Numerical Modelling of Deep Beams with Various Concrete Strength

Abstract:

This paper presents the numerical modeling of a reinforced concrete deep beam (DB) with dimensions of 1100mm, 400mm, and 150mm under two-point loading conditions using the same reinforcement technique. The study evaluates specimens cast from three distinct concrete types: normal-weight concrete (NWC), lightweight concrete (LWC), and high-strength concrete (HSC), while maintaining identical reinforcement configurations. The analysis indicates that the concrete grade significantly influences the ultimate load-bearing capacity of the members. Specifically, the LWC specimens exhibited a 40–41% reduction in capacity compared to the NWC specimens. Conversely, the NWC beams demonstrated a 15–21% lower capacity than the HSC beams. Despite these variations in peak load, all specimens displayed similar failure mechanisms and crack propagation patterns. A comparison between the numerical results and experimental data showed strong correlation, validating the accuracy of the proposed model.

• Periodical: Advances in Science and Technology (Volume 176)
• Pages: 67-74
• DOI: https://doi.org/10.4028/p-gCd6U3
• Online since: May 2026
• Authors: Hussein Kamal*, Ivan Hollý
• Keywords: Abaqus Software, Compression Reinforcement, Concrete, Deep Beam, Failure Modes, Load-Bearing Capacity, Stress Zone

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