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Journal of Applied Sciences

Year: 2014  |  Volume: 14  |  Issue: 6  |  Page No.: 518 - 524

Wind Characteristics Around a Long-span Bridge in Mountainous Terrain

Chunping Tang, Liangliang Zhang, Jingyun Hang and Haiyang Zhang

Abstract

The study aims at investigating the aeolian turbulent environment around a long-span bridge site in mountainous terrain in western China. Anemometers were installed over the height of the bridge site to measure both instantaneous wind speed and direction as well as their means. Turbulence intensity results showed that, the mean wind speed at the site presented complex variations over its height,the turbulence intensity at height of 10 m above the arch springing exceeded 40% and at 90 m it was still as high as 15%. The site’s wind speed profile did not follow either logarithmic or exponential models. The measured horizontal turbulent wind speed spectrum was closer to an Irwin spectrum, but differed from the Simiu spectrum: vertical turbulent wind speed spectra differed from the Panofsky spectrum.

Cited References Fulltext