Modeling the Full Behavior of Reinforced Concrete Flanged Beams under Torsion

Bernardo, Luís

doi:10.3390/app9132730

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…In general, it can be stated that the smeared constitutive law l 4 from Belarbi and Hsu (1994) [ 24 ] allows us to best predict the cracking torque, regardless of the cross-section type. This constitutive law has been widely used by authors in previous studies [ 9 , 16 , 17 , 18 , 19 , 23 , 26 ]. The results from Table 1 confirm the validity of such studies having chosen this smeared constitutive law for tensile concrete.…”

Section: Comparison With Experimental Resultsmentioning

confidence: 99%

“…The predictions from the GSVATM showed good agreement with experimental results for all loading stages. The GSVATM was recently extended for PC beams [ 17 ], hollow RC beams [ 18 ] and RC flanged beams [ 19 ]. A unified version of the model was also recently proposed [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

“…The GSVATM was the chosen model because, as previously stated, it is able to predict the full response of the RC beams under torsion for all loading stages. In addition, this model was proposed by the corresponding author [ 16 ] and has also been successfully used in previous studies [ 2 , 17 , 18 , 19 , 21 ]. The chosen parameters to be studied are the cracking torque and the corresponding twist.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Smeared Constitutive Laws for Tensile Concrete to Predict the Cracking of RC Beams under Torsion with Smeared Truss Model

Teixeira

Bernardo

2021

Materials

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In this study, the Generalized Softened Variable Angle Truss-Model (GSVATM) is used to predict the response of reinforced concrete (RC) beams under torsion at the early loading stages, namely the transition from the uncracked to the cracked stage. Being a 3-dimensional smeared truss model, the GSVATM must incorporate smeared constitutive laws for the materials, namely for the tensile concrete. Different smeared constitutive laws for tensile concrete can be found in the literature, which could lead to different predictions for the torsional response of RC beams at the earlier stages. Hence, the GSVATM is used to check several smeared constitutive laws for tensile concrete proposed in previous studies. The studied parameters are the cracking torque and the corresponding twist. The predictions of these parameters from the GSVATM are compared with the experimental results from several reported tests on RC beams under torsion. From the obtained results and the performed comparative analyses, one of the checked smeared constitutive laws for tensile concrete was found to lead to good predictions for the cracking torque of the RC beams regardless of the cross-section type (plain or hollow). Such a result could be useful to help with choosing the best constitutive laws to be incorporated into the smeared truss models to predict the response of RC beams under torsion.

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Section: Comparison With Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of Smeared Constitutive Laws for Tensile Concrete to Predict the Cracking of RC Beams under Torsion with Smeared Truss Model

Teixeira

Bernardo

2021

Materials

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“…There is, however, still no clear consensus in torsional design method of reinforced concrete (RC) members. Because of rapid development in engineering technology and structural materials, 4–6 various irregular concrete buildings have been recently constructed. Thus, a safe torsional design is required especially for exterior columns and spandrel beams, where large torsional moment is expected due to asymmetric structural system, span, and loading conditions 7–10 …”

Section: Introductionmentioning

confidence: 99%

Torsional design method used in Eurasia region: A comparative study

Lee

Kim

et al. 2021

Structural Concrete

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This study conducted an extensive review and evaluation of torsional design methods specified in SNiP and other international building codes. Unlike thin‐walled tube approach utilized as a key basis of design expressions in ACI 318, CSA, and Eurocode 2, skew‐bending theory is still adopted as torsional design methods specified in SNiP code used through Eurasia region. This comparative study is timely required since there are radical code changes in leading Eurasia countries, such as Russia, Kazakhstan, and Uzbekistan, toward Eurocode from SNiP code. To this end, a total of 253 reinforced concrete (RC) specimens that failed in pure torsion were collected from the literature to compare the analytical accuracy of the torsional design methods specified in various design codes. It was found that the torsional design methods specified in SNiP and CSA codes can estimate the torsional strengths of RC members with good level of accuracy, while Eurocode 2 provided quite conservative results. In addition, the maximum limitations stipulated in each design code on the compressive strength of concrete and yield strength of reinforcements are of importance for the safe and efficient torsional design due to interrelation between reinforcement ratios considering materials strengths and inclination angle of compressive concrete strut.

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“…Figure 2 shows the steel plates arrangement for beams specimens. Many previous researches studied the effect of torque [16][17][18][19][20][21][22][23][24][25]. This study is very important to increase the torque capacity to the beams.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Reinforced Concrete Beams with effect of Stiffened Plates

Amli

Shakir

Abdulredha³

et al. 2019

Civ Eng J

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This study presents experimental work including an investigation conducted on five simply supported reinforced concrete beams under pure torsion. First beam without strengthening as a control beam. The other four beams were strengthened externally by bolted thin steel plates. For this test the load was applied gradually. The torque was increased gradually up to failure of the beam. The variables were the thickness and height of the steel plate that was externally connected to both sides of the rectangular reinforced concrete beam. The test results for the beams discussed are based on torque-twist behavior. The experimental results show that the attachment of thin steel plates by mechanical means to beams provides a considerable improvement in the torsional behavior of the reinforced concrete beams. Comparable to the reference beam, the maximum increase in the cracking and the ultimate torque of the composite beam was recorded for the reinforced concrete beam that strengthen by steel plate of (150) mm height, (2mm) thickness and (50mm) spacing between shear connectors (B1). The results revealed that the cracking torque, ultimate torque, global stiffness of beam and beam ductility for all composite beams increase with the increase of the plate's thickness, plate's height.

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Modeling the Full Behavior of Reinforced Concrete Flanged Beams under Torsion

Cited by 13 publications

References 18 publications

Evaluation of Smeared Constitutive Laws for Tensile Concrete to Predict the Cracking of RC Beams under Torsion with Smeared Truss Model

Evaluation of Smeared Constitutive Laws for Tensile Concrete to Predict the Cracking of RC Beams under Torsion with Smeared Truss Model

Torsional design method used in Eurasia region: A comparative study

Behavior of Reinforced Concrete Beams with effect of Stiffened Plates

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