Zuverlässigkeit schlanker Betonstützen

Strauß, Alfred; Benko, Vladimír; Tãubling, Benjamin; Valašík, Adrián; Čuhák, Marek

doi:10.1002/best.201700019

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…In a non-linear analysis of concrete structures, Sucharda et al [18] examined the behavior and performance of RC beams without shear reinforcement. For this purpose, the researcher used stochastic modelling (Valašík et al [19]; Strauss et al [20]; Wu, et al [21]). Kozielova et al [22] used Newton-Rapson method for modelling of interaction of a RC slab with subsoil.…”

Section: A C T E Dmentioning

confidence: 99%

Retracted: Non-Linear Analysis of Hybrid Reinforced T- Beam with Partial Substitution Recycled Rubberized Concrete

Ahmed,

Almutairi,

Domat

2023

Civil and Environmental Engineering

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At present, the need to make use of industrial waste materials is increasing due to their harmful effects on the environment. In the present work, the behavior of hybrid reinforced T-Beam with partial substitution recycled rubberized concrete is studied. The finite element modeling by using ANSYS version 15 program. It contains also all the required steps needed to create the concrete models that were prepared to study the behavior of beams with partial substitution recycled rubberized concrete (RRC). The reinforcement of beams was various combinations of polymer GFRP and steel bars. The Rubberized concrete mixes were prepared by partial substitution 7.5 %, 10 %, and 12.5 % replacements by volume. The ratio of GFRP to steel reinforcement at mid‐span section was the second parameter investigated. Due to the large number of parameters affecting the behavior of Hybrid Reinforced T- Beam with partial substitution Recycled Rubberized Concrete, an extensive parametric study was performed using ANSYS version 15 program. Three parameters were investigated namely; Bottom RFT, compressive strength of concrete, and the existence of opening. The analytical results agree well with the experimental results in terms of mode of failure and the failure load values. The results indicated that although the flexural capacity of the tested specimen decreased with the addition of Crumb Rubber and reduced its self-weight. The failure load of the beam with partial substitution recycled rubberized concrete increases with bottom reinforcement by the GFRP bar or CFRP bar. Also, reinforced beams by CFRP bars had a higher failure load than reinforced beams by GFRP bars. Having an opening in hybrid reinforced T-Beam with partial substitution recycled rubberized concrete reduced the beam load capacity and maximum deflection. Also, using GFRP bars, and CFRP bars in the vicinity of openings in hybrid reinforced T-Beams increased the load capacity of these beams.

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Section: A C T E Dmentioning

confidence: 99%

Retracted: Non-Linear Analysis of Hybrid Reinforced T- Beam with Partial Substitution Recycled Rubberized Concrete

Ahmed,

Almutairi,

Domat

2023

Civil and Environmental Engineering

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“…In a further step, the reliability and the sensitivity analyses were also performed for the N-M gradients with respect to the associated I-Ds by using the non-linear finite element (NLFEM) elaborations [3,32]. These probabilistic NLFEM studies, as allowed in EN 1992-1-1 [8], also primarily served to evaluate the proposed safety factors for NLFEM considerations [33].…”

Section: Reliability Assessmentmentioning

confidence: 99%

“…All of the variables shown in Equation ( 9) on the right are basic variables which are described using PDFs. Depending on the analysis method, e.g., (a) based on the analytical formulation of the code regulations or (b) based on the NLFEM studies, the resistance side (K R • R) in Equation ( 9) corresponds to the interaction diagram (I-D) which corresponds to the function of the maximum permissible N-M values, while the action side (K E •(g + q)) of Equation ( 9) corresponds to the acting N-M load path so that the intersection of the N-M load path with the I-D characterizes the maximum permissible N-M values; further details can also be found in [33,34]. Both strategies have it in common that the model uncertainties are taken into account in determining the necessary partial safety factors.…”

Section: Probabilistic Analysesmentioning

confidence: 99%

Probabilistic and Semi-Probabilistic Analysis of Slender Columns Frequently Used in Structural Engineering

et al. 2021

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The stability of slender columns is a topic that has been dealt with in research and practice for many years. The importance of this topic also increases with the possibility of using non-linear modeling approaches to determine the stability and with the increasingly complex safety formats. In order to show the complexity and the variability associated with the non-linear models, two previous contributions discussed and compared (a) the results of the Round Robin Non-Linear Modeling, and (b) the existing international associated standard specifications and safety concepts with respect to experimental results. The aim herein is to determine the reliability level (safety index) on the basis of these investigations and findings and to examine the existing safety formats of classical and extended probabilistic analyses and to derive any necessary adjustments. In addition, the method of the safety format Estimation of Coefficient of Variance of resistance (ECOV) is used for the determination of the global safety resistance factors based on the non-linear analyses’ findings of the Round Robin modeling partners.

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“…Nonlinear calculations were compared with a series of experimentally verified slender columns. 4,[6][7][8][9] State of the Art "Design of Slender Columns" EN 1992-1-1 10 includes the general method ( §5.8.6), the procedure with nominal stiffness ( §5.8.7) and the method with nominal curvatures ( §5.8.8) hence basically providing three verification methods for the design of slender compressive elements. We believe the results with these three methods should be compared with those proposed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Round-Robin Modelling of the Load-bearing Capacity of Slender Columns by Using Classical and Advanced Non-linear Numerical and Analytical Prediction Tools

Strauß

Ivanković

Benko

et al. 2020

Structural Engineering International

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Non-linear finite element analyses have intrinsic model and user factors that influence the results of the analyses. However, non-linear finite element analysis can provide a tool to assess safety using realistic descriptions of material behaviour with actual material properties. A realistic estimation of the existing safety and capacity of slender column elements can be achieved by means of "true" material properties. Nevertheless, it seems that for some structural components, such as slender columns, non-linear finite element analyses can, due to its complexity and its various setting parameters, cause the risk of overestimating the real performance of analysed components or systems. Hence, an invited expert group has carried out an investigation into the experimental testing and the prediction of the bearing capacity of slender columns by performing independent non-linear finite element analyses in order to determine the practical applicability, and its inconsistencies, with respect to the stability failure of slender columns. This work aims the characterization of modelling uncertainties, concerning the prediction of slender columns stability when forecasted by non-linear finite element analysis.

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Zuverlässigkeit schlanker Betonstützen

Cited by 9 publications

References 16 publications

Retracted: Non-Linear Analysis of Hybrid Reinforced T- Beam with Partial Substitution Recycled Rubberized Concrete

Retracted: Non-Linear Analysis of Hybrid Reinforced T- Beam with Partial Substitution Recycled Rubberized Concrete

Probabilistic and Semi-Probabilistic Analysis of Slender Columns Frequently Used in Structural Engineering

Round-Robin Modelling of the Load-bearing Capacity of Slender Columns by Using Classical and Advanced Non-linear Numerical and Analytical Prediction Tools

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