Print Email Facebook Twitter Shear capacity of steel fibre reinforced concrete beams Title Shear capacity of steel fibre reinforced concrete beams Author Abad, Belkis Filian (Universidad San Francisco de Quito) Lantsoght, E.O.L. (TU Delft Concrete Structures; Universidad San Francisco de Quito) Yang, Y. (TU Delft Concrete Structures) Contributor Derkowski, Wit (editor) Krajewski, Piotr (editor) Gwozdziewicz, Piotr (editor) Pantak, Marek (editor) Hojdys, Lukasz (editor) Date 2019 Abstract The Critical Shear Displacement Theory (CSDT) was developed to determine the shear capacity of reinforced concrete beams based on the different shear-carrying mechanisms (concrete in the compression zone, aggregate interlock, and dowel action). This research aims at extending the CSDT to Steel Fibre Reinforced Concrete (SFRC) by adding the contribution of steel fibres. The model extension was developed based on formulations for the contribution of steel fibres to the shear capacity from the literature. With this extension to the CSDT, the shear strength of steel fibre reinforced concrete beams without stirrups could be estimated. An extensive database is developed from the literature in order to evaluate, compare, and analyse the shear capacity of SFRC beams. The analysis indicates that two models are capable of predicting the shear strength of SFRC beams with reasonable accuracy. The mean, standard deviation, and coefficient of variation are 0.9, 0.28, 0.31 and 1.1, 0.33 and 0.30 respectively. The main geometric variables of the steel fibres that influenced the shear strength are the length, diameter, and fibre type (hooked, crimped, and straight). From the comparison between the results in the database and the proposed extensions to the CSDT it is found that the critical shear displacement of Δcr = 0.025 mm, gives reasonable results for SFRC. As such, this proposed method can be used to estimate the shear strength of SDRC based on a mechanical model. Subject BeamCritical shear displacementDatabaseShearSteel fibre reinforced concrete To reference this document use: http://resolver.tudelft.nl/uuid:3bfe96db-caf3-4c8f-b8f3-a809a2e8f920 Publisher Internation Federation for Structural Concrete (fib) ISBN 9782940643004 Source Proceedings of the FIB Symposium 2019: Concrete - Innovations in Materials, Design and Structures Event fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, 2019-05-27 → 2019-05-29, Krakow, Poland Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type conference paper Rights © 2019 Belkis Filian Abad, E.O.L. Lantsoght, Y. Yang Files PDF P0165_2_.pdf 597.99 KB Close viewer /islandora/object/uuid:3bfe96db-caf3-4c8f-b8f3-a809a2e8f920/datastream/OBJ/view