Stress-Block Parameters for Unconfined and Confined Concrete Based on a Unified Stress-Strain Model

Karthik, Madhu M.; Mander, John B.

doi:10.1061/(asce)st.1943-541x.0000294

Cited by 92 publications

(40 citation statements)

References 4 publications

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“…13 depicts the axial force versus moment capacity interaction diagrams for the test circular TRC specimens, where the diagram was calculated by changing the height of compression zone x cu in Eqs. (19) and (20). It is shown that the predictions from theory have a good agreement with the test results.…”

Section: Axial Force Versus Moment Capacity Interaction Diagrammentioning

confidence: 98%

“…The equivalent rectangular stress block is widely adopted to be substituted for the nonlinear stress diagram of the compressed concrete, in order to simplify the analysis of cross-sections of flexural and eccentrically loaded RC members [18,19]. The stress block method is described through the effective strength αf cc and the effective height of compression zone βx cu to make sure the magnitude and location of the force in the compressed concrete to be unchanged, as shown in Fig.…”

Section: Stress Block Parametersmentioning

confidence: 99%

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Behavior of square tubed reinforced-concrete short columns subjected to eccentric compression

Liu

Wang

Zhang

2015

Thin-Walled Structures

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Section: Axial Force Versus Moment Capacity Interaction Diagrammentioning

confidence: 98%

Section: Stress Block Parametersmentioning

confidence: 99%

Behavior of square tubed reinforced-concrete short columns subjected to eccentric compression

Liu

Wang

Zhang

2015

Thin-Walled Structures

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“…The green color in Fig. 7b represents the concrete considered using Mander's model for confined concrete [29,30] whereas the light-blue color, the concrete cover, was modeled using unconfined model. Both models take into account the shear stresses, as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the Load Carrying Capacity of Short RC Columns Strengthened with a Novel Cementitious Material by Using FEA

Toma

Covatariu

Lungu

et al. 2013

AEF

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Numerical simulations based on the Finite Element Method (FEM) have become an important tool in studying various phenomena of interest to both researchers and practitioners alike. The recent advances in computational power coupled with accurate mathematical models have made FEM an indispensable tool for investigating complex loading states and material behavior that are frequently met in civil engineering. Strengthening of existing RC columns is becoming a pressing issue in the field of civil engineering due to the necessity of meeting new safety requirements for the buildings located in active seismic areas. Jacketing is a widely used method for strengthening of reinforced concrete columns showing good results in terms of increased strength and stiffness but with the addition of some unwanted effects amongst which the added dead weight is of primary importance in case of an earthquake. The paper presents the results obtained by means of Finite Element Analysis (FEA) on the load carrying capacity of short RC columns strengthened with a novel Cementitious material that may be the solution to lighter structures and lower added costs compared to other existing methods.

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“…The comparison of the ultimate strain of confined concrete between test value and calculated values as shown in Figure 1 2. Karthik model [3] Karthik assumed that when the ultimate strain of confined concrete was five times of the peak strain of confined concrete, i.e. :…”

Section: Mander Modelmentioning

confidence: 99%

“…Literature [2] applied the energy principle to study the ultimate strain of confined concrete. Literature [3,4] proposed the calculation formula of the ultimate strain of confined concrete. Base on the comparison of existing model, the equations for calculating ultimate strain of confined concrete are proposed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Study on the Ultimate Strain of High-Strength Concrete Confined with High-Strength Stirrups

Wang¹,

Shi²

2016

dteees

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Abstract. High-strength stirrups confinement could improve the deformation behavior of concrete member effectively. In this paper, the equations for calculating ultimate strain of confined concrete are proposed through regression analysis of experimental data. The calculated results show that the analytical results and the experimental value were close and have relatively less discretion. The formula is feasible in the mechanical analysis of confined concrete member confined with high-strength lateral stirrups.

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Stress-Block Parameters for Unconfined and Confined Concrete Based on a Unified Stress-Strain Model

Cited by 92 publications

References 4 publications

Behavior of square tubed reinforced-concrete short columns subjected to eccentric compression

Behavior of square tubed reinforced-concrete short columns subjected to eccentric compression

Evaluation of the Load Carrying Capacity of Short RC Columns Strengthened with a Novel Cementitious Material by Using FEA

Study on the Ultimate Strain of High-Strength Concrete Confined with High-Strength Stirrups

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