| 大跨度钢结构空中走廊的风振分析 | |
| 邓晓蔚 ; 石永久 ; 王元清 ; Deng Xiao-wei ; Shi Yong-jiu ; Wang Yuan-qing | |
| 2010-07-19 ; 2010-07-19 | |
| 关键词 | 刚接和铰接混合体系 有限元方法 随机振动分析 风振系数 响应功率谱 spidery glass curtain wall, finite element method (FEM), power spectral density (PSD) Analysis, wind vibration coefficient, response power spectrum TU393.3 TU311.3 |
| 其他题名 | Wind Vibration Analysis on the Large-span Steel Frame as Air Corridor |
| 中文摘要 | 大连空中走廊是形式新颖、技术先进的点支式玻璃幕墙刚性支承的大跨度空间钢结构。由于实际工程中的节点连接不是完全刚性的,文中对完全刚接体系以及刚接和铰接混合体系两种计算模型进行了风振的比较分析。现行的荷载规范没有提出针对这种大跨结构的风振公式,因此采用随机振动分析(PSD)求得了沿轴向分布的风振系数,结果表明直接采用规范存在不安全的因素。最后通过响应功率谱的曲线可知,结构的响应主要发生在脉动风荷载的卓越频率区以及结构的自振频率区,这说明结构的风振响应既有受迫振动又有结构共振。; Dalian Air Corridor is a large-span steel frame of spidery glass curtain with novel design and advanced technology. Due to the incomplete rigidity of joint connection in engineering, the paper makes comparative analysis on the property of wind vibration about two distinctive calculating models, rigid system and rigid and hinged hybrid system (RHHS).For the lack of the formula of wind vibration coefficient in the current load code aiming at large-span structure, this paper obtains the coefficient along the axis by adopting PSD analysis and demonstrates the unreliability of code solution if directly applied on such structure. Finally, the response of structure mainly occurs in the zone of transcendental frequency of impulsive wind and sympathetic frequency of the structure itself, which proves that the response both contains forced and sympathetic vibration, by the probe into the response power spectrum.; 北京市自然科学基金资助(8053021) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/76574]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 邓晓蔚,石永久,王元清,等. 大跨度钢结构空中走廊的风振分析[J],2010, 2010. |
| APA | 邓晓蔚,石永久,王元清,Deng Xiao-wei,Shi Yong-jiu,&Wang Yuan-qing.(2010).大跨度钢结构空中走廊的风振分析.. |
| MLA | 邓晓蔚,et al."大跨度钢结构空中走廊的风振分析".(2010). |
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