Wind Tunnel Eexperimental Research on Wind Pressure Distribution Characteristics of Complex Cylindrical Long-Span Roof Structures

WEI Sitong; WU Xiaohong; ZHAO Chao; SUN Qing

doi:10.3724/j.gyjzG23022010

Volume 55 Issue 6

Jun. 2025

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WEI Sitong, WU Xiaohong, ZHAO Chao, SUN Qing. Wind Tunnel Eexperimental Research on Wind Pressure Distribution Characteristics of Complex Cylindrical Long-Span Roof Structures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(6): 182-192. doi: 10.3724/j.gyjzG23022010

Citation:

WEI Sitong, WU Xiaohong, ZHAO Chao, SUN Qing. Wind Tunnel Eexperimental Research on Wind Pressure Distribution Characteristics of Complex Cylindrical Long-Span Roof Structures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(6): 182-192. doi: 10.3724/j.gyjzG23022010

Citation:

WEI Sitong, WU Xiaohong, ZHAO Chao, SUN Qing. Wind Tunnel Eexperimental Research on Wind Pressure Distribution Characteristics of Complex Cylindrical Long-Span Roof Structures[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(6): 182-192. doi: 10.3724/j.gyjzG23022010

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Wind Tunnel Eexperimental Research on Wind Pressure Distribution Characteristics of Complex Cylindrical Long-Span Roof Structures

doi: 10.3724/j.gyjzG23022010

Department of Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received Date: 2023-02-20

Abstract

Abstract

A double-sided synchronized pressure test was conducted on a rigid model of a complex cylindrical long-span roof in a terrain B boundary layer wind tunnel. The time histories of wind pressure in 24 wind directions were obtained from the wind pressure measurements. Based on the test results， the influence of wind direction and opening state on the mean wind pressure distribution characteristics was analyzed， the power spectral densities， correlation coefficients， and coherence functions of the wind loads were studied in detail. The results showed that the roof surface was predominantly governed by negative pressure， with high negative pressure zones prone to forming within approximately 20 meters at the structural ends and near the roof apex； the geometric complexity of the structure led to distinct local wind pressure distributions at structural junctions compared to individual cylindrical structures at all wind angles except 0° and 180°； the open configuration significantly reduced wind suction on the roof surface； the spectral characteristics of fluctuating wind pressure were associated with turbulence scale， where low-frequency components dominated the windward side while high-frequency components prevailed on the leeward side. Both along-wind and cross-wind coherence decreased with increasing frequency and spatial distance between measurement points， and the latter decayed more rapidly.
- long-span roof,
- wind tunnel test,
- wind pressure distribution characteristics,
- power spectrum,
- coherence

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References(25)

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