Influence of stirrup detailing on punching shear strength of flat slabs

Caldentey, Alejándro Pérez; Lavaselli, Patricio Padilla; Peiretti, Hugo Corres; Fernández, Freddy Aríñez

doi:10.1016/j.engstruct.2012.12.032

Cited by 33 publications

(13 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of shear reinforcement internally anchored on flexural rebars could solve this construction issue, but in terms of research is a subject where little experimental evidence is available. The main results were provided by Yamada et al (1992), Gomes and Andrade (2000), Regan and Samadian (2001), Pilakoutas and Li (2003), Park et al (2007), Trautwein et al (2011) Furche (1997 Caldentey et al (2013) and Furche and Bauermeister (2014) and involve tests on slab-column connections. Results show that in such cases, loss of anchorage can lead to premature failures due to delamination.…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 94%

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Ferreira

Barros

Filho

et al. 2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

This paper presents results of eight experimental tests carried to evaluate the mechanical performance of unconnected "W" stirrups.Reinforced concrete wide beams were tested and their characteristics were idealized to represent column strips in flat slab buildings. The main variables were: the type of shear reinforcement; the shear span to effective depth ratio (av/d); and the flexural (ρl) and shear (ρw) reinforcement ratios. In general, both the response and the shear resistance of the structural elements with unconnected "W" stirrups was similar to those elements with vertical closed stirrups. Increments of shear resistance of up to 84% were achieved, indicating that they have high potential for use as shear reinforcement in slab-column connections.

show abstract

Section: Latin American Journal Of Solids and Structures 13 (2016) 29mentioning

confidence: 94%

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Ferreira

Barros

Filho

et al. 2016

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…Other experimental tests with BD RC slabs have demonstrated that using steel girders in the solid zones between lightweight components (disposed in only one direction of the slab's orthotropy) has increased the punching capacity in 30% regarding the corresponding BD RC slabs without this type of reinforcement. 8 The punching capacity of a RC slab can also be increased by using specific reinforcement, [9][10][11] concrete of higher F I G U R E 2 Geometry of the slab's prototype: (a) SS, (b) SSP, (c) BD, and (d) BDP (dimensions in mm). BD, BubbleDeck slab; SS, solid slab strength class, 12 fiber reinforcement, 12,13 and enlarging the cross section of the supporting vertical elements in order to promote the development of punching failure surfaces of larger area.…”

Section: Introductionmentioning

confidence: 99%

Punching behavior of BubbleDeck type reinforced concrete slabs

Nicácio

Barros

Melo

2019

Structural Concrete

View full text Add to dashboard Cite

The BubbleDeck type slab (BD) is a reinforced concrete (RC) flat slab that includes recycled plastic hollow spheres (RPHS) in its core for decreasing its dead weight. However, punching capacity of BD slabs can be a critical aspect, thereby this work is devoted to assess experimentally its punching behavior. An experimental program composed of four real scale prototypes, representative of RC flat slabs in punching loading conditions, was carried out. Two of these slabs are of BD type, while the other two do not include the RPHS system, herein denominated as RC solid slab (SS). The test results show that all the tested slabs failed in punching after the occurrence of yield initiation of the flexural reinforcement. The punching capacity and the deflection at failure of BD type slab has decreased up to 14% and up to 44%, respectively, when compared to the corresponding SS type slab. A relatively small ductility index was obtained (between 1.51 and 2.65). In BD type slabs, the punching failure surface had tendency to propagate through the RPHS, at an inclination angle of about 45°.

show abstract

“…A mesh sensitivity study indicated a notable influence on the simulated behaviour. Good agreement 0·09 0·91 0·10 0·98 0·11 1·22 0·29 0·94 0·22 209 1·02 0·13 1·00 0·14 1·02 0·15 1·44 0·25 1·08 0·21 a Ghannoum (1998), McHarg (1997 and Kevin (2000) b Guandalini et al (2009), Guidotti (2010, Krueger (1999) and Sagaseta et al (2011) c Heinzmann (2012) and Pralong (1982) d Beutel (2002), Birkle and Digler (2008), Broms (1990), Caldentey et al (2013), Moreno and Sarment (2013), Schaefers (1984), Swamy and Ali (1982) and Wörle (2014) CoV: coefficient of variance between the test and numerical results regarding both stiffness and stress values was found for a mesh size of ≈ 19 mm, resulting in nine layers of mesh for the slab thickness. The arc length method was used as the integration procedure.…”

Section: Validation Modelmentioning

confidence: 99%

“…The method is applicable to the assessment of the punching shear strength of flat slabs connected to interior columns with circular or rectangular cross-sections without shear reinforcement. The method proposed was validated with 209 tests on isolated specimens reported in the literature (suspended slabs and footings) (Al-Yousif and Regan, 2003;Bazant and Cao, 1987;Bernaert and Puech, 1966;Beutel, 2002;Birkle and Digler, 2008;Bompa and Oneţ, 2011;Broms, 1990;Caldentey et al, 2013;Elstner and Hognestad, 1956;Ghannoum, 1998;Guandalini et al, 2009;Gosav et al, 2013;Guidotti, 2010;Hallgren, 1996;Hegger et al, 2009;Heinzmann et al, 2012;Inacio et al, 2013;Kevin, 2000;Kinnunen and Nylander, 1960;Krueger, 1999;Ladner, 1998;Ladner et al, 1977;Marzouk and Hussein, 1991;McHarg, 1997;Menetrey, 2002;Moe, 1961;Mongi, 1990;Moreno, 2013;Muttoni, 2008;Muttoni and Fernandez Ruiz, 2012;Oliveira et al, 2004;Pralong, 1982;Ramadane, 1996;Regan, 1986;Rizk et al, 2011;Sagaseta et al, 2011;Schaefers, 1984;Swamy and Ali, 1982;Tomaszewicz, 1993;Urba...…”

Section: Ultimate Punching Shear Strengthmentioning

confidence: 99%

Punching shear strength of RC flat slabs at interior connections to columns

Bompa

Onet

2016

Magazine of Concrete Research

View full text Add to dashboard Cite

A method to evaluate the punching shear strength of reinforced concrete (RC) flat slabs without shear reinforcement at the connection to interior columns is proposed. The method is based on the assumption that the punching shear strength is controlled by the inclination of a unique punching shear crack that produces a conical failure surface.The inclination angle of the crack is variable. It follows that the location of the critical section is not established in advance, but changes with crack angle. Its location depends on the reinforcement ratio, material strengths and effective depth. According to the proposed method, the punching shear strength is a function of the inclination angle of the governing crack that controls the amount of shear carried by the compression zone and the flexural reinforcement crossing the potential punching cone by accounting for its slenderness and concrete size effect. The method describes the behaviour observed in tests and numerical and analytical investigations. The novel premise that the punching shear strength of flat slabs at connections to interior columns is controlled by the inclination of the failure surface shows remarkable agreement with the results of 209 tests on isolated specimens reported in the literature. This paper also assesses the adequacy of strength predictions obtained using the proposed method and the methods adopted in the codified provisions.

show abstract

Influence of stirrup detailing on punching shear strength of flat slabs

Cited by 33 publications

References 5 publications

One-Way Shear Resistance of RC Members with Unconnected Stirrups

One-Way Shear Resistance of RC Members with Unconnected Stirrups

Punching behavior of BubbleDeck type reinforced concrete slabs

Punching shear strength of RC flat slabs at interior connections to columns

Contact Info

Product

Resources

About