中文摘要：

为研究通信铁塔在风载荷与地震影响下的结构振动及其稳定,使用ANSYS有限元分析软件对通信铁塔的风荷载受力情况、地震反应和模态进行动力效应分析。结果表明：在正常大风工况下,铁塔基础作用力最大,铁塔的基础作用力是由风速大小控制的。随着通信铁塔高度的增加,结构的自振频率减小,结构刚度减小;通信铁塔的结构刚度较大,其基本周期均在5附近。铁塔的地震响应基础作用力均为上拔力,上拔力比在大风荷载下增加了15%。通过实测值与有限元模拟值进行比较,两者之间误差在可控范围内。

英文摘要：

In order to study the vibration of communication towers under the influence of winds and earthquakes,ANSYS was used for dynamic effect analysis about wind load,earthquake response and modality of the towers.The results indicated that the foundation force of the towers reaches maximum in strong winds and is controlled by the wind velocity.With the increase of tower height,structural vibration frequency and stiffness decrease.The structural rigidity of towers is comparatively large,and the cycle is about 5 seconds.The foundation force of the towers induced by seismic response is uplift,which is 15% higher than that induced by strong wind.The calculated results given by the finite element simulation conform to the measured value in site.