Establishing the Fiber Bridging Law by an Inverse Analysis Approach
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 2
Abstract
A method for establishing the relationship between stress and crack face opening for steel fiber–reinforced concrete (SFRC) beams under three-point loading was proposed using inverse analysis. The relationships were set up in two parts: Fracture mechanics theory was used before the hinge formation, followed by a classical mechanics of materials approach after the hinge was formed. This methodology did not incorporate any assumptions and was validated by the construction of experimental load versus crack mouth opening–displacement (CMOD) curves and by predicting the experimental load versus CMOD relationship for independent flexural tests on beams of different sizes. The proposed method can simulate and predict the complete flexural performance of SFRC beams under three-point bending.
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Acknowledgments
The financial support of the Engineering and Physical Sciences Research Council (EPSRC Ind. Case Studentship, No. 08002550) and Aggregate Industries, U.K., is gratefully acknowledged. The authors would like to express their gratitude to Ms. Yi Xu for her help in laboratory work, to the reviewers for their valuable comments, and also to Mr. Ian Breakwell, senior technician at the Civil Engineering Laboratories of Coventry University for his valuable suggestions, comments, and help. Special mention should also be made to Tarmac, AGS Mineraux, Power Minerals and Nippon Gohsei EU for providing various materials for research.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Nov 15, 2014
Accepted: May 19, 2015
Published online: Jul 15, 2015
Discussion open until: Dec 15, 2015
Published in print: Feb 1, 2016
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