A study on the characteristics of roof wind field by wind tunnel test

被引：12

作者：

Zou, Qiong ^{[1
]}

Li, Zhengnong ^{[2
]}

Zou, Feng ^{[3
]}

Zeng, Xuan ^{[1
]}

Wang, Chao ^{[1
]}

Pan, Yueyue ^{[4
]}

机构：

[1] Xiangtan Univ, Coll Civil Engn & Mech, Xiangtan 411105, Hunan, Peoples R China

[2] Hunan Univ, Minist Educ, Key Lab Bldg Safety & Energy Efficiency, Changsha 410082, Hunan, Peoples R China

[3] China Construct Second Engn Bur Co Ltd, Beijing 100160, Peoples R China

[4] Weifang Univ, Coll Architectural Engn, Weifang 261061, Shandong, Peoples R China

来源：

JOURNAL OF BUILDING ENGINEERING | 2021年 / 43卷

基金：

中国国家自然科学基金;

关键词：

Wind field; Flat roof; Wind tunnel test; Parapet; Speed-up ratio; LOW BUILDINGS; PARABOLIC TROUGH; PARAPETS; LOADS;

D O I：

10.1016/j.jobe.2021.103155

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

More and more solar-powered devices are installed on roofs, and wind load is its structural design control load. Therefore, roof wind field condition is considered to be the most important prerequisite in studies of wind load on structures. In this study, wind tunnel testing was carried out to observe the roof wind field characteristics of a multistorey building. The change rule and characteristics of the multistorey building roof wind field, under different wind directions were studied, and the roof wind field and ground wind field were then compared. The analysis showed that the closer to the roof, the greater the roof wind field effect on the building. When the distance from the roof Z >= 9 m, it appears that changes in roof wind speed and turbulence intensity are not affected by the building. When the height from roof Z <= 5 m, a turbulence intensity enlargement ratio Delta S-l of 0.1-0.3 is recommended. For practical application, a speed-up ratio of the mean wind speed Delta S-v of 0.9 is recommended.

引用

页数：10

共 25 条

[1] Effect of roof shape, wind direction, building height and urban configuration on the energy yield and positioning of roof mounted wind turbines [J].

Abohela, Islam ;

Hamza, Neveen ;

Dudek, Steven .

RENEWABLE ENERGY, 2013, 50 :1106-1118

[2]

[Anonymous], 2002, AS/NZS 1170.0

[3]

[Anonymous], 2012, 500092012 GB

[4]

[Anonymous], 2004, EN 1991-1-4

[5]

[Anonymous], 2004, AIJ REC LOADS BUILD

[6]

Asce, 2003, MIN DELOADBUILD, VSecond Edition

[7] Microeolic turbines in the built environment: Influence of the installation site on the potential energy yield [J].

Balduzzi, Francesco ;

Bianchini, Alessandro ;

Ferrari, Lorenzo .

RENEWABLE ENERGY, 2012, 45 :163-174

[8] Wind loading on tilted roof-top solar arrays: The parapet effect [J].

Browne, Matthew T. L. ;

Gibbons, Michael P. M. ;

Gamble, Scott ;

Galsworthy, Jon .

JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2013, 123 :202-213

[9] Comparison of medium-size concentrating solar power plants based on parabolic trough and linear Fresnel collectors [J].

Cau, Giorgio ;

Cocco, Daniele .

ATI 2013 - 68TH CONFERENCE OF THE ITALIAN THERMAL MACHINES ENGINEERING ASSOCIATION, 2014, 45 :101-110

[10] Field measurements of boundary layer wind characteristics and wind loads of a parabolic trough solar collector [J].

Gong, Bo ;

Wang, Zhifeng ;

Li, Zhengnong ;

Zhang, Jianhan ;

Fu, Xiangdong .

SOLAR ENERGY, 2012, 86 (06) :1880-1898

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