Plastic analysis and twist capacity of high-strength concrete hollow beams under pure torsion

Bernardo, Luís; Lopes, Sérgio M.R.

doi:10.1016/j.engstruct.2012.10.030

Cited by 24 publications

(11 citation statements)

References 12 publications

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“…The above-mentioned studies focused on the torsional characteristics of normal weight concrete (NWC), high strength concrete and high performance concrete; however, the investigation of the torsional strength of lightweight concrete (LWC) is limited. This is because the conventional torsional design from the ACI code is based on the skew bending theory [4], and then further theories including the Thin Tube theory, Variable Angle Truss Model and Softened Membrane Model were developed for the prediction of the torsional behaviour of concrete [2,4,11,12]. However, there are no studies available on the torsional behaviour of LWC.…”

Section: Introductionmentioning

confidence: 99%

“…The torsion force normally occurs by combining with the flexure and shear forces. In structures with the combined forces, the design procedures are normally based on the force interactions, and, hence, the behaviours of the members under pure torsion need to be known and quantified [2]. There have been numerous studies concerning the torsional resistance of concrete in recent years [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of fibre aspect ratio on the torsional behaviour of steel fibre-reinforced normal weight concrete and lightweight concrete

Yap¹,

Khaw²,

Alengaram³

et al. 2015

Engineering Structures

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of fibre aspect ratio on the torsional behaviour of steel fibre-reinforced normal weight concrete and lightweight concrete

Yap¹,

Khaw²,

Alengaram³

et al. 2015

Engineering Structures

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“…is means controlling the crack width and securing enough ductility to prevent sudden loss of the torsional strength after cracking. Numerous researchers, however, already pointed out the issues resulting from the behavioral change brought by the increase of the strength or related to the minimum torsional reinforcement ratio recommended by ACI 318-14 Code or Eurocode 2 (EC 2) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Rahal and Collins [8,9] successfully applied the modified compression field theory to estimate the torsional behavior of concrete beams, and Chalioris [10] combined the smeared crack model and the softened truss model to predict the initial torsional stiffness, torsional cracking moment, and strength of concrete beams. Bernardo and Lopes [11] proposed a parameter for the plastic behavior and twist capacity of high-strength concrete hollow beams based on the analysis of their test.…”

Section: Introductionmentioning

confidence: 99%

Torsional Behavior of High-Strength Concrete Beams with Minimum Reinforcement Ratio

Joh

Kwahk

Lee

et al. 2019

Advances in Civil Engineering

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Although there is a growing trend to use higher strength for concrete and steel in reinforced concrete structures due to the lightness and slenderness of these members together with the simplified arrangement of their reinforcement, there is still the necessity to inspect the reduction of ductility resulting from the gain in strength. Taking into account that this also concerns the design for torsion, this study intends to investigate the regulations related to the torsional minimum reinforcement ratio in view of the minimum ductility requirement with focus on Eurocode 2. To that goal, the relation between the torsional cracking moment and the ductile behavior is discussed for the beam reinforced with the minimum torsional reinforcement ratio to examine the eventual properness of the minimum torsional reinforcement ratio recommended by Eurocode 2. Moreover, a pure torsion test is performed on 18 beams made of 80 MPa concrete reinforced by high-strength bars with rectangular section and various test variables involving the minimum torsional reinforcement ratio, the transverse-to-longitudinal reinforcement ratio, and the total reinforcement ratio. As a result, for the high-strength concrete beams, the minimum torsional reinforcement ratio recommended by Eurocode 2 was insufficient to prevent the sudden loss of strength after the initiation of the torsional cracking. But with regard to the compatibility torsion of statically indeterminate structure, the adoption of the minimum torsional reinforcement ratio recommended by Eurocode 2 might secure enough deformability under displacement-controlled mode to allow the redistribution of the torsional moment.

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“…High Performance Concrete (HPC) is a unique type of concrete which is used to construct complex structures. It is recently used in the construction of new structures, because of its vast advantages [1]. Compared to normal concrete, the production cost of HSC is high.…”

Section: Introductionmentioning

confidence: 99%

Hollow Beams Strengthened with Steel Fibres and FRP Wrapping

Jeyakumar.¹,

M.S²,

N³

2019

IJRTE

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In the field of construction hollow sections have found wide application due to its advantageous properties. Many research works have been conducted to study the flexural and tensional behaviour of hollow reinforced concrete beams. But its behaviour using High-Performance Concrete (HPC) has been poorly noticed. In this study an attempt made to evaluate Hollow reinforced beams made with HPC and reinforced with hybrid steel fibres. The flexural behaviour of hollow beams based on the effect of Carbon fibre reinforced polymer (CFRP) has also been explored. A comparison is made between the results obtained from analysis using ANSYS software with the experimental test result. It is noticeable that the flexural strength, its ductility, and stiffness is not affected but the self-weight of the structure is reduced due to hollow beams.

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Plastic analysis and twist capacity of high-strength concrete hollow beams under pure torsion

Cited by 24 publications

References 12 publications

Effect of fibre aspect ratio on the torsional behaviour of steel fibre-reinforced normal weight concrete and lightweight concrete

Effect of fibre aspect ratio on the torsional behaviour of steel fibre-reinforced normal weight concrete and lightweight concrete

Torsional Behavior of High-Strength Concrete Beams with Minimum Reinforcement Ratio

Hollow Beams Strengthened with Steel Fibres and FRP Wrapping

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