Finite Element Analysis of Prestressed and Reinforced Concrete Structures

Elmezaini, Nasreddin; Citipitioglu, E.

doi:10.1061/(asce)0733-9445(1991)117:10(2851)

Cited by 26 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the unbonded PC girder, the contact relationship between the PT and the concrete is coupling ( Figure 8(b); for the bonded PC girder, the PT is embedded in the concrete (Figure 8(c)) [26,27].…”

Section: Finite Element Analysis Modelmentioning

confidence: 99%

Failure Mechanism and Mechanical Properties of a Retard‐Bonded Prestressed Concrete Girder While Curing

Sui

Wang

Zhao³

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

The mechanical performance and failure mechanism of a retard-bonded (RB) type prestressed concrete (PC) girder in different curing periods are investigated through four-point loading experiments. Six RB-type PC girder specimens with three RB prestressed tendons (PTs) along the longitudinal direction were fabricated. The measurements include the following: the retard-bonded agent ages versus the load-carrying capacity of the girder, the deflection of girder, the strain distribution at key cross sections through the girder, the pressure at PT tensile and anchoring ends, crack distribution, and so on. The experimental results indicate that when stretching the PT within proper tensile period, the retarder curing ages have less impact on the cracking load and a greater impact on the ultimate bending strength; the ultimate bending strength of the RB-type PC girder increased with increased retarder curing. Nonetheless, stretching the PT after excessive retarder curing (after the retarder had solidified completely), the cracks in the PC girder’s pure bending segment are wider and less numerous, the ultimate bending strength of the girder is lower, and its ductility is poor.

show abstract

Section: Finite Element Analysis Modelmentioning

confidence: 99%

Failure Mechanism and Mechanical Properties of a Retard‐Bonded Prestressed Concrete Girder While Curing

Sui

Wang

Zhao³

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…El-Mezaini und Citipitoglu [11] verwendeten ein isoparametrisches Serendipity-Element mit beweglichen Seitenknoten. Sie erfaßten die Bewehrungsstäbe mit Zweiknoten-Stabelementen.…”

Section: Modifiziertes Bewehrungsmodellunclassified

“…Das Materialverhalten wird als linear-elastisch vorausgesetzt. Arafa [2] erweiterte die Vorgehensweise von EL-Mezaini und Citipitoglu [11] durch Implementierung eines nichtlinearen Materialmodells für den Beton und Stahl.…”

Section: Modifiziertes Bewehrungsmodellunclassified

Direkte Erfassung der Vorspannung mit nichtlinearer FE‐Berechnung

Arafa¹,

Mehlhorn²

2001

Bautechnik

View full text Add to dashboard Cite

Es wird ein Verfahren vorgestellt, mit dem die Spannglieder oder auch einzelne nicht vorgespannte Betonstähle, unabhängig vom FE-Netz des Betons, durch ein diskretes Modell angeordnet werden können. Die Abbildung der Netz-und Bügelbewehrung ist durch ein verschmiertes Bewehrungsmodell möglich. Die Vorspannkraft an der Anspannstelle und ihr Verlauf unter Berücksichtigung der Reibungs-und Nachlaßwirkung können direkt erfaßt werden. Die Verankerung kann durch Verwendung von Lagrangeschen Multiplikatoren, Penalty-Funktionen oder durch Kopplung der Stahl-und Betonknoten an der Verankerungsstelle zu gemeinsamen Knoten erfaßt werden. Für die numerischen Untersuchungen werden das elastisch-plastische Betonmodell und ein bilineares, elastischplastisches Stahlmodell verwendet. Direct representation for prestressing using nonlinear FE-analysis. A discrete model by which the prestressed tendons can be modelled independent on concrete FE-Mesh is presented.The secondary reinforcement and stirrups are represented using a smeared model. The prestressing force at the anchorage and prestress losses due to friction and slippage directly can be represented. The anchorage is modelled using Lagrange multiplier, Penalty function or by having a identical node for steel and concrete elements at the anchorage point. An elasto-plastic concrete model and bilinear elasto-plastic model for steel is used for numerical studies.

show abstract

“…On the other hand, no special finite elements are required for establishing the connection, since the contribution of the reinforcement to the global stiffness matrix is automatically achieved. E-Mezaini and Çitipitioǧlu [12] propose a technique to overcome the problem of mesh dependency, in which isoparametric elements with movable side nodes are applied to concrete, in which case the reinforcement layout can be positioned arbitrarily. This formulation, however, is very limited, since each concrete element cannot be crossed by more than one reinforcement segment.…”

Section: Introductionmentioning

confidence: 99%

Modeling reinforced concrete structures using coupling finite elements for discrete representation of reinforcements

Bitencourt

Manzoli

Trindade

et al. 2018

Finite Elements in Analysis and Design

View full text Add to dashboard Cite

This paper presents an alternative methodology to represent rebars and their bond-slip behavior against concrete based on coupling finite elements. Among the main features and advantages of the proposed technique are: (i) the coupling between the two independent meshes for concrete and reinforcement does not introduce any additional degree of freedom in the global problem; (ii) both rigid and non-rigid coupling can be used to represent the particular cases of perfect adherence and general bond-slip behavior, respectively; (iii) rebars of arbitrary geometry and orientation can be modeled; (iv) the methodology can be applied to 2D and 3D problems and (v) the formulation can be adapted to other type of finite elements and implemented easily in any existing FEM code. Constitutive models based on continuum damage mechanics are used to represent the concrete behavior and concrete-rebar interaction. A number of numerical analyses are performed and the results obtained show the versatility and accuracy of the proposed methodology.

show abstract

Finite Element Analysis of Prestressed and Reinforced Concrete Structures

Cited by 26 publications

References 8 publications

Failure Mechanism and Mechanical Properties of a Retard‐Bonded Prestressed Concrete Girder While Curing

Failure Mechanism and Mechanical Properties of a Retard‐Bonded Prestressed Concrete Girder While Curing

Direkte Erfassung der Vorspannung mit nichtlinearer FE‐Berechnung

Modeling reinforced concrete structures using coupling finite elements for discrete representation of reinforcements

Contact Info

Product

Resources

About