Shear Failure Mechanism in Concrete Beams

Słowik, Marta

doi:10.1016/j.mspro.2014.06.318

Cited by 39 publications

(24 citation statements)

References 9 publications

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“…Considering the VSIM shear design provisions of EC2 24 shear resistance is taken as the lesser of stirrup capacity (2) or web crushing capacity (3) for an assumed strut angle θ in the range 21.8…”

Section: Mf For Ec2 Vsimmentioning

confidence: 99%

“…Some of these parameters include the stirrups and longitudinal reinforcement, concrete strength, beam size, aggregate size, and shear span‐to‐depth ratio . The shear span‐to‐depth ratio ( a / d ) influences the failure mode of reinforced concrete beams . This work considers slender beams ( a / d > 2.5) in shear stirrup failure.…”

Section: Introductionmentioning

confidence: 99%

“…Shear behavior is complex due to the number of parameters and their interactions that affect the mode of shear behaviour. [1][2][3] The shear capacity of reinforced concrete beams is influenced by a large number of parameters, and the difficulty of accurately predicting shear capacity is widely researched. 4 Some of these parameters include the stirrups and longitudinal reinforcement, concrete strength, beam size, aggregate size, and shear span-to-depth ratio.…”

Section: Introductionmentioning

confidence: 99%

“…5 The shear span-to-depth ratio (a/d) influences the failure mode of reinforced concrete beams. 2,6,7 This work considers slender beams (a/d > 2.5) in shear stirrup failure.…”

Section: Introductionmentioning

confidence: 99%

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Model uncertainties and bias in SHEAR strength predictions of slender stirrup reinforced concrete beams

Olalusi

Viljoen

2019

Structural Concrete

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Prior studies point to high model uncertainty in shear prediction. Model factors for various shear prediction models are characterized here, based on a recent and well‐vetted database of shear failures. Characterization includes estimation of main statistical parameters; and importantly also correlation and regression analysis to assess consistency of model factors over ranges of design parameters. The aim of the study is to identify models suitable for use as general probabilistic model (GPM) in future reliability assessments. The Variable Strut Inclination Method (VSIM), shear level of approximation III of the fib Model Code 2010, and ACI 318 displayed high bias, variability and various correlations with shear input parameters which make them unsuitable choices for GPM. The compression chord capacity model and the modified compression field theory displayed low bias and variability with consistent model factors over the ranges of shear design parameters and are thus suitable as GPM. Concerns stem from observed inconsistency in capacity prediction by VSIM and size effect in ACI. Reliability assessment is advised.

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Section: Mf For Ec2 Vsimmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…5 The shear span-to-depth ratio (a/d) influences the failure mode of reinforced concrete beams. 2,6,7 This work considers slender beams (a/d > 2.5) in shear stirrup failure.…”

Section: Introductionmentioning

confidence: 99%

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Model uncertainties and bias in SHEAR strength predictions of slender stirrup reinforced concrete beams

Olalusi

Viljoen

2019

Structural Concrete

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“…One of the clear signs of shear failure in beams is diagonal cracks located near the supports and caused by excess applied shear forces. One-Way shear failure, often referred to as "shear failure", usually occurs in beams [2] and, occasionally, in Walls, slabs, footings and other vertical members. Two-Way shear failure, often referred to as "punching shear failure", tends to occur in horizontal concrete members such as slabs, footings and foundations [3].…”

Section: Fig 1 Shear Failure Propagationmentioning

confidence: 99%

Numerical study for the effect of hairpin shaped shear reinforcement on one-way shear capacity of reinforced concrete beams

2019

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This study investigates the effectiveness of using Hairpin shaped stirrups to increase the shear capacity of beams and slabs. The hairpin system consists of inverted U-shape stirrups welded to flexural corner rebar. Previous research works proved the increase of the hairpin system in increasing the two-way shear capacity compared to conventional punching reinforcement. However, the system’s ability to increase the shear capacity of beams has not been explored. This paper presents the results of Finite Element simulation of two beams performed using ABAQUS Software; one beam is reinforced with conventional shear stirrups, and the other is reinforced with hairpin stirrups. The load capacity, deflection and damage pattern of the two beams were compared. Results showed that beams reinforced with hairpin stirrups have higher load capacity and ductility compared to beams with conventional stirrups. However, the reinforcement type had little effect on the shear damage pattern.

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A Numerical Study on the Shear Strength of RC Beams Provided with Welded Wire Mesh as Core Zone Reinforcement

Manjula¹,

Seshu²,

Rao³

2023

Lecture Notes in Civil Engineering

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Shear Failure Mechanism in Concrete Beams

Cited by 39 publications

References 9 publications

Model uncertainties and bias in SHEAR strength predictions of slender stirrup reinforced concrete beams

Model uncertainties and bias in SHEAR strength predictions of slender stirrup reinforced concrete beams

Numerical study for the effect of hairpin shaped shear reinforcement on one-way shear capacity of reinforced concrete beams

A Numerical Study on the Shear Strength of RC Beams Provided with Welded Wire Mesh as Core Zone Reinforcement

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