锥筒型塔架风振响应分析及风振系数研究  

ANALYSIS AND RESEARCH OF WIND VIBRATION RESPONSE AND WIND VIBRATION COEFFICIENT FOR CONE TOWER

作　　者：刘香[1] 尹艳杰 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《钢结构》2015年第6期51-54,共4页Steel Construction

基　　金：内蒙古自治区高等学校科学研究项目(NJZY12102)

摘　　要：为研究塔架在动态风作用下的风振响应及风振系数,采用谐波叠加法模拟得出脉动风荷载,将风荷载导入有限元软件,进行风电塔架的风振响应分析。通过风电塔架在稳态风荷载和基于GB 50009—2012《建筑结构荷载规范》计算的静风荷载作用下的静力分析,进一步对比风电塔架在动力风荷载与静力风荷载下的作用效应。结果表明:脉动风荷载对风力发电塔架的影响显著,在塔架设计中应该引起足够重视。在塔架44m以下所求荷载风振系数大于基于规范计算的风振系数,说明规范计算值偏小,应引起重视。In order to study wind vibration response and wind vibration coefficient of the tower under dynamic wind, fluctuating wind load was simulated by harmonic superposition method. Importing the wind load into finite element software, the wind vibration response analysis of the tower was conducted. Static analysis of the tower under mean wind and the static wind load was calculated according to the specification and compared with the load effect under dynamic wind load and static wind load. The results showed that fluctuating wind load had a significant effect on the tower,which should be paid great attention to the process of design. Wind induced vibration coefficient is larger than coefficient based on the specification when the height of tower is less than 44 meters, which should also be paid attention to.

关 键 词：风电塔架 谐波叠加法 风振响应 脉动风 

分 类 号：TU347[建筑科学—结构工程] TU311.3