某电信楼避雷针结构的动力响应分析  

The analysis of wind induced response for lightning rod of a telecommunication building

作　　者：陈萌[1] 管品武[2] 

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430070 [2]郑州大学土木工程学院,河南郑州450002

出　　处：《世界地震工程》2003年第4期79-82,共4页World Earthquake Engineering

摘　　要：某电信楼的避雷针结构为一变截面钢管塔,在风荷载的作用下,常会引起塔顶位移过大而影响其正常使用。本文采用有限元程序 ANSYS5.7,对避雷针钢管塔的自振频率和振型进行了计算,并用现场的实测结果验证了计算结果的准确性;在此基础之上,还计算了避雷针塔顶在脉动风荷载作用下的位移响应,从而为避雷针的风振控制提供了可靠的参考依据。The lightning rod of a telecommunication building is a large-diameter steel tube tower,at the top of the tower,the displacement is too large under the wind load in its service.The ANSYS5.7 is used to calculate the natu- ral frequencies and mode shapes of the steel tower,and the calculation results are tested by the experiment;Be- sides,the wind-induced vibration response of the tower is calculated.

关 键 词：塔 有限元法 风振响应 避雷针 动力响应 

分 类 号：TU895[建筑科学] P315[天文地球—地震学]