Evaluating the shear-friction resistance across sliding planes in concrete

Haskett, M.; Oehlers, Deric J.; Ali, M.S. Mohamed; Sharma, Surjit Kumar

doi:10.1016/j.engstruct.2011.01.013

Cited by 70 publications

(42 citation statements)

References 14 publications

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“…Figure 2 shows the peak shear stress (normalised by the compressive strength of concrete) that is able to be transferred across both initially cracked and uncracked sliding planes for a given normal stress (normalised by the compressive strength of concrete). These are the 'Mattock shear stress limits' which, as will be shown later, can be used to determine the bounds to the Walraven properties (Haskett et al, 2009a). It is very difficult to plot bounds on the Walraven properties shown in Figure 1 using Mattock's limits because the Walraven properties plotted in Figure 1 always have an increasing normal confining stress for a constant crack separation (h cr ).…”

Section: Current Shear Friction Approachesmentioning

confidence: 98%

The shear friction aggregate interlock resistance across sliding planes in concrete

Haskett

Oehlers

Ali

et al. 2010

Magazine of Concrete Research

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Shear friction or aggregate interlock behaviour across sliding planes in concrete is a well-established area of research used in numerical modelling and in the understanding of shear failure. Much of the research has been done on initially cracked planes. In this paper, both the shear stress (ô N ) and the crack separation (h cr ) of the shear friction parameters for both initially cracked and uncracked concrete sliding planes are quantified mathematically in terms of the displacement (˜) of the sliding plane, the compressive strength of the concrete (f co ) and the normal stress (ó N ) across the sliding plane. A bound to these generic shear friction parameters (ô N , h cr ,˜and ó N ) for both initially uncracked and cracked concrete is also developed.

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Section: Current Shear Friction Approachesmentioning

confidence: 98%

The shear friction aggregate interlock resistance across sliding planes in concrete

Haskett

Oehlers

Ali

et al. 2010

Magazine of Concrete Research

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“…This may be due to the bridging effect of the steel fibers crossing the concrete cracks. This beneficial effect from steel fibers provides additional shear-frictional resistance to the sliding and allows the transfer of shear forces across the cracked planes [8,32].…”

Section: Groupmentioning

confidence: 99%

“…Thicker steel tube not only has higher shear resistance, but provides higher lateral confinement to concrete. The greater confining pressure across the crack face prompts greater shear transfer capacity and delays failure [32].…”

Section: Axial Load-axial Shortening Curvesmentioning

confidence: 99%

Behavior of steel fiber reinforced concrete-filled steel tube columns under axial compression

et al. 2015

Construction and Building Materials

113

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“…Therefore, the post-peak compression phase can be regarded as a structural behavior where the softening is mainly caused by the coalescence of micro-and meso-cracks into a shear failure crack governed by a coupled phenomenon of shear friction and crack opening [8]. This physical interpretation of the concrete behavior in compression is implemented in the numerical approach developed in the present work.…”

Section: Introductionmentioning

confidence: 98%

A model to simulate the moment–rotation and crack width of FRC members reinforced with longitudinal bars

Barros

Taheri

Salehian

2015

Engineering Structures

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a b s t r a c tThe present work describes a model for the determination of the moment-rotation relationship of a cross section of fiber reinforced concrete (FRC) elements that also include longitudinal bars for the flexural reinforcement (R/FRC). Since a stress-crack width relationship ðr-wÞ is used to model the post-cracking behavior of a FRC, the r-w directly obtained from tensile tests, or derived from inverse analysis applied to the results obtained in three-point notched beam bending tests, can be adopted in this approach. For a more realistic assessment of the crack opening, a bond stress versus slip relationship is assumed to simulate the bond between longitudinal bars and surrounding FRC. To simulate the compression behavior of the FRC, a shear friction model is adopted based on the physical interpretation of the post-peak compression softening behavior registered in experimental tests. By allowing the formation of a compressive FRC wedge delimited by shear band zones, the concept of concrete crushing failure mode in beams failing in bending is reinterpreted. By using the moment-rotation relationship, an algorithm was developed to determine the force-deflection response of statically determinate R/FRC elements. The model is described in detail and its good predictive performance is demonstrated by using available experimental data. Parametric studies were executed to evidence the influence of relevant parameters of the model on the serviceability and ultimate design conditions of R/FRC elements failing in bending.

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Evaluating the shear-friction resistance across sliding planes in concrete

Cited by 70 publications

References 14 publications

The shear friction aggregate interlock resistance across sliding planes in concrete

The shear friction aggregate interlock resistance across sliding planes in concrete

Behavior of steel fiber reinforced concrete-filled steel tube columns under axial compression

A model to simulate the moment–rotation and crack width of FRC members reinforced with longitudinal bars

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