Shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams subjected to point or distributed loads

Bernat, Antonio Ricardo Marí; Cladera, A.; Bairán, Jesús M.; Oller, Eva

doi:10.1007/s11709-014-0081-0

Cited by 49 publications

(35 citation statements)

References 22 publications

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“…[2][3][4][5][6] may be found elsewhere [22,23]. Shear resistance of cracked concrete in the web (Eq .…”

Section: Resistance Of Compression Chord Is Governed By Kupfer's Biaxmentioning

confidence: 99%

“…The concrete chord contribution V c can be similarly derived by including the distributed load in the equilibrium equations as Marí et al [23] deduced. The reaction should be calculated by adding to the predicted ultimate shear at the critical section, the portion of distributed load in the support neighbourhood who runs directly to the support.…”

Section: Resistance Of Compression Chord Is Governed By Kupfer's Biaxmentioning

confidence: 99%

“…This fact has been also recognized by different researchers [5,7,[14][15][16][17][18][19] which consider that part of the flange width contributes to the shear strength. In previous works, a shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams was developed by the authors and experimentally verified with large databases of shear tests of steel and FRP reinforced concrete beams with rectangular cross section [21][22][23]. The model is based on the assumption that, at ULS, shear is resisted mainly by the un-cracked concrete chord, by residual tensile stresses in the closest part of the critical crack, by the longitudinal reinforcement (dowel action) if stirrups are provided and by the stirrups.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Predicting the shear–flexural strength of slender reinforced concrete T and I shaped beams

Cladera

Bernat

Ribas

et al. 2015

Engineering Structures

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“…[2][3][4][5][6] may be found elsewhere [22,23]. Shear resistance of cracked concrete in the web (Eq .…”

Section: Resistance Of Compression Chord Is Governed By Kupfer's Biaxmentioning

confidence: 99%

Section: Resistance Of Compression Chord Is Governed By Kupfer's Biaxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Predicting the shear–flexural strength of slender reinforced concrete T and I shaped beams

Cladera

Bernat

Ribas

et al. 2015

Engineering Structures

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“…El comportamiento de las vigas ha sido objeto de múltiples y diversos estudios [5][6][7][8][9], desde la teoría de Vlasov [9], aplicable a vigas de pared delgada en materiales isótropos, se han realizado numerosas investigaciones ampliando la teoría de Vlasov a laminados compuestos sin tener en cuenta las deformaciones transversales en sus análisis [10], desarrollando expresiones simples para el análisis a flexión, torsión y alabeo de http://polired.upm.es/index.php/abe | Cod. 0008 | Enero -Abril 2017 | Vol.…”

Section: Introductionunclassified

“…Nº 1 | pp. 37/46 | | 39 | vigas en compuestos [6][7][8][9][10][11][12], incluyendo las deformaciones tangenciales por flexión y torsión en la cinemática [13].…”

Section: Introductionunclassified

Implementación TIC en la docencia universitaria: estudio de los esfuerzos en vigas = Implementing ITC in higher education: study of effort on beams

et al. 2017

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ResumenEn el presente artículo se presenta una práctica académica que aporta una visión de la evolución de los esfuerzos resultantes en vigas debido a las cargas concentradas o distribuidas en vigas isostáticamente apoyadas. Debido a la versatilidad del sistema se pueden realizar medidas dinámicas cambiando la disposición geométrica de la carga o su valor observando en tiempo real el cambio en los esfuerzos medidos. Por contraposición a las medidas clásicas de esfuerzos, consistentes en la sucesión de medidas estáticas costosas en tiempo y que suelen conllevar que los alumnos “desconecten” de la práctica, la capacidad de realizar medidas dinámicas permite que los alumnos adquieran una comprensión rápida y más intuitiva de cómo cambian los esfuerzos que afectan a la viga (elemento estructural) en función de la carga. El coste de los materiales y la infraestructura necesarios para esta práctica es lo suficientemente bajo como para que sea posible su implementación en casi cualquier centro formativo.AbstractThis work shows a new teaching practice focused on a better understanding of the efforts on beams, both owing to concentrated or distributed loads in isostatically supported beams. Due to the system versatility, it can obtain dynamic measurements changing the geometric arrangement of the load or its values. The system allows us to obtain, in real time, the measurements of efforts. By contrast to the classical measurements, that consist in the succession of static measures which during for so long and entail the students don’t pay attention to the practice. This ability to get dynamic measurements allows that students get an intuitive knowledge and a better understanding of how the efforts affect the beam (structural element) versus the load. The cost of materials needed to carry out this practice and its own infrastructure is very low and because of that, is affordable for the most academic centers.

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Rissreibung in Biegeschubrissen

Jauk

Rombach

2023

Beton und Stahlbetonbau

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zu seinem Eintritt in den Ruhestand gewidmet 1 Einleitung Die Querkrafttragfähigkeit von Stahlbetonbauteilen ist seit Anfang des 20. Jahrhunderts Gegenstand der Forschung. Trotzdem liegt bislang kein allgemein anerkanntes mechanisches Modell für die Bemessung von Betonbauteilen ohne Schubbewehrung vor. In den 60er-und 70er-Jahren des letzten Jahrhunderts wurden verschiedene Tragmechanismen beim Querkraftabtrag experimentell identifiziert [1, 2]. Diese lassen sich für längsbewehrte Stahlbetonbauteile in folgende Anteile aufteilen: -Dübelwirkung der Längsbewehrung V cr,d -Zugspannungen in der Rissprozesszone V cr,σ -Querkraft in der Biegedruckzone V cc -Rissreibung V ai -direkte Druckstrebe in der Nähe von Auflagern -Bügelbewehrung V s,bü (falls vorhanden) Über das Vorhandensein der einzelnen Tragmechanismen, die zur Querkrafttragfähigkeit beitragen, herrscht weitgehend Konsens. Offen ist die Frage, in welcher Größenordnung die einzelnen Anteile am gesamten Querkraftabtrag beteiligt sind.

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Shear-flexural strength mechanical model for the design and assessment of reinforced concrete beams subjected to point or distributed loads

Cited by 49 publications

References 22 publications

Predicting the shear–flexural strength of slender reinforced concrete T and I shaped beams

Predicting the shear–flexural strength of slender reinforced concrete T and I shaped beams

Implementación TIC en la docencia universitaria: estudio de los esfuerzos en vigas = Implementing ITC in higher education: study of effort on beams

Rissreibung in Biegeschubrissen

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