torsional capacity investigation of reinforced concrete

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Torsional capacity investigation of reinforced concrete ...

Torsional capacity investigation of reinforced concrete beams with different configurations of welded and unwelded transverse reinforcement. Nasim Shatarat. ... 150, and 100 mm were used. The experimental torsional capacity results are compared with the theoretical values determined by the ACI 318–14 code, Eurocode‐2, ...

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Investigation of torsional behavior and capacity of ...

Jan 01, 2019  Four rectangular solid beams of under-reinforced ultra-high performance fiber reinforced concrete were prepared for testing under pure equilibrium torsion. The results of this study revealed that both peak torsional capacity and that at crack loads were increased up to 113% and 134% of the estimated value based on thin walled tube theory ...

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Torsional Capacity of CFRP Strengthened Reinforced ...

Feb 01, 2007  Furthermore, available design tools are sparse and unproven. This paper briefly recounts the experimental work in an overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally bonded carbon fiber-reinforced polymer (CFRP).

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(PDF) Torsional Strengthening of Reinforced Concrete Beams ...

"Improving torsional behaviour of reinforced concrete beams strengthened with carbon fibre reinforced polymer composite." (2009): 315-327. [26] Mohammadizadeh, M.R., Fadaee, M.J., “Experimental investigation on torsional strengthening of high-strength concrete beams using CFRP sheets.” Kuwait J Scien Eng, (2009). 36.

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Torsional Capacity of CFRP Strengthened Reinforced ...

An experimental investigation is conducted to address the torsional capacity and twist of reinforced concrete beams with reinforcement only on transverse direction and strengthened with ...

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Torsional behavior of solid and hollow concrete beams ...

Oct 24, 2020  Enhancing the torsional capacity of reinforced concrete (RC) beams while maintaining reasonably economic and efficient cross-sections poses a practical challenge in the design of such elements. Thus, developing and testing economically viable reinforcing techniques for enhancing the torsional capacity of RC beams is a significant aspect.

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Investigation of Torsion behavior of high strength short ...

This study aims is to investigating the structural capacity of fibbers reinforced deep beams with opening under pure torsion. The deep beams were made of high strength concrete. The openings were made in the web with different shapes (circular and square), sizes and located at the mid span. Seventeen deep beam specimens were casted and they experimentally investigated throughout this study.

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Torsional Moment Capacity and Failure Mode Mechanisms of ...

Apr 02, 2015  This paper presents the results of an investigation of the torsional strength and behavior of full-scale concrete beams reinforced with carbon-FRP (CFRP) bars and stirrups. The beams measured 4,000 mm long, 250 mm wide, and 600 mm deep and were tested under pure torsion loading.

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(PDF) Influence of Maximum Aggregate Size on Behavior of ...

investigations reveal that M 30 ... when the beam reaches its maximum capacity ... A simple experiment for the evaluation of the torsional strength of reinforced concrete beams as a one of this ...

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Reinforced Concrete T-Beams in Torsion and Bending

An experimental investigation to study the effect of reinforced flanges on the torsional capacity of reinforced concrete T-beams is presented. Eighty-two T-beams with various flange widths and percentages of reinforcement were tested in combined torsion and bending to failure. Test results for cracking and ultimate moments show a great ...

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Ultimate Strength of Reinforced Concrete Beams in

investigation of torsion in reinforced concrete beams. In the past torsion has usually been treated as a secondary stress and therefore has not received the same attention as bending, transverse shear or compression. There are conditions, however, in which torsional mo­ ments could have a distinct effect on the carrying capacity of a concrete ...

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SID.ir Investigation of the Shear and Torsional Capacity ...

Jul 28, 2021  Investigation of the Shear and Torsional Capacity and Confinement of Rectangular Reinforced Concrete Beams with Spiral Stirrups. JOURNAL OF STRUCTURAL ENGINEERING. 2020 [cited 2021July28];17(2 ):33-45.

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(PDF) Investigation of Torsion behavior of high strength ...

This study aims is to investigating the structural capacity of fibbers reinforced deep beams with opening under pure torsion. The deep beams were made of high strength concrete.

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Torsional Strengthening of Reinforced Concrete Beams

Torsional Strengthening of Reinforced Concrete Beams Using CFRP Composites Ranj Rafeeq ... there were no guidelines for torsion design of reinforced concrete (RC) beams. Hence, many existing beams in older buildings have a lack of adequate torsional ... show an additional torsional capacity of 63% and 178% relative to their respective reference ...

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Effects of web reinforcing on torsional behavior of ...

on the toughness and torsional capacity of a member. The investigation was limited to rectangular beams with a depth-to-width ratio of approximately 3 to 1. The beam's were axially prestressed by the pretensioning method. The cross section of the member, concrete strength, prestressing force, and longitudinal rein­ forcing were treated as ...

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TORSION DESIGN OF PRESTRESSED CONCRETE

Design provisions for torsion in reinforced concrete members have been developed and included in the ACI 318-71 Building Code. These provisions are not applicable to prestressed concrete. Based on a thorough review of available research data on torsion in prestressed concrete, this paper proposes an extension of the ACI design procedures to cover

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Torsional behaviour of concrete-filled circular steel ...

In addition, the constraint of steel tube on concrete and the effect of axial force on concrete result in the torsional bearing capacity of core concrete to increase first and then decrease, which is the maximum when n = 0.6, and the stiffness increases with the increase of axial load level. Download : Download high-res image (259KB)

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Experimental investigation on rectangular reinforced ...

Rectangular reinforced concrete beam Chaisomphob, T., et al. Songklanakarin J. Sci. Technol. Vol. 25 No. 1 Jan.-Feb. 2003 42 codes. The comparison indicates that the current design codes give quite conservative values of ultimate capacity. Key words : reinforced concrete beams, bi-axial shear and torsion, ultimate capacity ∑«’ª ™—¬ ...

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(PDF) Experimental investigation on rectangular reinforced ...

Experimental investigation on rectangular reinforced concrete beam subjected to bi-axial shear and torsion ... Read Paper. Experimental investigation on rectangular reinforced concrete beam subjected to bi-axial shear and torsion. Download. Related Papers. Analysis of RC Structures Subjected to Multi-Directional Shear Loads. By Ravi Mullapudi.

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Torsional Strengthening of Reinforced Concrete Beams with ...

"Improving torsional behaviour of reinforced concrete beams strengthened with carbon fibre reinforced polymer composite." (2009): 315-327. Mohammadizadeh, M.R., Fadaee, M.J., “Experimental investigation on torsional strengthening of high-strength concrete beams using CFRP sheets.”

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Improving the Torsional Capacity of Reinforced Concrete ...

the ACI318-14 torsion equations are applicable and conservative for predicting the ultimate torsional capacity for beams with continuous rectangular and spiral reinforcement. Index Terms—Experimental study, Torsional capacity, Reinforced concrete beams, Spiral stirrups, Continuous

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Torsional Capacity of CFRP Strengthened Reinforced ...

Torsional Capacity of CFRP Strengthened Reinforced Concrete Beams. ... This paper briefly recounts the experimental work in an overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally bonded carbon fiber-reinforced polymer (CFRP). ... a design tool to analyze the full torsional capacity ...

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Tests and analysis of reinforced concrete beams under ...

character so far. Earlier investigations indicated that FRP materials caused a significant increase on the torsional capacity of the tested beams [5–7]. Torsion of plain, steel reinforced and fibre reinforced concrete beams has extensively been studied by several experimental and analytical researches [8–11].

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Calculation of Torsion Capacity of the Reinforced Concrete ...

This paper presents a model for calculation of torsion capacity of the reinforced concrete beams using the artificial neural network. Considering the complex reaction of reinforced concrete beams under torsion moments, torsion strength of these beams is depended on different parameters; therefore using the artificial neural network is a proper method for estimating the torsion capacity of the ...

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(PDF) Influence of Maximum Aggregate Size on Behavior of ...

investigations reveal that M 30 ... when the beam reaches its maximum capacity ... A simple experiment for the evaluation of the torsional strength of reinforced concrete beams as a one of this ...

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Study of torsional behavior of reinforced concrete beams ...

Nov 21, 2018  This paper investigates the strengthening of reinforced concrete (RC) beams for its torsional behavior using aramid fiber strips. Most of the time aramid fiber is used as an externally bonded reinforcement to increase flexural and shear strength of RC beams. An attempt is made to use it for improving torsional moment carrying capacity of RC beam. Torsional failure mostly occurs in

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Torsional Strengthening of Reinforced Concrete Beams with ...

"Improving torsional behaviour of reinforced concrete beams strengthened with carbon fibre reinforced polymer composite." (2009): 315-327. Mohammadizadeh, M.R., Fadaee, M.J., “Experimental investigation on torsional strengthening of high-strength concrete beams using CFRP sheets.”

Get Price

Experimental investigation on rectangular reinforced ...

Rectangular reinforced concrete beam Chaisomphob, T., et al. Songklanakarin J. Sci. Technol. Vol. 25 No. 1 Jan.-Feb. 2003 42 codes. The comparison indicates that the current design codes give quite conservative values of ultimate capacity. Key words : reinforced concrete beams, bi-axial shear and torsion, ultimate capacity ∑«’ª ™—¬ ...

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Torsional behaviour of concrete-filled circular steel ...

In addition, the constraint of steel tube on concrete and the effect of axial force on concrete result in the torsional bearing capacity of core concrete to increase first and then decrease, which is the maximum when n = 0.6, and the stiffness increases with the increase of axial load level. Download : Download high-res image (259KB)

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Load capacity and stiffness of angular cross section ...

Dec 01, 2011  The paper presents the results of tests, numerical analyses and theoretical analyses of reinforced concrete beams loaded with a torsional moment as well as a shearing force and a bending moment, carried out in the Research Laboratory of the Institute of Building Engineering at Wrocław University of Technology. The research focused on the load capacity and stiffness of such elements.

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Behaviour model and experimental study for the torsion of ...

results of an experimental investigation on the behaviour of 15 reinforced concrete beams subjected to pure torsion are also presented in this paper. The reported results include the behavioural curves and the values of the initial torsional stiffness, the cracking torque moment and the ultimate torque capacity

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Investigation of Torsion behavior of high strength short ...

Jul 01, 2020  This study aims is to investigating the structural capacity of fibbers reinforced deep beams with opening under pure torsion. The deep beams were made of high strength concrete. The openings were made in the web with different shapes (circular

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Torsional Strengthening of RC Beams with Near-Surface ...

Mar 18, 2020  The torsional capacity for the control beam was underestimated by 74% because the model was established based on space truss theory, which ignores the contribution of the concrete core to the torsional capacity. Moreover, the aggregate interlock, which has an additive effect on the torsional capacity of RC beams, is ignored in this model.

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Torsional behaviour of reinforced concrete beams with ...

The “U” wraps are found to provide better torque carrying capacity under all states of torsion while under reinforced members provide better toughness over other states of torsion. Similarly completely over reinforced beams provide more torque resisting capacity than the others. Increase of torsional capacity is more prominent in states of ...

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