Mitigating Temperature Effects in Curved Continuous Steel Box Girders: A Parametric Thermodynamic Analysis and Design Recommendations

• DOI: 10.20944/preprints202410.2213.v1
• Publication Date: 2024-10-31T01:45:22Z
• Authors: Shichao Wang; Gang Zhang; Haoting Liu; BoXing Zhang; Xu Hou; Zhuoya Yuan
• Keywords: Box girder; Parametric design

Curved continuous steel box girders are extensively utilized in bridge construction due to its efficiency and environmental benefits. However, regions with significant temperature fluctuations, effects can result cumulative deformation stress concentration, which may severely impact structural safety durability. This study examines the response of curved under diverse conditions also develops a comprehensive parameterized thermodynamic numerical model. The model assesses influence cross-sectional shape parameters including; number chambers, diaphragm thickness, height-to-width ratio, as well longitudinal such planar configurations, width-to-span support arrangements, along arrangement stiffening ribs on temperature-induced girders. Results indicate that optimizing width eccentricity stiffeners 30% 25% plate size, respectively, significantly alleviate local stresses. Additionally, variations transverse manifest minimal thermal performance. These findings provide theoretical foundation for improved design practices, offering practical recommendations mitigate enhance longevity structures.