STRUCTURAL DESIGN CONSIDERATIONS FOR A THREE-SPAN BEAM-COLUMN RC STRUCTURE WITH A SIGNIFICANTLY LONGER MIDDLE SPAN

Ogonna Samuel Nwokoye, David C. Okeke

Abstract


Designing a reinforced concrete (RC) beam-column structure with three spans, where the middle span is at least three times longer than the adjacent spans, poses significant engineering challenges. This structural configuration leads to non-uniform load distribution, increased bending moments, shear forces, and deflections, particularly in the longer middle span. This paper explores the typical structural design considerations for such a configuration, focusing on load distribution, reinforcement detailing, deflection control, potential issues related to differential settlement, and the impacts of dynamic loading. By adhering to Eurocode standards and employing advanced structural analysis tools, this study provides insights and recommendations for ensuring the safety, serviceability, and durability of three-span beam-column RC structures with unequal spans.

Keywords: Three-Span, beam-column, Structure


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References


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