Experimental and analytical analysis of punching shear in flat slabs supported on column topped with concrete head

Grabski, M.W.; Ambroziak, Andrzej

doi:10.1016/j.conbuildmat.2022.129961

Cited by 4 publications

(3 citation statements)

References 43 publications

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“…The proposed direct method was verified based on experimental punching shear tests [47]. The tested members (Fig.…”

Section: Comparison With Experimental Resultsmentioning

confidence: 98%

“…The final result of the resistance calculation is very sensitive to this parameter. Experimental studies [47] have shown that for very large supports, methods that reduce the control circuit (EC2-DIN, MC2010-3d) lead to unreasonable results. The proposed method for direct checking of cutting forces eliminates the problem of determining the length of the control perimeter.…”

Section: Constructional Calculation Examplementioning

confidence: 99%

“…Stress concentrations at corners contribute to a reduction in punching shear resistance. The issue of punching outward of the head, the stiffness of the head is an important parameter affecting the force concentrations at the corners of the support and the resistance of the connection [46,47]. The proposal for a method to verify the punching resistance of very large supports based on the EN 1992-1-1 (EC2) [48] standard is given.…”

Section: Introductionmentioning

confidence: 99%

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Archives of Civil Engineering

Grabski,

Ambroziak

2022

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The proposition of a method to verify the punching resistance for very large supports based on the EN 1992-1-1 standard is described in this paper. The present standard guidelines for the calculation of the punching resistance for large supports are also summarised. The proposed direct method is compared with other standard methods using an example taken from design practice. This method consists of a direct check of the shear forces at specific locations of the control perimeter with the permissible shear force calculated from the EC2 standard. The method showed very good agreement with the experiment while remaining practical for applications. The method presented takes into account the actual distribution of shear forces in the vicinity of the support, taking into account the influence of non-uniform loads, irregular floor geometry, the concentration of internal forces at the corners of the support and the influence of the stiffness of the head used. The paper provides scientists, engineers, and designers new method (called the direct method) for estimation of the punching load-bearing capacity outside the shear cap.

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“…The proposed direct method was verified based on experimental punching shear tests [47]. The tested members (Fig.…”

Section: Comparison With Experimental Resultsmentioning

confidence: 98%

Section: Constructional Calculation Examplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Archives of Civil Engineering

Grabski,

Ambroziak

2022

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Experimental and theoretical research of the punching shear performance of steel‐normal concrete‐UHPC composite slabs

Guo,

Liu

2024

Structural Concrete

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The use of UHPC enables reducing the height of composite slabs, which may decrease the punching shear capacity. This paper investigates the punching shear behavior of steel‐normal concrete‐UHPC composite slabs with experiments and theoretical analyses. Results indicated that a 50 mm UHPC layer makes the nominal punching shear strength increase by 24.91%. Utilizing UHPC and increasing loading area can effectively enhance the punching shear capacity. Besides, theoretical punching shear model proposed based on rigid‐plastic theory can reliably predict the punching shear capacity of composite slabs. The punching shear angle derived from strength theory closely matches the experimental values.

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