February 2014
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Journal of Natural Disasters
Wind tunnel tests of 1: 500 rigid model of tall building with atrium were carried out. Based on the experimental results, characteristics of wind pressure on atrium inner facades and wind loads on tall building structures were investigated in detail. The results show that the formation of flow separation on the top of tall buildings with atrium plays a critical role in the generation of wind pressures on atrium inner facades without opening. Meanwhile, wind pressure coefficient distribution on the atrium facades is relatively uniform. Moreover, the horizontal and vertical correlation of pressure coefficient is high at most locations on atrium facades. With the increasing of the opening ratio, the mean wind pressure coefficients first decrease and then stabilize, and the fluctuating wind pressure coefficients first decrease and then increase, A design guideline for wind-resistant design of atrium facades was proposed, and the results predicted by the proposed guideline are in good agreement with those from the wind tunnel tests, indicating that the proposed guidelines can be used for similar engineering design.