Bemessung von Stahlbeton‐ und Spannbetonbalken unter kombinierter Beanspruchung infolge von Biegung, Querkraft und Torsion.

Kordina, Karl; Teutsch, Manfred

doi:10.1002/best.198300010

Cited by 6 publications

(12 citation statements)

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“…Investigations of constraint forces by imposed deformations have been carried out for several decades—for example, by Kordina, 2,3 Woidelko 4 and Losberg 5…”

Section: Overview Of Previously Performed Investigations On Constrain...mentioning

confidence: 99%

Extended experimental and numerical investigations on constraint forces from imposed deformations

Berger

Pfeiffer

Feix

2020

Structural Concrete

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Constraint forces are directly proportional to the stiffness of the system, so the size of the constraining force reduction depends on the ability of the system to reduce stiffness by the cracking of concrete, the plasticizing of reinforcement, or a time‐dependent process. Constraint forces can be differentiated in two cases: internal forces due to constraints that have the same or opposite action effects as the load in the relevant cross sections. For the first case, extensive experimental investigations have already been performed, and the results have been presented. For the second case, new extended experimental and numerical investigations were carried out to understand the development of the constraint. In these new tests, the concrete strength, percentage of reinforcement, and slenderness were varied. The obtained results serve to assess how constrained forces can be considered in the design of concrete structures.

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“…Investigations of constraint forces by imposed deformations have been carried out for several decades—for example, by Kordina, 2,3 Woidelko 4 and Losberg 5…”

Section: Overview Of Previously Performed Investigations On Constrain...mentioning

confidence: 99%

Extended experimental and numerical investigations on constraint forces from imposed deformations

Berger

Pfeiffer

Feix

2020

Structural Concrete

View full text Add to dashboard Cite

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“…Coefficients were determined which can be used for an analysis according to theory of elasticity that provide realistic values for the constraint forces. In the DAfStb issue 336 the results of investigations of the load bearing capacity and deformations of reinforced concrete beams under bending and simultaneous constraint due to imposed deformations were presented.…”

Section: Overview Of Previously Performed Investigations On Constrainmentioning

confidence: 99%

Constraint forces from imposed deformations

Berger

Feix

2018

Structural Concrete

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In statically indeterminate systems, imposed deformation generally cannot set freely. In order to achieve the deformation compatibility, constraint forces are required. From this, it can be deduced that the constraint forces for a given deformation are dependent on the stiffness of the system. The greater the stiffness, the greater the internal constraint forces. For this reason, constraint forces in reinforced concrete structures are generally worth mentioning and must be taken into account in the design. The accurate development of a constraint force depends on numerous factors. These are mainly the stiffness distribution over the length, stiffness of the cross section, ductility of the reinforcement and creep ability of concrete. To gain more information about the real behavior, experiments were carried out on reinforced concrete beams and prestressed beams.

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“…Es gilt danach: (10) Die Betrachtung der Rißbilder experimentell untersuchter Stahlbeton-und Spannbetonbalken unter reiner Torsionsbelastung läßt jedoch auch im Falle einer ungleichförmigen Bewehrung (m ≠ 1) nur geringfügige Abweichungen der Rißneigung von der rechnerischen Hauptzugrichtung unter dem Rißmoment erkennen (u.a. [6], [7]).…”

Section: Druckstrebenwinkel Unter Torsionsbelastungunclassified

Zur Torsionsbemessung von Stahlbeton‐ und Spannbetonbalken nach DIN 1045‐1

Zedler

Stangenberg

2005

Beton und Stahlbetonbau

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Für die Torsionsbemessung ist nach DIN 1045‐1 neben einer Ermittlung des Druckstrebenwinkels nach Gl. (73) auch der vereinfachte Ansatz eines Neigungswinkels von 45° zulässig. Untersuchungen zeigten, daß bei bestimmten Belastungskombinationen die beiden Verfahren nicht alternativ angewandt werden sollten. Zudem zeigt sich eine generelle Überschätzung der Druckstrebentragfähigkeit unter Torsion nach DIN 1045‐1. Vor dem Hintergrund dieser Ergebnisse werden ein Vorschlag zur Bestimmung des Druckstrebenwinkels für die Torsions‐ und Torsions‐Interaktionsbemessung sowie ein Ansatz zur Beschreibung der Geometrie des effektiven Hohlkastens vorgestellt. Vergleichend werden die Ergebnisse einer Auswertung der Datenbank nach Eurocode 2 in seiner Neufassung vom April 2002 dargestellt.

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Bemessung von Stahlbeton‐ und Spannbetonbalken unter kombinierter Beanspruchung infolge von Biegung, Querkraft und Torsion.

Cited by 6 publications

References 0 publications

Extended experimental and numerical investigations on constraint forces from imposed deformations

Extended experimental and numerical investigations on constraint forces from imposed deformations

Constraint forces from imposed deformations

Zur Torsionsbemessung von Stahlbeton‐ und Spannbetonbalken nach DIN 1045‐1

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