Wind Loads to Tall Buidings Due to Wakes from Differentially Featured Constructions
Xie Zhuangning,Ge Jianbin,Shi Biqing
(Department of Civil Engineering, Shantou University)

Abstract: The wind induced response of a tall building with interference effects from nearby tall buildings with various sections was investigated via high freq uency force balance technique. The different effects between square cross-section and corner-cut buildings were compared and discussed to understand the in terference phenomenon. The results showed that th e shape of the interfering buildings had no significant effects on the static in terference. However, due to the higher vortex shedding frequency induced by the corner-cut interfering building, its dynamic interference effect was found to be more significant than that of a square section interfering building. The tested maximum dynamic envelope interference factors (EIF) of the corner-cut buildings were found up to 4.41 and 3.69 in the along-wind and across-wind direction, which were respectively 142% and 83% greater than those of the square cross-section interfering building.
Keywords: tall building, wind load, interference effects, high frequency force balance, wind tunnel tests.