suswanto IRWANSYAH Kohar Yudoprasetyo Mohammad Sigit Darmawan Tatas Tatas Titan Adya Safara Umi Arifatus Shoifah Yudhi Arnandha Yuyun Tajunnisa