Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (8): 1826-1833.doi: 10.13229/j.cnki.jdxbgxb20210330

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Wind pressures on a circular hyperbolic⁃paraboloid roof subjected to a simulated downburst

Yun-peng CHU1(),Xin-hui SUN1(),Ming LI2,Yong YAO1,Han-jie HUANG2   

  1. 1.College of Civil Engineering and Architecture，Southwest University of Science and Technology，Mianyang 621010，China
    2.China Aerodynamics Research and Development Center，Mianyang 621010，China
  • Received:2021-04-15 Online:2022-08-01 Published:2022-08-12
  • Contact: Xin-hui SUN E-mail:chuyunpeng@swust.edu.cn;2451164146@qq.com

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Abstract:

A scale model of a large span structure with a circular hyperbolic-paraboloid roof was designed and made， and an impinging jet device was used to simulate the downburst. The test was designed to obtain the roof wind pressure coefficient and explore the influence of radial distance and wind direction angle on the wind pressure of circular hyperbolic-paraboloid roof. Then， by changing the width of the building， the oval hyperbolic-paraboloid roof was designed and made under the same conditions. The similarities and differences of wind pressure on the two roofs were compared and analyzed. The conclusions are as follows： ①The maximum wind pressure values of the high points diagonal of the circular hyperbolic-paraboloid roof first increase and then decrease with the increase of the radial distance. When the wind pressure is 1.25Djet， the wind pressure reaches the maximum， and the wind pressure coefficient is -0.81. ②Wind direction angle has a great influence on the wind pressure of low point areas of circular hyperbolic-paraboloid roof. When airflow frontal hits the low point area， the wind pressure on the windward area increases rapidly， and the change gradient of the wind pressure is very large. ③Due to the difference of lengths and widths， the wind pressure of the area which is 1/3L from roof center on high point line and the low point areas of the oval hyperbolic-paraboloid roof is slightly greater than that of the circular hyperbolic-paraboloid roof. These areas need to be strengthened during structural design.

Key words: structural engineering, downbrust, hyperbolic-paraboloid roof, wind tunnel test, wind pressure characteristics

CLC Number: 

  • TU312

Fig.1

Impact jet device"

Fig.2

Building models"

Fig.3

Vertical profiles comparison of downburst"

Fig.4

Average wind pressure of roof under different wind direction angles"

Fig.5

Distribution of wind pressure of roof when r≤0.75Djet"

Fig.6

Distribution of wind pressure of roof when r≥1.00Djet"

Fig.7

Curve of wind pressure coefficient when r≥1.00Djet"

Fig.8

Distribution of wind pressure of roof when r≤0.75Djet"

Fig.9

Curve of wind pressure coefficient under different wind direction angles"

Fig.10

Curve of wind pressure coefficient of HH' line of two different roofs under different radial distances"

Fig.11

Curve of wind pressure coefficient of LL' line of two different roofs under different radial distances"

Fig.12

Curve of wind pressure coefficient of HH' line of two different roofs under different wind direction angles"

Fig.13

Curve of wind pressure coefficient of LL' line of two different roofs under different wind direction angles"

1 孔锋, 郭君, 王一飞, 等. 近56年来中国雷暴日数的时空分异特征[J]. 灾害学, 2018, 33(3) :87-95.
Guo Feng, Guo Jun, Wang Yi-fei, et al. Spatial and temporal variation characteristics of thunderstorm days in china in recent 56 years[J]. Journal of Catastrophology, 2018, 33(3): 87-95.
2 Proctor F H. Numerical simulations of an isolated microburst. Part i: dynamics and structure[J]. Journal of the Atmospheric Sciences, 1988, 45(21): 3137-3160.
3 陈勇, 崔碧琪, 彭志伟, 等. 球壳型屋盖在冲击风作用下的抗风设计参数及CFD分析[J]. 空气动力学学报, 2012, 30(4): 456-463.
Chen Yong, Cui Bi-qi, Peng Zhi-wei, et al. Wind-resistant design parameters and CFD analysis of spherical roof subjected to thunderstorm downbursts[J]. Acta Aerodynamics Sinica, 2012, 30(4): 456-463.
4 Jesson M, Sterling M, Letchford C W, et al. Aerodynamic forces on generic buildings subject to transient, downburst-type winds[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2015, 137: 58-68.
5 方智远, 李正良, 汪之松.下击暴流作用下不同深宽比的高层建筑风荷载[J]. 东南大学学报: 自然科学版, 2019, 49(3): 488-494.
Fang Zhi-yuan, Li Zheng-liang, Wang Zhi-song. Wind loads of high-rise buildings with various aspect ratios in downburst wind[J]. Journal of Southeast University(Natural Science Edition), 2019, 49(3): 488-494.
6 汪之松, 江鹏, 武彦君, 等. 地表粗糙度对高层建筑下击暴流风荷载特性影响的试验研究[J]. 振动与冲击, 2019, 38(9): 184-191, 230.
Wang Zhi-song, Jiang Peng, Wu Yan-jun, et al. Tests for effects of terrain roughness on wind load characteristics of a high-rise building under downburst[J]. Journal of Vibration and Shock, 2019, 38(9): 184-191, 230.
7 刘志文, 陈以荣, 辛亚兵, 等. 基于边界层风洞的下击暴流稳态风场特性数值模拟[J]. 湖南大学学报: 自然科学版, 2020, 47(7): 10-20.
Liu Zhi-wen, Chen Yi-rong, Xin Yan-bing, et al. Numerical simulation on steady wind field characteristics of downburst based on atmosphere boundary layer wind tunnel[J]. Journal of Hunan University(Natural Sciences), 2020, 47(7): 10-20.
8 钟永力, 晏致涛, 游溢, 等. 平面壁面射流风场作用下建筑物表面风压数值模拟[J]. 湖南大学学报: 自然科学版, 2019, 46(1): 47-54.
Zhong Yong-li, Yan Zhi-tao, You Yi, et al. Numerical simulation of mean wind pressure distribution on building surface under plane wall jet wind field[J]. Journal of Hunan University(Natural Sciences), 2019, 46(1): 47-54.
9 姚勇, 苏留锋, 李明, 等. 下击暴流作用下双面球壳型屋面风载特性[J]. 吉林大学学报: 工学版, 2022, 52(3): 615-625.
Yao Yong, Su Liu-feng, Li Ming, et al. Wind load characteristics of double-sided spherical shell roof under downburst[J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(3): 615-625.
10 孙晓颖, 武岳, 沈世钊. 鞍形屋盖平均风压分布特性的数值模拟研究[J]. 工程力学, 2006(10): 7-14.
Sun Xiao-ying, Wu Yue, Shen Shi-zhao. Numerical simulation of mean wind pressure distribution on saddle roof[J]. Engineering Mechanics, 2006(10): 7-14.
11 Chen L, Letchford C W. Multi-scale correlation analysis of two lateral profiles of full scale downburst wind speeds[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2006, 94(9): 675-696.
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