Curvature ductility of high strength concrete beams according to Eurocode 2

Bouzid, Haytham; Kassoul, Amar

doi:10.12989/sem.2016.58.1.001

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…The bending response is usually calculated by numerically based moment-curvature relations of the base section and the equivalent plastic hinge length [4]. Curvature ductility would provide to the structure an increased chance of survival against accidental impact and seismic attack [5]. Cracks in concrete, which reduce the stiffness of RC elements, occur at loads much smaller than those that correspond to the yielding of reinforcement and bearing capacity [6].…”

Section: Introductionmentioning

confidence: 99%

Betonarme Kirişlerin Moment-Eğrilik ve Etkin Kesit Rijitlkleri

Foroughi

Yüksel

2023

Politeknik Dergisi

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In this study, RC beam models with different parameters were designed to investigate nonlinear moment-curvature relationships and effective stiffness coefficients. Analytically investigated parameters were calculated from TBEC (2018), ACI318 (2014), ASCE/SEI41 (2017), Eurocode2 (2004) and Eurocode8 (2004, 2005 regulations and moment-curvature relationships. The effective section stiffness coefficient obtained from the analyses were compared with the effective section stiffness coefficient given for RC members in different regulations. Figure. Comparative moment-curvature and 𝑘 𝑒 − 𝜌 ′ /𝜌 relations for doubly RC beam sections with different parameters AimEarthquake-resistant structure design has three main principles: stiffness, strength and ductility. In this study, RC beam models with different concrete strength, tensile reinforcement ratio and compression reinforcement ratio were designed to investigate moment-curvature and effective section stiffness.

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Section: Introductionmentioning

confidence: 99%

Betonarme Kirişlerin Moment-Eğrilik ve Etkin Kesit Rijitlkleri

Foroughi

Yüksel

2023

Politeknik Dergisi

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“…As ductile characteristic is of crucial importance to structures especially in seismic regions, there arise concerns on the utilization of HSC in practice. Numerous experimental [6][7][8][9][10], numerical [11][12][13] and theoretical works [14][15][16][17][18][19][20] have been carried out to examine flexural ductility of single-span reinforced HSC members. A few researchers have also evaluated the shear [21] and torsional behavior [22,23] of single-span reinforced HSC members.…”

Section: Introductionmentioning

confidence: 99%

“…It is seen that the ductility factor increases almost linearly with increasing ε t . Based on the linear fit, the relationship between ductility factor and strain in tensile steel bars may be expressed by µ κ = −0.011 + 324.8ε t(15)…”

mentioning

confidence: 99%

Numerical Assessment on Continuous Reinforced Normal-Strength Concrete and High-Strength Concrete Beams

2023

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High-strength concrete (HSC) has been broadly applied to various civil structures for its advantages including high compressive strength and excellent durability and creep resistance. However, the brittleness of HSC raises concern about its use in practice. So far study on continuous reinforced HSC beams is limited. This work investigates the structural response of reinforced HSC continuous beams, and the results are compared with those of the counterparts made of normal-strength concrete (NSC). By applying a finite element method verified by experimental data, a comprehensive assessment is performed on two-span reinforced NSC and HSC (compressive strengths of 30, 60 and 90 MPa) continuous beams. A wide range of flexural reinforcement ratios are used to cover both under-reinforced and over-reinforced beams. The results show that reinforced HSC beams exhibit better flexural performance in terms of ultimate load, deformation, flexural ductility and moment redistribution, when compared to reinforced NSC beams. Formulae relating flexural ductility and moment redistribution with either neutral axis depth or tensile steel strain are suggested.

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“…Ductility of carrier elements is an important parameter in terms of structural safety. The ductility of the carrier elements that make up RC structures is the property that allows the structures to dissipate energy in the seismic region [5][6]. To be able to understand and realize the ductile seismic design of RC structures better, it is necessary to estimate the deformation capacity of structural bearing elements under effective earthquakes [7].…”

Section: Introductionmentioning

confidence: 99%

Non-linear displacement and deformation damage limits of reinforced concrete circular columns by analytical observations according to TBSC 2018

Foroughi

Yüksel

2022

International Advanced Researches and Engineering Journal

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In the study, based on the non-linear calculation methods used to determine the seismic performance of structures in TBSC 2018, the stress-strain, moment-curvature, displacement capacity, plastic rotation limits, and deformation-based damage limit values of the reinforced concrete circular cross-section columns were calculated and compared according to different design parameters. The studied effects of the design parameters on the non-linear relation of reinforced concrete columns were also evaluated in terms of strength, curvature, and displacement ductility of the sections. All design parameters affecting the non-linear behavior and deformation limits of the reinforced concrete circular cross-section columns were taken into account. Deformation demands for reinforced concrete structural members are essential for detecting element damage. Based on TBSC (2018), non-linear relationships of reinforced concrete columns were obtained in order to calculate plastic hinge properties and deformation limits. For the Limited Damage, Controlled Damage, and Collapse Prevention performance levels defined for the structural elements in TBSC 2018, plastic rotation and deformation limit values were obtained according to the characteristic values calculated from the non-linear analyzes of reinforced concrete circular columns. For column models, damage limits and damage zones calculated based on TBSC 2018 were shown on the visually obtained moment-curvature relationships. Depending on the upper deformation limit values derived, cross-sectional deformation damage levels were determined and evaluated using the moment-curvature relationships. The variation of the non-linear behavior of column models by design parameters and deformation-based damage limits were examined both analytically and visually. The deformation limits remain in a safer direction as a result of increasing longitudinal and spiral reinforcement ratios for the reinforced concrete circular columns.

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Curvature ductility of high strength concrete beams according to Eurocode 2

Cited by 4 publications

References 10 publications

Betonarme Kirişlerin Moment-Eğrilik ve Etkin Kesit Rijitlkleri

Betonarme Kirişlerin Moment-Eğrilik ve Etkin Kesit Rijitlkleri

Numerical Assessment on Continuous Reinforced Normal-Strength Concrete and High-Strength Concrete Beams

Non-linear displacement and deformation damage limits of reinforced concrete circular columns by analytical observations according to TBSC 2018

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