In this paper is described the first phase of a research project that is currently on going at the University of Perugia, Department of Civil and Environmental Engineering, to analyze and improve the fatigue behaviour of reinforced concrete panels produced by Edil Beton S.p.A. for the realization of access floors. It foresees: • execution of experimental tests with current RC panels subjected to rolling load by means of a specific test device built for the purpose; • numerical analyses to evaluate the stress levels and the stress cycles of concrete and steel during the tests execution for the current RC panels; • proposal of modifications to the current panels production consisting in the use of additional steel rebars and in the reformulation of the concrete mix design to ensure higher toughness and fatigue resistance using additives and fibres, taking into account both aesthetical and structural aspects; • numerical evaluation of the fatigue resistance improvement obtained with the proposed modifications; • verification trough experimental tests of the fatigue resistance improvement estimated by numerical analyses (to be completed in a second phase). The results of such investigations are presented and discussed.
Crack control and fatigue behaviour improvement of precast reinforced concrete access floors
BRECCOLOTTI, Marco;MATERAZZI, Annibale Luigi;
2006
Abstract
In this paper is described the first phase of a research project that is currently on going at the University of Perugia, Department of Civil and Environmental Engineering, to analyze and improve the fatigue behaviour of reinforced concrete panels produced by Edil Beton S.p.A. for the realization of access floors. It foresees: • execution of experimental tests with current RC panels subjected to rolling load by means of a specific test device built for the purpose; • numerical analyses to evaluate the stress levels and the stress cycles of concrete and steel during the tests execution for the current RC panels; • proposal of modifications to the current panels production consisting in the use of additional steel rebars and in the reformulation of the concrete mix design to ensure higher toughness and fatigue resistance using additives and fibres, taking into account both aesthetical and structural aspects; • numerical evaluation of the fatigue resistance improvement obtained with the proposed modifications; • verification trough experimental tests of the fatigue resistance improvement estimated by numerical analyses (to be completed in a second phase). The results of such investigations are presented and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
