FIELD-MEASUREMENTS OF THE WIND-INDUCED RESPONSE OF A CABLE-STAYED BRIDGE - VALIDATION OF PREVISIONAL STUDIES

Field measurements of the wind turbulence and the wind-induced respons e of the Iroise cable-stayed bridge, near Brest in the far west of Fra nce, have been carried out. This bridge is located in the wake of an o lder three-arched bridge which had to be streamlined following results of computational and wind-tunnel studies in order to suppress wake in teraction effects on the cable stayed bridge. The objective of these f ield measurements was to check the validity of the wake turbulence cha racteristics used in the design (according to the wind-tunnel studies) , and of the previsions of the dynamic response obtained by a combined approach: theoretical computations and experiments on a taut-strip mo del. The measurements have allowed to validate the previsional studies . (C) 1998 Elsevier Science Ltd. All rights reserved.