Research on the Effect of Building Decorative Strips on the Wind Load Characteristics of Surface of Long-Span Roofs

WANG Fang; WANG Siyi; XIE Jingkai; ZHU Xuhui; LIAO Ke

doi:10.13204/j.gyjzG23052207

Volume 53 Issue 8

Aug. 2023

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Citation:

WANG Fang, WANG Siyi, XIE Jingkai, ZHU Xuhui, LIAO Ke. Research on the Effect of Building Decorative Strips on the Wind Load Characteristics of Surface of Long-Span Roofs[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(8): 82-88,227. doi: 10.13204/j.gyjzG23052207

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Research on the Effect of Building Decorative Strips on the Wind Load Characteristics of Surface of Long-Span Roofs

doi: 10.13204/j.gyjzG23052207

1. Nanchong Vocational and Technical College, Nanchong 637171, China;
2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2023-05-22
Available Online: 2023-10-17

Abstract

Abstract

In order to study the effect of building decorative strips on the wind load characteristics of long-span roofs, the differences of average wind pressure, pulsating wind pressure, non-Gaussian characteristics of wind pressure and extreme wind pressure under two working conditions were compared based on the results of rigid wind tunnel pressure testing with and without building decorative strips on the surface of long-span roofs. The results showed that the effect of decorative building decorative strips on wind load was related to the wind angle, and the direction perpendicular to the building decorative strips would increase the average wind pressure and pulsating wind pressure coefficients, where the flow separation of the roof occurred. It would change the Gaussian characteristics of some measurement points, so that about 10% of Gaussian measurement points were converted into non-Gaussian measurement points. The direction parallel to the building decorative strips would increase the extreme negative pressure at the edge of the side roof and the middle of the roof. In general, the building decorative strips did not change the wind load mechanism of the roof mainly by negative pressure, but they increased the most unfavorable extreme negative pressure, especially at some edges by 42%, which was extremely unfavorable to the wind resistance design of the enclosure.
- long-span roof,
- building decorative strips,
- wind load,
- non-Gaussian characteristics,
- extreme wind pressure

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References(16)

References

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