Abstract
Flat slab systems are popular because of their adaptability. Connecting to public services like gas or deflation may require openings. Most designers cannot choose where these openings should be relative to the supporting column. Openings and flat slabs, especially those with edge columns, create a concrete-reinforcing steel discontinuity that punches. Concrete slab capacity depends on its cross-section’s punching shear resistance. A 1500 × 1000 × 120 mm specimen was studied in an experiment. This specimen has no openings or shear studs. The specimen’s maximum load, deflection, energy absorption, and stiffness were determined experimentally, using ANSYS V.21 to compare the experimental results with numerical results, and also using ANSYS V.21 to study many finite element models on larger slab dimensions 3000 × 3000 × 150 mm. The shear stud scheme in a flat slab with openings, the opening size relative to the column face and column corner, the opening locations close to them, the ideal number of studs in one row, the ideal distance between rows, the ideal arrangements of shear studs, and the number of rows were studied. The experimental and numerical findings were compared using ANSYS V.21. Experimental and ANSYS V.21 results were close. ANSYS V.21 demonstrated that flat slab openings at the column corner had better ultimate load capacity than those at the column face, while increasing opening dimensions beyond the column dimension decreased punching shear capacity. In addition, the best location for shear studs in a box layout is three of them spaced at a distance of ts mm. Also, the shear resistance rises with increasing row numbers.
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A.Hanaa G. Mohammed: Participated in the experimental work, Participated in methodology; validated the results; wrote the discussion; prepared figures. B. Alaa Y. Abouelezz: Participated in the experimental work, analyzed solutions; organized data; Theorized the work; inscribed the original draft preparation; participated in methodology; coordinated and revised the manuscript; validated the results C. Naglaa G. Fahmy: Participated in the experimental work, Analyzed solutions; organized data; Theorized the work; inscribed the original draft preparation; participated in methodology; coordinated and revised the manuscript; validated the results D.L.M. Abd el-Hafez: Participated in the experimental work, analyzed solutions; organized data; Theorized the work; inscribed the original draft preparation; participated in methodology; coordinated and revised the manuscript; validated the results
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Mohammed, H.G., Elezz, A.E.Y.A., Fahmy, N.G. et al. Studying the effects of shear studs on the punching shear resistance of thin flat slabs with edge column connections and openings. Asian J Civ Eng 25, 2823–2841 (2024). https://doi.org/10.1007/s42107-023-00948-z
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DOI: https://doi.org/10.1007/s42107-023-00948-z