结构阻尼比对单管塔风荷载计算的影响分析  

Effect of Damping Ratio on Wind Load Calculation of Monopole Towers

作　　者：屠海明[1] 张帆 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092 [2]中国铁塔股份有限公司,北京100142

出　　处：《特种结构》2017年第2期25-28,共4页Special Structures

摘　　要：为了分析结构阻尼比对单管塔风荷载计算的影响,本文进行了阻尼比不同取值时风振系数的计算对比。结果表明风振系数随着结构阻尼比的增加而显著下降。然后根据上海某单管塔实测得到的阻尼比与规范规定的阻尼比取值,分别对该单管塔风荷载进行了计算对比。实测的阻尼比大于规范规定的取值,相应计算得到的风荷载也明显降低。这给单管塔的优化设计提供了参考依据。In order to analyze the effect of damping ratio on wind load of monopole towers, the calculation and comparison of the wind-induced vibration coefficients were investigated in this paper. The results indicate that the wind-induced vibration coefficient decreases significantly with the increasing of the damping ratio. Then taking a monopole tower in Shanghai as an example, wind loads using measured damping ratio and design code specified value were calculated and compared. The measured damping ratio is greater than the value specified in the design code, thus the corresponding calculated wind load is significantly reduced. This study provides some reference for the optimization design of monopole tower.

关 键 词：阻尼比 单管塔 风荷载 

分 类 号：TU347[建筑科学—结构工程]