Strut-and-Tie Model (STM), conceived by the French builder François Hennebique as a simple representation of a reinforced concrete element subjected to shear and bending, has been later developed by Ritter and Mörsch. Schlaich et al. (1987) proposed a global approach to the structural design by means of STM. Even though nowadays STM is widely used, several difficulties can be still encountered when dealing with the choice of the model that can best fit the actual configuration. In this paper, the case of bridge decks subjected to horizontal actions is presented. Different methods to reach STM are shown: from FEM to Load Path Method to Bi-directional Evolutionary Structural Optimization method. The aim is to use the examined case to evaluate the efficacy of these methods to gain experience in designing r.c. structures with STM. Moreover, in the paper the influence on the model of the geometry of the bridge slab as well as the distribution of longitudinal and transversal deck beams have been investigated.
The design of r.c. bridge deck subjected to horizontal actions by strut-and-tie model / Mezzina, M.; Palmisano, F.; Raffaele, Domenico. - (2010), pp. 2390-2397. (Intervento presentato al convegno 5th International Conference on Bridge Maintenance, Safety and Management IABMAS 2010 tenutosi a Philadelphia, Pensylvania, USA nel July 11-15, 2010).
The design of r.c. bridge deck subjected to horizontal actions by strut-and-tie model
RAFFAELE, Domenico
2010-01-01
Abstract
Strut-and-Tie Model (STM), conceived by the French builder François Hennebique as a simple representation of a reinforced concrete element subjected to shear and bending, has been later developed by Ritter and Mörsch. Schlaich et al. (1987) proposed a global approach to the structural design by means of STM. Even though nowadays STM is widely used, several difficulties can be still encountered when dealing with the choice of the model that can best fit the actual configuration. In this paper, the case of bridge decks subjected to horizontal actions is presented. Different methods to reach STM are shown: from FEM to Load Path Method to Bi-directional Evolutionary Structural Optimization method. The aim is to use the examined case to evaluate the efficacy of these methods to gain experience in designing r.c. structures with STM. Moreover, in the paper the influence on the model of the geometry of the bridge slab as well as the distribution of longitudinal and transversal deck beams have been investigated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
