| 方形断面高层建筑的气动阻尼研究 |
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| 引用本文： | 全涌,顾明. 方形断面高层建筑的气动阻尼研究[J]. 工程力学, 2004, 21(1): 26-30,47 |
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| 作者姓名： | 全涌 顾明 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092;同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 国家杰出青年科学基金(59725818)，教育部高等学校骨干教师资助计划联合资助 |
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| 摘 要： | 通过长细比为6的方形断面柱体单自由度气动弹性模型的风洞试验,利用随机减量方法对这类高层建筑的横风向及顺风向气动阻尼进行了估算,分析了折减风速大小、结构所处风场类型及结构阻尼对气动阻尼的影响规律,拟合得到实用计算公式,可供规范修订时参考。
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| 关 键 词： | 防灾减灾工程及防护工程 风工程 风洞试验 超高层建筑 气动阻尼 |
| 文章编号： | 1000-4750(2004)01-0026-06 |
WIND TUNNEL TEST STUDY OF AERODYNAMIC DAMPING OF SUPER HIGHRISE BUILDINGS |
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| QUAN Yong,GU Ming. WIND TUNNEL TEST STUDY OF AERODYNAMIC DAMPING OF SUPER HIGHRISE BUILDINGS[J]. Engineering Mechanics, 2004, 21(1): 26-30,47 |
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| Authors: | QUAN Yong GU Ming |
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| Abstract: | Along-wind and across-wind aerodynamic damping ratios of a square cylinder with aspect ratio of 6 are identified from the dynamic responses of its SDOF aeroelastic model with random decrease method. Parametric studies of the effects of wind velocity, wind condition and structural damping on the aerodynamic damping are performed. Formulas of the aerodynamic damping ratios are put forward through curve fitting technique. |
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| Keywords: | disaster prevention and mitigation engineering wind engineering wind tunnel test super highrise building aerodynamic damping |
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