Interference Effects of Highrise Building Based on Aeroelastic Experiments under Various Reduced Velocities

• Main Authors: Sheng-Wei Tsai, 蔡昇偉
• Other Authors: Yuan-Lung Lo
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/6949q4

碩士 === 淡江大學 === 土木工程學系碩士班 === 106 === This research focuses on the fluctuating response of high-rise building interfered by another identical neighboring building under different reduced velocities and exposed to different terrains. The discussions based on aero-elastic tests and categorized into three topics: (1) investigation of fluctuating responses under two reduced velocities and three terrains, which are open (α = 0.15), suburban (α = 0.25), and urban (α = 0.32); (2) interference factors due to detailed reduced velocities at open terrain and; (3) the fluctuating response values. Results showed that the tendencies of suburban and urban terrains are similar and not apparent as open terrain for interference effects. The main dominant interference range is those positions within 1.5B to 3.0B, where B stands for the principal building’s width. In general, the fluctuating response increases with the reduced velocity and for those positions near 1.5B and 2.0B there are various interference effects found. One interesting position is that the interfering building is at x/B = -1.5 and y/B = 1.5, where the trajectory shape is elliptical only when the reduced velocity is around 6.0 m/sec. Once the position is moved or the reduced velocity is changed, this phenomenon disappears. Several other comparisons with Lo et al (2016) and Chen (2016) were carried out for enhancing the interference effect mechanisms.