Dynamic response of large primary structures to wind loads: experimental tests in wind tunnel

The evaluation of the response of an arbitrary structure to wind induced loads can be extremely difficult, due both the air flow – structure interaction, and to the structural behaviour. Moreover for very complex structures or in case of complex orography it is necessary to proceed to wind tunnel tests in order to correctly estimate the actual pressure distribution or load resultant over the structure. In the present work some results on wind tunnel tests at CRIACIV laboratory and on structural dynamic response will be presented and discussed with reference to roofing structures and bridge sections