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All Journal G-Tech : Jurnal Teknologi Terapan
Fajar Tamami
Universitas Negeri Malang, Indonesia
Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering

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Effect of Spacing Configuration and Number of Hangers on Structural Performance of Tied-Arch Bridges Mohammad Salman Alfarisi; Fajar Tamami; Daffa Syarif Abdullah; Puput Risdanareni
G-Tech: Jurnal Teknologi Terapan Vol 9 No 1 (2025): G-Tech, Vol. 9 No. 1 January 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i1.6165

Abstract

Optimized tied arch bridges offer efficient material usage in the structure. This research studied the effects of varying the spacing and number of hangers. The use of symmetrical spacing variations (X), decreased towards the middle of the span (Y), and decreased towards the end of the bridge (Z), combined with different numbers of hangers, namely 8, 10, and 12 pieces, these variations produced 9 bridge models. The objective was to find the best structural performance that minimized structural weight and deflection, thereby reducing steel usage and CO2 emissions. This study used SAP2000 v.25 for 3D model analysis, with a 250 Kg load in the middle of the span using the tributary method, which distributes the load to the longitudinal bars and transverse bars, representing the load of several pedestrians in the middle of the bridge channeled by the floor plate to the bars below. The results showed that the spacing type and number of hangers affect the structural performance. The Z spacing type produced the lowest average structural weight, while the 10 hangers gave the smallest average deflection compared to the other hangers. In conclusion, optimization was successful by combining the z-type spacing with 10 hangers.
Analysis of the Effect of Bridge Height on the Structural Performance of Steel Network-Bound Arch Bridges with Inclination Daffa Syarif Abdullah; Mohammad Salman Alfarisi; Fajar Tamami; Puput Risdanareni
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8823

Abstract

Indonesia, with its vast geographical characteristics, requires efficient and sustainable long-span bridges to improve regional connectivity. This study aims to determine the optimal arch height for steel-bound arch bridges with cable network configurations and inward slopes based on structural performance. The analysis was conducted using the finite element method through SAP2000 v.25 on a 150 m span bridge with a cable angle of 74° and variations in arch height of 23 m, 24 m, and 25 m. Structural performance was evaluated based on maximum deflection and normalized structural weight on a scale of 0–1. The results show that increasing the arch height reduces the deflection from 148.55 mm to 131.41 mm with a relatively small increase in weight, which is around 0.5%. The 25 m arch height produces the best performance and is recommended as the optimal configuration for an efficient and sustainable tied arch bridge design.
Co-Authors Daffa Syarif Abdullah Mohammad Salman Alfarisi Puput Risdanareni