Corrado, Mauro and Paggi, Marco and Carpinteri, Alberto Cohesive-Overlapping Crack Model describing the size-scale effects on the rotational capacity of RC beams in bending. In: Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures - FraMCoS-7. Korea Concrete Institute, pp. 183-190. ISBN 978-89-5708-180-8 (2010)
Full text not available from this repository.Abstract
A numerical algorithm is proposed for the prediction of the mechanical behavior of the plastic hinges taking place in RC beams at the ultimate loading conditions. The main novelty of such an approach is the introduction of the Overlapping Crack Model, based on nonlinear fracture mechanics concepts, to describe concrete crushing, along with the well-known Cohesive Crack Model for concrete in tension and a stress versus crack opening displacement relationship for steel reinforcement. As a result of a systematic application of the proposed algorithm, new practical design diagrams are proposed for the improvement of the current codes of practice, which completely disregard the size-scale effects. In this context, Dimensional Analysis is also applied in order to obtain further simplifications in the description of the overall response. It is in fact demonstrated that only two nondimensional numbers, NP and NC, are responsible for the available ductility. A new interpretation of the experimental results on the plastic rotations in terms of NP and NC is also proposed.
| Item Type: | Book Section |
|---|---|
| Additional Information: | 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures - FraMCoS-7, Jeju, Korea, May 23-28, 2010 |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Research Area: | Computer Science and Applications |
| Depositing User: | Prof Marco Paggi |
| Date Deposited: | 16 Dec 2013 11:59 |
| Last Modified: | 09 Oct 2014 09:20 |
| URI: | http://eprints.imtlucca.it/id/eprint/2070 |
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