DOI: https://doi.org/10.19184/berkalafstpt.v2i3.1275

Keywords: bridge, structure, deflection, stress, tolerance, safety

ABSTRACT

This research analyzes the strength of the upper structure of plate girders BH 1385 KM 347 + 431 between Karanggandul - Purwokerto on the downstream route of Cirebon-Kroya. The analysis includes assessing its capacity to withstand the locomotive series CC 206 load, considering its construction history since 1917 and the planned load in 1911. The bridge's steel profile was measured for technical drawings involving the steel profile's inertia with hole elongation. Working loads were manually analyzed and compared with SAP 2000 application results. The analysis indicates a deflection of 0.717 cm manually and 0.624 cm with SAP 2000, with bending stresses of 0.903 T/cm2 and 0.592 T/cm2, respectively. Both results remain below the allowable deflection limit of 1.35 cm and the stress limit of 1.300 T/cm2, confirming the bridge's current safety. These calculations serve as a reference for the bridge's safety.