Structural behavior of reinforced concrete column having mid-span transverse opening: Experimental study and numerical analysis
This study presents five different strengthening techniques to mitigate the axial load-carrying capacities of reinforced concrete (RC) column having mid-span transverse opening under different loading conditions. These techniques are concrete compressive strength (fc’), column size, rebar size, reba...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Results in Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590048X25000305 |
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| Summary: | This study presents five different strengthening techniques to mitigate the axial load-carrying capacities of reinforced concrete (RC) column having mid-span transverse opening under different loading conditions. These techniques are concrete compressive strength (fc’), column size, rebar size, rebar size and concrete fc', and internally wrapped carbon fiber reinforced polymers (CFRP) strips. Experimental findings revealed that providing mid-span transverse opening (50 mm diameter) in RC columns (cross-section: 200 mm × 200 mm) reduces its axial load-carrying capacity by 20.99 %. However, with increased cross-section (230 mm × 230 mm) and rebar size (4N19), the axial load-carrying capacity of RC column was improved by 18.75 % and 9.38 %, respectively, compared to the RC column having no opening. The eccentric loading conditions showed a direct relationship between the bending moment and eccentricity of the RC column with increased cross-section. However, no obvious decline effect was found on the structural behavior of all RC specimens against cyclic loading. Furthermore, a non-linear finite element model (FEM) was established and showed good agreement with the experimental results under a marginal error of 3.71 %. Lastly, parametric analysis identified that cross-section and rebar size have the major influence on improving the axial load-carrying capacities of RC specimens having mid-span transverse opening under concentric and eccentric loading. |
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| ISSN: | 2590-048X |