This paper explores the influence of surface horizontal partition on the local wind pressure of high-rise buildings. In this paper, rigid model pressure tests were carried out on four kinds of high-rise buildings with different forms of surface appendages, and the pressure measurement results were compared with those of high-rise buildings without appendages. The average wind pressure on each facade, the fluctuating and the peak wind pressure coefficient were analysed. The results show that the surface appendages have little influence on the positive wind pressure coefficient on the windward side, but can greatly reduce the negative wind pressure coefficient on the side wind surface. especially the negative peak wind pressure coefficient; And this reduction effect increases with the decrease of the horizontal spacing of the appendages, and the maximum reduction of the extreme wind pressure in the windward higher leading corner of the side wind surface can be up to 37%. The study on the probability density distribution and non-Gaussian characteristics of the fluctuating wind pressure on the side wind surface shows that the surface appendages can reduce the skewness and kurtosis of the probability density function of the larger negative pressure, thus weakening its non-Gaussian characteristics. this effect increases with the decrease of the horizontal spacing of the appendages, indicating that the appendages can effectively restrain the separation of the incoming flow on the side wind surface.
Key words
high-rise building /
surface appendages /
wind tunnel test /
local peak pressure
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] Kwok K C S, Wilhelm P A, Wilkie B G. Effect of edge configuration on wind-induced response of tall buildings [J]. Engineering structures, 1988, 10(2): 135-140.
[2] Tanaka H, Tamura Y, Ohtake K, et al. Experimental investigation of aerodynamic forces and wind pressures acting on tall buildings with various unconventional configurations[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2012, 107-108(8): 179-191.
[3] Kim Y C, Tamura Y, Tanaka H, et al. Wind-induced responses of super-tall buildings with various atypical building shapes[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 133: 191-199.
[4] 邓挺，谢壮宁，石碧青. 强台风作用下不同退台方式对超高层建筑横风向风效应的影响[J]. 建筑结构学报，2016，37(12)：20-26.
DENG Ting, XIE Zhuang-ning, SHI Bi-qing. Effects of different setback measures on across wind effects of super-tall buildings under strong typhoon[J]. Journal of Building Structures, 2016, 37(12): 20-26.
[5] 严亚林， 唐意， 金新阳. 气动外形对高层建筑风荷载的影响研究[J]. 建筑结构学报, 2014, 35(4): 297-303.
YAN Yalin, TANG Yi, JIN Xinyang. Research on aerodynamic shape effects on wind load of high-rise buildings[J]. Journal of Building Structures, 2014, 35(4): 297-303.
[6] 王春刚，张耀春，秦云. 巨型高层开洞建筑刚性模型风洞试验研究[J]. 哈尔滨工业大学学报，2004，36(11)：1431-1434，1526.
WANG Chun-gang, ZHANG Yao-chun, QIN Yun. Wind tunnel tests study on mega tall buildings with opening rigidity models[J]. Journal of Harbin Institute of Technology, 2004, 36 (11): 1431-1434, 1526.
[7] Stathopoulos T, Zhu X. Wind pressures on building with appurtenances[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1987, 31(2):265-281.
[8] Stathopoulos T, Zhu X. Wind Pressures on Buildings with Mullions[J]. Journal of Structural Engineering, 1990, 36(1): 2272-2291.
[9] Maruta E, Kanda M, Sato J. Effects on surface roughness for wind pressure on glass and cladding of buildings[J]. Journal of Wind Engineering and Industrial Aerodynamics, 1998, 74–76(98): 651-663.
[10] Cook N J, Mayne J R. A refined working approach to the assessment of wind loads for equivalent static design[J]. Journal of Industrial Aerodynamics, 1979, 4(2):149-164.
[11] Yong C K, Kanda J. Wind pressures on tapered and set-back tall buildings[J]. Journal of Fluids and Structures, 2013, 39(5):306-321.
[12] 韩宁, 顾明. 方形高层建筑风压脉动非高斯特性分析[J]. 同济大学学报: 自然科学版, 2012, 40(7): 971-976.
HAN Ning, GU Ming. Analysis on nonGaussian features of fluctuating wind pressure on square tall buildings[J]. Journal of Tongji University (Natural Science), 2012, 40(7): 971-976.
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}
PDF(1469 KB)
