| 桅杆结构风洞试验研究 |
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| 引用本文： | 王肇民,何艳丽,马星,邓洪洲,颜明忠.桅杆结构风洞试验研究[J].建筑结构学报,2000,21(6):55-61. |
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| 作者姓名： | 王肇民 何艳丽 马星 邓洪洲 颜明忠 |
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| 作者单位： | 同济大学!上海 200092,同济大学!上海 200092,同济大学!上海 200092,同济大学!上海 200092,同济大学!上海 200092 |
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| 基金项目： | 中国科学院资助项目，国家重点实验室基金 |
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| 摘 要： | 本文介绍了国内首次桅杆结构风洞试验，记录了格构式和单筒式桅杆模型的自振特性和风振响应测试结果。试验结果表明：①桅杆结构的非线性程度随风速的增大而增强；②桅杆结构在风振计算中应考虑多阶振型的影响，随着风速的加大，高振型的贡献增加；③在顺风荷载作用下，桅杆结构可能出现横风共振和混沌现象。
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| 关 键 词： | 非线性动力特性 风洞试验 桅杆结构 |
| 收稿时间： | 2000-12-05 |
| 修稿时间： | 2000-12-05 |
Research on Wind Tunnel Experiment of Guyed Masts |
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| WANG Zhaomin,HE Yanli,MA Xing,DENG Hongzhou,YAN Mingzhong.Research on Wind Tunnel Experiment of Guyed Masts[J].Journal of Building Structures,2000,21(6):55-61. |
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| Authors: | WANG Zhaomin HE Yanli MA Xing DENG Hongzhou YAN Mingzhong |
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| Affiliation: | WANG Zhaomin,HE Yanli,MA Xing,DENG Hongzhou,YAN Mingzhong (Dept. of Building Engineering,Tongji University,Shanghai,China) |
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| Abstract: | This paper introduces a wind tunnel experiment of guyed masts firstly conducted in China. Test results on vibration characteristics and wind induced vibration response of a lattice mast model and a cylinder mast model were recorded. Test results showed that:① the nonlinearity of guyed masts increases as wind velocity rises.② when wind induced vibration of guyed masts is calculated, multi-mode of vibrations should be considered and the contribution of higher rank modes increases as wind velocity increases.③ across-wind vibration and chaos of guyed masts may happen even under along-wind loads. |
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