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EnglishModelling of existing reinforced concrete (r.c.) frames designed without specific seismic rules is a key problem for maintenance, structural upgrading and seismic assessment. In many European countries a very large percentage of reinforced concrete buildings are 40 years old, or even older; thus reinforcement consists of smooth rebars, since only in the 1970’s did early applications of deformed rebars appear. Technical literature on mechanical performances of anchored smooth rebars is non-comprehensive, mainly from the deformation standpoint, despite the relevance of this aspect to the response of critical regions, i.e. beam to column joints and column bases. In the present paper a series of experimental tests on smooth rebars are presented; they are aimed at describing in detail the force–slip relation for the bond mechanism for straight rebars and for anchoring end details, i.e. circular hooks with a 180∘ opening angle.
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.engstruct.2005.05.002 | |
| Codice identificativo ISI: | WOS:000231277800012 | |
| Codice identificativo Scopus: | 2-s2.0-21044435791 | |
| Handle: | http://hdl.handle.net/11695/102 | |
| URL: | http://www.sciencedirect.com/science/article/pii/S0141029605001938 | |
| Abstract: | Modelling of existing reinforced concrete (r.c.) frames designed without specific seismic rules is a key problem for maintenance, structural upgrading and seismic assessment. In many European countries a very large percentage of reinforced concrete buildings are 40 years old, or even older; thus reinforcement consists of smooth rebars, since only in the 1970’s did early applications of deformed rebars appear. Technical literature on mechanical performances of anchored smooth rebars is non-comprehensive, mainly from the deformation standpoint, despite the relevance of this aspect to the response of critical regions, i.e. beam to column joints and column bases. In the present paper a series of experimental tests on smooth rebars are presented; they are aimed at describing in detail the force–slip relation for the bond mechanism for straight rebars and for anchoring end details, i.e. circular hooks with a 180∘ opening angle. | |
| Titolo: | Experimental behaviour of anchored smooth rebars in old type reinforced concrete buildings | |
| Autori: | ||
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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