The paper describes the dynamic behaviour of an important road underpass: the “Martiri della Libertà” road underpass in Venice, 9 Km north from the historic centre. The road underpass is a reinforced concrete structure with deep diaphragms. In this paper the different safety level has been evaluated on the basis of National and European Codes for seismic and traffic loads for two different type of structure, one with two diaphragm, the other with three. The main parameters defining the different behaviour of the structure for the different type of stratigraphy are investigated.
For this paper is available an extended abstract after the text in Italian