The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems

Mehdi Öztürk; Emre Ay

doi:10.16984/saufenbilder.1824971

The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems

Abstract

Due to Türkiye’s location in an active seismic zone, the safe design of load-bearing systems in reinforced concrete buildings is essential. Under seismic effects, factors such as plan aspect ratio, slab type, and soil class directly influence the structural behavior, including building stiffness, diaphragm action, and lateral load transfer. In this study, a total of 12 reinforced concrete building models were analyzed using the STA4CAD software in accordance with the Turkish Building Earthquake Code (TBEC-2018), considering three key parameters: slab system (beam-slab and two-way ribbed slab), plan aspect ratio (1 and 4), and soil class (ZB, ZC, ZD). The models were evaluated in terms of natural periods, modal mass participation ratios, base shear forces, inter-story drifts, and second-order effects. Additionally, concrete, formwork, and reinforcement quantities were compared. The results indicated that as the soil class deteriorates, the demand for shear walls increases, which in turn shortens the natural periods by increasing stiffness. It was found that ribbed slab systems exhibit lower lateral stiffness and result in greater displacements and longer periods compared to beam-slab systems. Moreover, buildings with ribbed slabs required approximately 18–22% more reinforcement. Increasing the plan aspect ratio to 4 significantly increased the displacement in the weak direction and the need for shear walls. The findings highlight that slab type, soil class, and plan geometry collectively play a decisive role in seismic performance.

Keywords

References

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Details

Primary Language

English

Subjects

Reinforced Concrete Buildings, Numerical Modelization in Civil Engineering

Journal Section

Research Article

Authors

Mehdi Öztürk ^*
0000-0003-4147-0431
Türkiye

Emre Ay
0009-0005-5408-1146
Türkiye

Early Pub Date

April 22, 2026

Publication Date

April 30, 2026

Submission Date

November 16, 2025

Acceptance Date

January 23, 2026

Published in Issue

Year 2026 Volume: 30 Number: 2

DOI

https://doi.org/10.16984/saufenbilder.1824971

IZ

https://izlik.org/JA75ED97MB

Cite

RIS / Bibtex

APA

Öztürk, M., & Ay, E. (2026). The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems. Sakarya University Journal of Science, 30(2), 232-244. https://doi.org/10.16984/saufenbilder.1824971

AMA

1.Öztürk M, Ay E. The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems. SAUJS. 2026;30(2):232-244. doi:10.16984/saufenbilder.1824971

Chicago

Öztürk, Mehdi, and Emre Ay. 2026. “The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems”. Sakarya University Journal of Science 30 (2): 232-44. https://doi.org/10.16984/saufenbilder.1824971.

EndNote

Öztürk M, Ay E (April 1, 2026) The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems. Sakarya University Journal of Science 30 2 232–244.

IEEE

[1]M. Öztürk and E. Ay, “The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems”, SAUJS, vol. 30, no. 2, pp. 232–244, Apr. 2026, doi: 10.16984/saufenbilder.1824971.

ISNAD

Öztürk, Mehdi - Ay, Emre. “The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems”. Sakarya University Journal of Science 30/2 (April 1, 2026): 232-244. https://doi.org/10.16984/saufenbilder.1824971.

JAMA

1.Öztürk M, Ay E. The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems. SAUJS. 2026;30:232–244.

MLA

Öztürk, Mehdi, and Emre Ay. “The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems”. Sakarya University Journal of Science, vol. 30, no. 2, Apr. 2026, pp. 232-44, doi:10.16984/saufenbilder.1824971.

Vancouver

1.Mehdi Öztürk, Emre Ay. The Effect of Different Slab Types on Seismic Performance in Reinforced Concrete Structures: A Comparison of Beam-Slab and Ribbed Slab Systems. SAUJS. 2026 Apr. 1;30(2):232-44. doi:10.16984/saufenbilder.1824971