engleski

Wind loading parameters-measurements vs. Croatian standard

New Croatian Standard assesses wind loads to be used in the str uctural analyses of buildings up to height of 200 m, bridges up to a span of 200m and footbridges up to a span of 30 m. According to wind loading map teritory of Croatia is divided in five zones, and mean reference wind speed for the fifth zone equals 50 m/s. This is extreme value, especially when other parameters (i.e. exposure coefficient) are taken into account. Eventually this can lead to increase of wind loading three or four times compared to the standards recently used. Intention of this paper is to discuss some issues which arise during project of wind protection of one motorway section in Croatia which is exposed to extreme wind loading. Dynamic measurements of wind speed along mentioned motorway section are under way within scientif ic research of wind protection structures which are already built.

wind bora; dynamic wind speed measurements; reference wind speed; high structures

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