Analysis of the Effect of Bridge Height on the Structural Performance of Steel Network-Bound Arch Bridges with Inclination

Daffa Syarif Abdullah (Universitas Negeri Malang, Indonesia)
Mohammad Salman Alfarisi (Universitas Negeri Malang, Indonesia)
Fajar Tamami (Universitas Negeri Malang, Indonesia)
Puput Risdanareni (Universitas Negeri Malang, Indonesia)

G-Tech : Jurnal Teknologi Terapan
Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026

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.