Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Residual capacity of a reinforced concrete grillage deck exposed to corrosion
Grillage decks made of reinforced concrete (RC) with more than 40–60 years of service life may exhibit localised areas of severe damage or even entire elements exceeding the serviceability limits. In these cases, it is essential to quickly and efficiently assess the structure’s safety margins, and, in the worst cases, to also verify whether the damaged deck’s residual bearing capacity is sufficient for it to be used as a platform for the repair works. This article proposes an assessment based on a non-linear RC finite element specialised in dealing with systems working in bending and torsion. The damage, measured at a particular time after construction, is modelled by a reduction of the reinforcement section, supposed to be induced by chlorides diffusion and investigated through a Cellular Automata algorithm. Such an approach is applied in studying a bridge deck, having an edge beam damaged by leakage of salted water from the road platform. The results give a thorough description of the structural behaviour and the deformed shapes help in understanding the redistribution process of the internal forces. These results may provide a reliable reference to plan proper maintenance actions as well as to establish a hierarchy of repairing and strengthening interventions.
Residual capacity of a reinforced concrete grillage deck exposed to corrosion
Grillage decks made of reinforced concrete (RC) with more than 40–60 years of service life may exhibit localised areas of severe damage or even entire elements exceeding the serviceability limits. In these cases, it is essential to quickly and efficiently assess the structure’s safety margins, and, in the worst cases, to also verify whether the damaged deck’s residual bearing capacity is sufficient for it to be used as a platform for the repair works. This article proposes an assessment based on a non-linear RC finite element specialised in dealing with systems working in bending and torsion. The damage, measured at a particular time after construction, is modelled by a reduction of the reinforcement section, supposed to be induced by chlorides diffusion and investigated through a Cellular Automata algorithm. Such an approach is applied in studying a bridge deck, having an edge beam damaged by leakage of salted water from the road platform. The results give a thorough description of the structural behaviour and the deformed shapes help in understanding the redistribution process of the internal forces. These results may provide a reliable reference to plan proper maintenance actions as well as to establish a hierarchy of repairing and strengthening interventions.
Residual capacity of a reinforced concrete grillage deck exposed to corrosion
Conti, Elisa (Autor:in) / Malerba, Pier Giorgio (Autor:in) / Quagliaroli, Manuel (Autor:in) / Scaperrotta, Diego (Autor:in)
Structure and Infrastructure Engineering ; 16 ; 202-218
02.01.2020
17 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Grillage analogy in bridge deck analysis
| TIBKAT | 1998
The Semi-Grillage Method in Bridge Deck Analysis
| British Library Conference Proceedings | 1990
Grillage vs. Concrete Foundations
Engineering Index Backfile | 1903
Bridge deck analysis through the use of grillage models
| British Library Conference Proceedings | 2003
The vertical capacity of grillage foundations
| Online Contents | 2012