Dynamic structural response of reinforced concrete dry storage casks subjected to impact considering material degradation

Hanifehzadeh, Mohammad; Gencturk, Bora; Willam, Kaspar

doi:10.1016/j.nucengdes.2017.10.001

Cited by 20 publications

(4 citation statements)

References 21 publications

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“…Abaqus ® was used to simulate the FEM of both bridge samples presented in this work and perform nonlinear static WOP [20]. e concrete damage plasticity model was used to detect both compressive crushing and tensile cracking at all concrete regions [21][22][23].…”

Section: Stage (1): Construct Calibrated Femmentioning

confidence: 99%

Finite Element Model‐Based Weight‐Over Process Philosophy for Bridge Loading Capacity Evaluation and Rating Factor Estimation

Karimpour

Rahmatalla

Ghadikolaee

2021

Advances in Civil Engineering

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Existing rating methods estimate bridge loading capacity and demand from secondary actions due to live loads in the primary structural components. In these methods, uniaxial yielding stress is traditionally used to detect component capacity using either stress quantities or shear-moment actions to compute the capacity demand of the bridge. These approximations can lead to uncertainties in load capacity estimation. This article presents the weight-over process (WOP), a novel computer-aided approach to bridge loading capacity evaluation based on tonnage and rating factor estimation. WOP is expected to capture different forms of failure in a more general manner than existing methods. In WOP, a bridge finite element model (FEM) is discretized into many sections and element sets, each containing a single material type, and each assigned a suitable 3D failure criterion. Then, factored gross vehicle weights (GVWs) are incrementally imposed on the bridge FEM with those predefined ultimate unfavored loading scenarios in a manner similar to proof load testing. WOP code runs nonlinear analysis at each increment until a stopping criterion is met. Two representative bridges were selected to confirm WOP’s feasibility and efficacy. The results showed that WOP-predicted values at the interior girders were between those of the conventional AASHTO and the nondestructive testing (NDT) strain measurement methods. That may put WOP in a favorable zone as a new method that is less conservative than AASHTO but more conservative than real NDT testing.

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Section: Stage (1): Construct Calibrated Femmentioning

confidence: 99%

Finite Element Model‐Based Weight‐Over Process Philosophy for Bridge Loading Capacity Evaluation and Rating Factor Estimation

Karimpour

Rahmatalla

Ghadikolaee

2021

Advances in Civil Engineering

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“…w s : es el peso de la misma armadura después del proceso de corrosión y después de haber sido sometida a un decapado químico. Para determinar la sección residual de la armadura, se utiliza el peso específico convencional del acero y se determina siguiendo la definición de sección equivalente (S eq ) con la ecuación (7):…”

Section: Técnicas De Corrosión Aceleradaunclassified

“…La corrosión afecta el comportamiento de tracción de las barras de acero, reduce el área de la sección transversal, por lo tanto, la capacidad de carga de las barras y la pérdida de ductilidad, además induce una reducción no uniforme en el área de la sección transversal a lo largo de la longitud de las barras (corrosión por picadura) y, por lo tanto, disminuye la capacidad de deformación de las barras [3,4,5,6,7,8].…”

Section: Introductionunclassified

Estudio comparativo del comportamiento mecánico de armaduras de acero inoxidable y al carbono, en función de su grado de corrosión

et al. 2021

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En este trabajo se evaluó experimentalmente el comportamiento mecánico de armaduras de acero inoxidable y al carbono en función de su grado de corrosión, en comparación con el comportamiento mecánico del acero al carbono. Para ello se sometieron a ensayos de tracción barras corrugadas de acero inoxidable y acero al carbono de 16 mm de diámetro corroídas de forma acelerada en una etapa anterior y con un factor desencadenante la presencia del ion cloruro, con el fin de estudiar el efecto de la corrosión sobre sus propiedades mecánicas y su ductilidad en base al concepto de acero equivalente. A partir de los resultados se pudo comprobar que la influencia de la corrosión a los aceros inoxidables es mucho menor a los del acero al carbono, cumpliendo con los valores mínimos que se establecen en la normativa europea con respecto a estructuras de hormigón armado (CM-90, EC2 y EHE).

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“…The uniaxial compressive strength of concrete was taken as 50 MPa. The CDP constitutive behavior has been successfully utilized in many blast, impact and nonlinear analysis cases [15][16][17][18][19]. The compressive and tensile behavior in uniaxial direction is shown in Figure 2.…”

Section: Finite Element Analysismentioning

confidence: 99%

Predicting the Structural Performance of Sandwich Concrete Panels Subjected to Blast Load Considering Dynamic Increase Factor

Hanifehzadeh¹,

Mousavi²

2019

JCEST

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The safety of the civil structures could be significantly improved against shock waves and blast loads by using steel concrete steel (SCS) protective walls. A numerical study has been performed to simulate the response of SCS wall subjected to a near-field blast load. A conventional SCS panel subjected to near-field blast load and its structural performance is evaluated in terms of maximum damage and deformation. The simulations performed using ABAQUS\EXPLICIT finite element package and built-in concrete damage plasticity concrete constitutive formulation. The maximum deformation, plastic strain, and failure mode under different loading scenarios have been investigated. The aim of this study is predicting the structural response of the SCS panel with different blast charge and identification of optimum configuration in terms of concrete strength and plate thickness. In the second part of the study, two novel sandwich configurations consisting of a corrugated metal sheet and the concrete core are proposed and compared with the conventional protective walls. The optimum parameters for each structural component are identified using an optimization procedure. Based on this study, using the proposed wall configuration will results in superior performance compared to the conventional walls while the extra cost of fabrication is insignificant.

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Dynamic structural response of reinforced concrete dry storage casks subjected to impact considering material degradation

Cited by 20 publications

References 21 publications

Finite Element Model‐Based Weight‐Over Process Philosophy for Bridge Loading Capacity Evaluation and Rating Factor Estimation

Finite Element Model‐Based Weight‐Over Process Philosophy for Bridge Loading Capacity Evaluation and Rating Factor Estimation

Estudio comparativo del comportamiento mecánico de armaduras de acero inoxidable y al carbono, en función de su grado de corrosión

Predicting the Structural Performance of Sandwich Concrete Panels Subjected to Blast Load Considering Dynamic Increase Factor

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