Evaluation of punching strength of RC flat slabs with openings with different positions, size, and number: Experimental, analytical, and superposition approaches

Article Engineering, Civil

Punching behaviour of two-way RC slabs having different multiple opening locations and sizes strengthened with TRM

Omer Mercimek et al.

Summary: This study examined the punching behavior of two-way reinforced concrete slabs with openings and found that the openings have a negative impact on the punching behavior. The use of anchors in the Textile Reinforced Mortar (TRM) strips can reduce the negative effects of openings and increase the punching strength of the slabs.

STRUCTURES (2022)

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Review Engineering, Civil

Punching shear strength of waffle flat slabs with opening adjacent to elongated columns

Amaury Aguiar et al.

Summary: The study found that openings significantly affect the performance of concrete waffle slabs, especially reducing punching shear strength for slabs with smaller columns. The quantity and length of the openings have a relatively minor impact on the slabs. Non-linear finite element analysis accurately predicted failure loads, improving estimates and safety factors in the Brazilian code.

ENGINEERING STRUCTURES (2021)

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Article Construction & Building Technology

Effect of Shape, Number, and Location of Openings on Punching Shear Capacity of Flat Slabs

Ekkachai Yooprasertchai et al.

Summary: The shape and location of openings affect the punching shear capacity of flat slabs, with circular openings having the least impact, openings placed 4 times the slab's thickness from the column's face having minimal effect, and increasing the number of openings substantially reducing the capacity. The predictive accuracy of ACI 318-19 equations was found to be better than that of Eurocode 2.

BUILDINGS (2021)

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Article Construction & Building Technology