Journal of Materials and Engineering Structures
Volume 13, Numéro 3, Pages 433-445
2026-09-30
Investigation Of Bending Response In Hollow Core Beams: Experimental And Analytical Insights
Authors : Nikam Jagruti S. . Pawar Abhijit J. .
Abstract
The idea of using hollow cores in bridges is quite common, but it can be effectively applied to reinforced concrete beams in RCC buildings. The major advantage of use hollow cores is the reduction in the overall self-weight of the beam. This leads to a lower dead load on columns and foundations, which may help to cut down the amount of concrete and steel needed—making the structure more economical. While many researchers have investigated the structural behavior of hollow core beams under flexure, shear, and torsion, but there has not been much focus on beams where the hollow core is typically placed below the neutral layer of beam. The flexural performance of three hollow core beam specimens was examined in this study and compared with that of a conventional solid beam. The hollow cores were passed longitudinally below the neutral layer of those three specimens with 5%, 10% and 15 % core replacement of cross section The flexure test was conducted over simply supported beam specimens using two-point loading. Flexural stiffness, maximum deflections, crack pattern, ultimate load capacity, and deflection variations with load were all thoroughly investigated. To support the test outcomes, nonlinear finite element analysis was also performed on the same specimens. Both experimental and analytical results indicate that hollow core beams demonstrate flexural behaviour in terms of load-carrying capacity, deflection, stiffness, and failure patterns comparable to that of solid beams.
Keywords
hollow core beam ; flexural behavior ; two-point loading ; finite element analysis
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