本文利用大氣邊界層流場中不同配置方式的矩柱群其中間柱體的風力靜、教
變化特性，研究不同配置方式對中間柱體氣動力特性的影響。實驗所採用的配置
﹒ 方式已括縱列矩柱群、I 型配置矩柱群、M 型配置矩柱群等三種，同時採用兩種
‘ 不同高寬比進行風洞實驗，以利相互比較。實驗結果顯示:縱列主巨柱群的自己置條
件下，高寬比2 的建築群如其間距比介於1-2 之間，則易有負的曳力作用出現。
兩瓦比4 的建築群則在問llé 比介於1-2 . 5 之間時，易有負的曳力作用出現。過邊
建築物尾流的干擾使得建物整體擾動性風力下降。在有週邊柱體尾流干擾情形
下，除少數特例外，大多數矩柱體其不同風向間的整體擾動性風力及彼此間的相
關性均較單柱時為低。在尖峰因子方面，發現週邊柱體尾:束對於中間柱的尖峰因
子並未發生明顯改變，風力作用仍呈現近似高斯分布。 A series of aerodynamic tests of rectangular section cylinderss in different
layout were conducted to investigate the aerodynamic characteristics of middle
cylinder. The type of layout used in this study includes tandem, I-type and M-typc
of cylinders layout. The aspect ration of models is 0,6 and the height-to-width(H/D)
ratio · were 2 and 4. The results show there are negative drag force for models in
HID is 2 with spacing ration between I to 2, and also for models in HID is 4 with
spacing ration between 1 to 2.5. And the influence comes from the near cylinders will reduce the total wind force and correlation of buildings. The peak factors do not change too much for different layout of cylinders.
關聯:
中華民國力學學會90年度年會暨第25屆全國力學會議=Proceedings of 25 National Conference of Theoretical and Applied Mechanics，12頁
