Punching of RC slabs under eccentric loads

Farzam, Masood; Fouad, Nariman; Grünberg, Jürgen; Fard, Mikaeil Yousefzadeh

doi:10.1680/stco.2010.11.4.211

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…The same approach has also been adopted in fib Model Code 2010 to account for the contribution of steel fibres to punching shear strength [26]. Further, application to prestressed slabs [27,28], post-installed shear reinforcement [29] or non-axis-symmetric slabs [30,31] can be found elsewhere.…”

Section: Failure Criterionmentioning

confidence: 99%

“…Thus For shear studs or other types of shear reinforcement arranged either radially or in a cruciform shape (see Fig. 9), A sw may be determined from (30) where: n r number of lines of stud, or shear, reinforcement radiating from the column s nominal stud spacing, s = max(s 1 ; s 0 + 0. (31) which is smaller than that available: b 0,out = 0.99 · (4 · 800 + π · 174) = 3708 mm, see Fig.…”

Section: Second Loa: Design For Punching Shearmentioning

confidence: 99%

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Background to fib Model Code 2010 shear provisions – part II: punching shear

Muttoni

Ruiz

Bentz

et al. 2013

Structural Concrete

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Section: Failure Criterionmentioning

confidence: 99%

Section: Second Loa: Design For Punching Shearmentioning

confidence: 99%

Background to fib Model Code 2010 shear provisions – part II: punching shear

Muttoni

Ruiz

Bentz

et al. 2013

Structural Concrete

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“…Also, based on the mechanical model of Broms and Muttoni, an alternative method was proposed by Farzam et al to estimate the ultimate punching shear capacity of slabs under eccentric loading.…”

Section: Existing Mechanical Models and Design Codesmentioning

confidence: 99%

Mechanical model for punching shear capacity of rectangular slab‐column connections

Farzam

Sadaghian

2018

Structural Concrete

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This paper investigates the punching behavior of reinforced concrete flat slabs supported on rectangular columns under concentric loading. Based on the critical shear crack theory, a new model is proposed to determine the punching shear strength of slabs. In this model, a rectangular slab is replaced with an elliptical surface with the same area. The efficiency of the model is validated through comparisons made with experimental studies in the literature. Furthermore, results are compared with three different codes, namely, ACI, Eurocode 2, and FIB Model Code 2010. Finally, an alternative approach is introduced to facilitate the calculation of the punching shear capacity of slabs with column rectangularity considerations. For the experimental tests available in the literature, good shear strength predictions were obtained by the two proposed models.

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Shear behaviour of elongated rectangular wall–footing connections under eccentric loads

Farzam

Sadaghian

Khodadade

2019

Magazine of Concrete Research

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The shear behaviour of reinforced concrete (RC) plates at the junction of interior rectangular walls was experimentally studied. Four tests were conducted on rectangular RC plates that were simply set on edge supports. Walls had different aspect ratios and were located at the centre of the plates. The load was applied with specified eccentricities and was increased monotonically. The failure mode of all plates was brittle punching. Furthermore, the effect of eccentricity of loads on the ultimate punching resistance and rotational capacity of wall–footing connections were numerically studied. The results of the experimental tests and numerical studies were compared with the predictions of American Concrete Institute (ACI) and Eurocode 2 (BS EN 1992-1-1) codes. Results indicate that wall–footing or wall–slab connections having wall aspect ratios greater than 5·0 have a small rotational capacity and are not able to resist the predicted drift values specified by ACI.

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Punching of RC slabs under eccentric loads

Cited by 4 publications

References 3 publications

Background to fib Model Code 2010 shear provisions – part II: punching shear

Background to fib Model Code 2010 shear provisions – part II: punching shear

Mechanical model for punching shear capacity of rectangular slab‐column connections

Shear behaviour of elongated rectangular wall–footing connections under eccentric loads

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