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Punching shear resistance of flat slabs with different types of stirrup anchorages such as shear reinforcement
Graphical abstract Display Omitted
Highlights Use of closed stirrups not attending codes as an admissible alternative for punching shear reinforcement. The use of non-anchored shear reinforcements facilitates the executive process. Closed stirrup shear reinforcement not anchored as a practical alternative. There was no significant influence on the resistance provided by the detailings. Closed stirrup shear reinforcements without adequate anchoring exhibited similar behavior in comparison to properly anchored stirrup.
Abstract Concrete codes demand that the stirrup type shear reinforcements must be adequately anchored in the longitudinal reinforcements. However, this requirement hinders the executive process and makes the use of some reinforcements unfeasible. The goal of the present study was to assess the influence of different types of anchoring of shear reinforcements with closed stirrups on the punching resistance of flat slabs that do not meet the code's standards. An experimental program was conducted assessing nine flat square slabs, a reference slab, and four different types of detailings concerning anchoring. Only one of those details met the normative prescriptions. As a result, it was found that the variation in the anchorage of the stirrups had not influenced the behavior of the slabs. All types of connections had similar punching shear resistance increases.
Punching shear resistance of flat slabs with different types of stirrup anchorages such as shear reinforcement
Graphical abstract Display Omitted
Highlights Use of closed stirrups not attending codes as an admissible alternative for punching shear reinforcement. The use of non-anchored shear reinforcements facilitates the executive process. Closed stirrup shear reinforcement not anchored as a practical alternative. There was no significant influence on the resistance provided by the detailings. Closed stirrup shear reinforcements without adequate anchoring exhibited similar behavior in comparison to properly anchored stirrup.
Abstract Concrete codes demand that the stirrup type shear reinforcements must be adequately anchored in the longitudinal reinforcements. However, this requirement hinders the executive process and makes the use of some reinforcements unfeasible. The goal of the present study was to assess the influence of different types of anchoring of shear reinforcements with closed stirrups on the punching resistance of flat slabs that do not meet the code's standards. An experimental program was conducted assessing nine flat square slabs, a reference slab, and four different types of detailings concerning anchoring. Only one of those details met the normative prescriptions. As a result, it was found that the variation in the anchorage of the stirrups had not influenced the behavior of the slabs. All types of connections had similar punching shear resistance increases.
Punching shear resistance of flat slabs with different types of stirrup anchorages such as shear reinforcement
Hugo Dalosto de Oliveira, Victor (Autor:in) / Jorge Nery de Lima, Henrique (Autor:in) / Sales Melo, Guilherme (Autor:in)
Engineering Structures ; 253
26.11.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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