Effects of unidirectional tensile stresses on punching shear strength of RC slabs
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Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/346488
Tipus de documentText en actes de congrés
Data publicació2020
EditorFéderation Internationale du Béton (fib)
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
RC slabs can be subjected to transverse loads and in-plane tensile forces simultaneously, as it occurs in top slabs of continuous box girder bridges at intermediate supports, or in floor slabs supported on columns and subjected to horizontal forces, due to skew in-plane compressions. Tensile forces can reduce the punching capacity of the slabs, aspect not studied yet. An experi-mental, numerical and theoretical investigation has been carried out, in which 5 1.65x1.65x0.12 m slabs have been tested under a point load and different degrees of unidirectional tensile force. Numerical predictions were made with FEA software ABAQUS and, from the theoretical point of view, the Compression Chord Capacity Model (CCCM) was extended to take into account the effect of in-plane tensile forces in the punching strength of the slabs. The experimental results showed that the ultimate punching load decreases linearly with the applied tensile force, and if that tensile force cracks the slabs, such reduction is higher. Results obtained with FEA and CCCM are in agreement with the observations made at the laboratory
CitacióFernandez, P. [et al.]. Effects of unidirectional tensile stresses on punching shear strength of RC slabs. A: fib International PhD-Symposium in Civil Engineering. "Proceedings of the 2020 session of the 13th fib International PhD Symposium in Civil Engineering". Lausana: Féderation Internationale du Béton (fib), 2020, p. 157-164. ISBN 978-2-940643-06-6.
ISBN978-2-940643-06-6
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