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Wind Pressure Characteristics at Windward Side of Long-Span Cantilevered Roof by Wind Tunnel Test

Wind Pressure Characteristics at Windward Side of Long-Span Cantilevered Roof by Wind Tunnel Test
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摘要 A rigid mode of long-span cantilevered roof was tested in wind tunnel. By analyzing the relation between wind angle and wind pressure coefficient and the relation between wind angle and wind shape factor, we found that 90° is the most disadvantageous wind angle. Furthermore, the fluctuation of wind pressure at the windward edge was reflected by power spectrum density (PSD) and coherence function. The correlation coefficients of measuring points on outer and inner surfaces verifys that the largest lift force was produced at 90°. A rigid mode of long-span cantilevered roof was tested in wind tunnel. By analyzing the relation between wind angle and wind pressure coefficient and the relation between wind angle and wind shape factor, we found that 90° is the most disadvantageous wind angle. Furthermore, the fluctuation of wind pressure at the windward edge was reflected by power spectrum density (PSD) and coherence function. The correlation coefficients of measuring points on outer and inner surfaces verifys that the largest lift force was produced at 90°.
出处 《Journal of Southwest Jiaotong University(English Edition)》 2009年第1期36-41,共6页 西南交通大学学报(英文版)
关键词 Long-span roof Wind tunncl test Coherence function Correlation coefficient Long-span roof Wind tunncl test Coherence function Correlation coefficient
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