eprintid: 2070
rev_number: 10
eprint_status: archive
userid: 56
dir: disk0/00/00/20/70
datestamp: 2013-12-16 11:59:08
lastmod: 2014-10-09 09:20:24
status_changed: 2013-12-16 11:59:08
type: book_section
metadata_visibility: show
creators_name: Corrado, Mauro
creators_name: Paggi, Marco
creators_name: Carpinteri, Alberto
creators_id: 
creators_id: marco.paggi@imtlucca.it
creators_id: 
title: Cohesive-Overlapping Crack Model describing the size-scale effects on the rotational capacity of RC beams in bending
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: none
note: 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures - FraMCoS-7, Jeju, Korea, May 23-28, 2010
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.
date: 2010
publisher: Korea Concrete Institute
pagerange: 183-190
refereed: TRUE
isbn: 978-89-5708-180-8
book_title: Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures - FraMCoS-7
related_url_url: http://framcos.org/FraMCoS-7.php#gsc.tab=0
related_url_url: http://framcos.org/FraMCoS-7/01-27.pdf
related_url_type: org
related_url_type: org
citation:   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)