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All Journal Journal of Research and Inovation in Civil Engineering as Applied Science Journal of Science and Education Research Sainstech Nusantara
Wahyudi Efendi, Aco
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences

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Structural Performance and Stress Contour Analysis of Multi Utility Tunnels Using LISA V.8 Finite Element Analysis Wahyudi Efendi, Aco
Journal of Research and Inovation in Civil Engineering as Applied Science (RIGID) Vol 3 No 2 (2024)
Publisher : Teknik Sipil, Politeknik Negeri Ketapangg

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/rigid.v3i2.1589

Abstract

The growing complexity of urban infrastructure necessitates efficient management of utilities like electricity, water, and telecommunications. Multi Utility Tunnels (MUTs) provide a consolidated approach to housing these utilities, reducing surface disruption and enhancing maintenance efficiency. This study assesses the structural performance and stress distribution within MUTs using Finite Element Analysis (FEA) through LISA FEA V.8 software. The analysis involved detailed geometric modeling of the MUT, considering initial conditions and potential subsidence. Material properties for steel, concrete, wood, backfill soil, and the top surface layer were defined, focusing on their Young's modulus, density, and Poisson's ratio. The MUT was subjected to a uniform line pressure of 86.49 kN/m, representing vehicular traffic and pedestrian loads. Results showed that the applied stresses and observed deflections were within safe limits, with a tensile strength of 3.4 MPa and current stress at 3046 kN/m², indicating no risk of cracking. The observed deflection of 3.9 mm was significantly below the allowable limit of 10 mm, affirming structural stability. The reinforcing steel also exhibited stress levels well within its allowable limit, demonstrating the design's adequacy and ensuring the structure's safety and efficiency under the specified load conditions
Analysis of Strengthening of Soil Subsidence on Land in Tanjung Priok Wahyudi Efendi, Aco
Journal of Science and Education Research Vol. 1 No. 1 (2022): Journal of Science and Education Research
Publisher : Yayasan Pendidikan Insan Mulia Utan Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62759/jser.v1i1.5

Abstract

Land subsidence is land subsidence in a vertical direction with respect to a specific elevation reference surface, such as B. Mean Sea Level (MSL) or a reference ellipsoid area. Subsidence is a natural phenomenon that often occurs in built-up areas, such as large cities that sit on top of a layer of sediment. This analysis assesses the stability and integrity of the building and obtains parameters in unstable areas and it is hoped that data will be available that can represent the soil conditions and their relevance to development. Also information about the effects of changes in the field due to development, such as e.g. B. Ground stability, and awareness of the possibility of excessive ground subsidence which may adversely affect the structure of the building above. The results of the decrease from tests on geoelectric trajectories with loading according to the construction conditions gave a decrease value of 6.78-7.8 cm, with the largest stress analysis on the ground 1000-1200 kN/m2 in the deepest soil layer at an altitude of 1000- 1200kN/m2 is -20-25m. Chemichal (epoxy resin) reinforcement method can inhibit the subsidence rate by 0.20 meters against the subsidence analysis results of 0.24 meters. The reinforcement method using compaction grouting can inhibit the subsidence rate by 0.21 meters versus the subsidence analysis results of 0.24 meters.
Behavior of precast concrete beam and slab elements under service conditions using LISA FEA Wahyudi Efendi, Aco
SAINSTECH NUSANTARA Vol. 1 No. 4 (2024): November 2024
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v1i4.63

Abstract

Development has increased massively after the announcement of the IKN area in the area, one of which is the construction of a jetty to accommodate logistics for construction work from infrastructure and facilities to support road, bridge and building construction activities in the IKN area. In this research, we explore how to construct the IKN dock in a timely manner so that it may be utilized appropriately. Researchers perform an examination of the behavior of precast beams and jetty floor slab to acquire stress values and deformations that occur in the process of working methods when installed, casting implementation, and dock service circumstances when using this precast technique. The usage of precast is analyzed utilizing micro software analysis of the finite element technique, namely LISA FEA V.8, to create stress hues behavior that happens. From the results of the modeling simulation above, it can be seen that the largest dominant stress distribution occurs on the side of the beam ear meeting with the deck slab/half slab, the stress occurs according to the working method step between 1.774 MPa in the condition of the slab being installed and increases when the implementation of wet concrete casting becomes 2.567 MPa and when the service condition, the stress again increases to 9,258 MPa.
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