Estado del arte sobre el método del túnel de viento en Colombia para medir su fiabilidad

Abstract

The measurement of wind loads on structures is a fundamental part for the design resistant to adverse effects, the NSR-10 in title B (Loads) presents 3 models for this analysis through the simplified procedure, analytical procedure and wind tunnel; The wind tunnel procedure is used when the results of the previous methods are not sufficient to determine the stability of the structure, to supply this problem the structure is modeled to scale to subject it to stability tests and estimation of forces simulating wind conditions as close to reality as possible. Many of the investigations for load problems have been done through the wind tunnel procedure, at the time and one of the most famous is the fall of the Tacoma Narros Bridge (USA, 1940) part by which research of this type of forces were encouraged, in that investigation through a conventional wind tunnel and over the years in different projects its fall is adjusted by the Resonance effect (determined by the Natural frequency of the structure), in recent research from the University of the Basque Country. In Spain, it was concluded that its fall was actually due to an effect called fluttering due to combined suction and pressure forces. This leads us to question the veracity of the results of other investigations and leads us to our main problem.