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| 考虑土体结构相互作用的大型双曲冷却塔风致响应分析 | |
| 引用本文： | 沈国辉,王宁博,鲍侃袁,孙炳楠,楼文娟.考虑土体结构相互作用的大型双曲冷却塔风致响应分析[J].空气动力学学报,2011,29(6). |
| 作者姓名： | 沈国辉 王宁博 鲍侃袁 孙炳楠 楼文娟 |
| 作者单位： | 1. 浙江大学土木工程学系,杭州,310058 2. 中国建筑西北设计研究院,西安,710003 3. 浙江大学建筑设计研究院,杭州,310027 |
| 基金项目： | 国家自然科学基金(50608063) |
| 摘 要： | 采用有限元方法模拟大型双曲冷却塔的土体与结构相互作用(SSI),分析不同土体条件下自振特性的特征,基于风洞试验结果进行风致响应的计算,并分析不同土体条件下响应的差别.研究表明:土体刚度越小,土体结构体系的自振频率也越小；土体对冷却塔上半部分的子午向薄膜力影响较小,对下半部分影响较大；考虑SSI效应后,平均风作用下冷却塔径向位移增大,子午向薄膜力减小,脉动风作用下径向位移均方根增大,子午向薄膜力均方根几乎不变. |
| 关 键 词： | 冷却塔 风荷载 有限元 结构土体相互作用 自振特性 |
Wind-induced response of large hyperbolic cooling tower considering soil-structure interaction |
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| SHEN Guo-hui , WANG Ning-bo , BAO Kan-yuan , SUN Bing-nan , LOU Wen-juan.Wind-induced response of large hyperbolic cooling tower considering soil-structure interaction[J].Acta Aerodynamica Sinica,2011,29(6). | |
| Authors: | SHEN Guo-hui WANG Ning-bo BAO Kan-yuan SUN Bing-nan LOU Wen-juan |
| Institution: | SHEN Guo-hui1,WANG Ning-bo2,BAO Kan-yuan3,SUN Bing-nan1,LOU Wen-juan1 |
| Abstract: | The finite element method is employed to study the Soil-Structure Interaction(SSI) on the large hyperbolic cooling tower.The vibration characteristics of the cooling tower under different soil conditions are investigated and the wind-induced responses based on the wind tunnel test results are calculated.Then the difference of responses considering different soil conditions is analyzed.Results from this study show that the vibration frequencies of the soil-structure system decrease when the stiffness of the ... |
| Keywords: | cooling tower wind loads finite element method soil-structure interaction vibration characteristics |
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