An Experimental Study on the Effects of Biaxial Bending due to Eccentric Load on RC Beam

Abstract:

Eccentric loads are very common in structures due to building configuration. Unequal slab length, circular ramp, large cantilevers are very common in modern architecture. The RC beams in previous studies were tested under the three and four point uniform loads. Therefore, a simple testing setup was arranged to understand the behaviour of RC beam under eccentric load applied at mid span. In this study the single point load applied eccentrically on RC beam. The beams were tested at different eccentricity and compared with control beam tested under the uniform load or zero eccentricity. Results have shown a drastically reduced crack load up to 54% compared to control beam as the eccentricity increased. However, small changed in ultimate load carrying capacity was observed up to 60mm eccentricity. Eccentric load caused biaxial bending due to high concentration of load on one side of beam, which change failure mode of RC beam from ductile to brittle.

• Periodical: Applied Mechanics and Materials (Volume 567)
• Pages: 339-344
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.567.339
• Online since: June 2014
• Authors: Nasir Shafiq*, Muhammad Imran, Ibrisam Akbar
• Keywords: Biaxial Bending, Eccentricity, Flexure, Reinforced Concrete, Torsion

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