Wind pressure and wind-resistant shape optimization of typical super high-rise buildings

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (18) : 215-222.

MAO Lulu1, HAN Zhaolong1,2, ZHOU Dai1,2,3, BAO Yan1, LI Yu1, MA Jin1, MA Ning1

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Abstract

The height of modern architectures is increasing and the cross-section shape of high-rise buildings is becoming more diverse.In recent years, high-rise buildings with unconventional configurations have been constructed in China, which brings new challenges to wind engineering.Aiming at super high-rise buildings with rectangular-category and circular sections, based on the computational fluid dynamics (CFD) method and the ANSYS/FLUENT software, the wind pressure distribution and wind pressure coefficient at typical points of the super high-rise buildings with different section shapes were numerically simulated in different incoming wind directions to study the wind-resistant shape optimization of the super high-rise buildings.The results show that the maximum negative peak pressure occurs at the corner of super high-rise buildings due to the discoutinuity of the airflow separation at the corner edge.The super high-rise buildings with lacking-angle rectangular section have the most unfavorable wind pressure distribution when the incoming wind direction is directly facing the lacking-angle corner.The super high-rise buildings with circular section bear lower negative pressure, which is advantageous to wind-resistance ability.

Key words

super high-rise building / Computational Fluid Dynamics / wind pressure distribution / wind pressure coefficient.

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MAO Lulu1, HAN Zhaolong1,2, ZHOU Dai1,2,3, BAO Yan1, LI Yu1, MA Jin1, MA Ning1. Wind pressure and wind-resistant shape optimization of typical super high-rise buildings[J]. Journal of Vibration and Shock, 2019, 38(18): 215-222

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