题名 |
開洞式高層建築表面風壓力之研究 |
并列篇名 |
A Research on the Surface Pressure of a Building with an Opeing |
DOI |
10.6377/JA.200007.0001 |
作者 |
任森珂(Sen-Ke Renn);許茂雄(Maw-Hsung Sheu);周榮華(Jung-Hua Chou) |
关键词 |
邊界層 ; 雷諾數 ; 止流點 ; 風阻係數 ; 分離點 ; Boundary layer ; Reynolds number ; Stagnation point ; Drag Coefficient ; Separation point |
期刊名称 |
建築學報 |
卷期/出版年月 |
33期(2000 / 07 / 20) |
页次 |
1 - 13 |
内容语文 |
繁體中文 |
中文摘要 |
本文以兩個大小均為7.2cm×7.2cm×21.6cm之縮小比例的長方體模型探討開洞對高層建築表面風壓力的影響,模型中之一在中間有比率為面積1/9之開洞,將模型置於邊界層風洞設備中,以壓力孔量測模型表面風壓,用以模擬實際建築物在地面上受風壓作用的情形。吹襲風之角度有0°、30°、45°、60°、及90°,而雷諾數則約為28800。試驗結果顯示開洞可使建築物表面風壓降低,因而降低建築物承受之負載,以風阻系述表示時,1/9之開洞比率可以減少20%之風阻,大於以目前建築規範計算所得之值。另外開洞建築物對附近環境造成的影響範圍也隨之縮小。 |
英文摘要 |
This study uses scaled-down models to investigate the influence of an opening on the surface pressure of a tall building. The study was conducted in a turbulent boundary layer wind tunnel with surface pressure taps installed on the surface of the test models. Two rectangular models with the same size as 7.2cm × 7.2cm × 21.6cm were tested, one with an opening while the other without. The Reynolds numbers were about 28800. The wind directions were 0,30,45,60 and 90 degrees, respectively.Experimental results indicate that an opening will reduce the surface pressure on the building. Thus, drag force on the building with an opening will be reduced. An open area ratio of 1/9 will reduce the drag force by 20%, a value greater than that calculated from current building codes. Furthermore, the influence of a building to its environments will be reduced also when an opening is present on the building. |
主题分类 |
工程學 >
土木與建築工程 |
参考文献 |
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