What question did this study set out to answer?

To explore how circular openings affect the structural behavior of fixed-ended reinforced concrete beams under varying shear span-to-effective depth ratios.

June 17, 2026BuildingsOpen Access

Experimental Investigation of Fixed-Ended RC Beams with Circular Post-Installed Openings Across Different a/d Ratios

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To explore how circular openings affect the structural behavior of fixed-ended reinforced concrete beams under varying shear span-to-effective depth ratios.
Conducted tests on 21 full-scale reinforced concrete beams with varying shear span-to-effective depth ratios (a/d) of 1.25, 1.75, and 2.25.
Introduced circular openings of 100, 200, and 300 mm diameter via core drilling in midspan and shear span regions.
Utilized a four-point bending setup to evaluate structural performance.
Openings in shear spans significantly reduced load-carrying capacity in a/d ratios of 1.25 and 1.75 (specific metrics not provided).
Midspan openings were more impactful in beams with an a/d ratio of 2.25.
300 mm openings caused shear failure in beams typically expected to show flexural behavior.

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Implication

Experimental trial investigates load-carrying capacity in reinforced concrete beams with circular openings, highlighting structural effects based on a/d ratios.

Cite This Study

Arpacıktaş et al. (2026) studied this question.

synapsesocial.com/papers/6a323915d50b63ecad204c6b https://doi.org/10.3390/buildings16122375

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Implication

Experimental trial investigates load-carrying capacity in reinforced concrete beams with circular openings, highlighting structural effects based on a/d ratios.

Experimental Investigation of Fixed-Ended RC Beams with Circular Post-Installed Openings Across Different a/d Ratios

Key Points

Discussion

Implication

Cite This Study

Experimental Investigation of Fixed-Ended RC Beams with Circular Post-Installed Openings Across Different a/d Ratios

Key Points

Discussion

Implication

Cite This Study

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