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Performance-Based Wind Engineering of Tall Buildings Examini ng Life-Cycle Downtime and Multisource Wind Damage
| 题名： | Performance-Based Wind Engineering of Tall Buildings Examini ng Life-Cycle Downtime and Multisource Wind Damage |
| 正文语种： | 英文 |
| 作者： | Wei Cui;Luca Caracoglia, M.ASCE |
| 作者单位： | Tongji Univ;Northeastern Univ |
| 关键词： | Tall buildings; Wind-indueed vibration; Occupants, comfort; Loss of functionality; Downtime. |
| 摘要： | Structural performance against wind hazards is necessary in modem tall building design. In current wind engineering practice, most efforts focus on structural safety, such as the avoidance of large deformations. Besides structural safety, other wind-induced inconveniences, such as downtime caused by loss of operability after a major wind event, have rarely been investigated. Furthermore, discomfort to occupants is ofte n caused by less in tense but more frequent winds. Consequently, the current wind load and design approach, predominantly based on extreme wind events, is not sufficient. This paper proposes a simulation framework for life-cycle downtime analysis of tall buildings. The approach combines three typical wind-induced inconveniences: occupants1 discomfort, failure of key equipment, and nonstructural damages on the facade, which can lead to whole or partial loss of building functionality and, in turn, downtime. They are classified into two categories: frequent wind hazard inducing disturbanee and extreme wind hazards causing damage. In the latter, both parent wind speed distribution and extreme wind distribution are found from data analysis, enabling evaluation of hazard occurrence probability. This study culminates with the estimation of a tall building's life-cycle downtime through year-by-year downtime accumulation. The result will be used to determine an optimal building orientation because wind directionality effect is not negligible in a typical local climate. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.146 |
| 期： | No.01 |
| 页码： | 04019179 |
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