通信单管塔连接与附属构件对基本自振周期的影响研究

Research on Basic Natural Vibration Period of Communication Single Tube Tower Connection and the Affiliated Members

通信单管塔基本自振周期计算影响到风荷载及地震作用计算,自振周期与结构质量和刚度的分布情况相关。采用近似计算公式得到的基本自振周期不能准确反映通信单管塔的基本自振周期,通过有限元建立塔身模型计算未考虑通信单管塔连接与附属构件的影响,计算得到的基本自振周期并不能准确反映通信单管塔的基本自振周期。论文在统计中国铁塔股份有限公司通信单管塔标准塔连接与附属构件质量占塔体总质量的比例的基础上,分析连接与附属构件对通信单管塔基本自振周期的影响。计算结果表明,连接与附属构件质量占塔体总质量比例约为30%~60%,其对通信单管塔基本自振周期的影响不可忽略,计算基本自振周期应考虑连接构件与附属构件的影响。计算结果对通信单管塔的设计具有参考价值。

Communication tower basic natural period of vibration calculation affect the wind load and earthquake action calculation,natural vibration period and structural mass and stiffness distribution of the related.The basic natural period of vibration can not be obtained accurately reflect the approximate calculation formula of basic natural period of vibration tube tower with communication,through the establishment of finite element model of the tower body calculation does not consider communication single tube tower connection influence and affiliated members,basic natural vibration period and can not be calculated accurately reverse basic natural period of vibration in this paper reflect the communication tower,based on statistical Chinese tower Limited by Share Ltd.communication single tube tower standard tower connected accounted for the tower weight ratio and affiliated member,impact analysis connected with the affiliated member of communication tower basic natural vibration period.The calculation results show that the connecting auxiliary components accounted for the tower weight ratio is about 30%~60%,the basic natural period of vibration impact on communication tower can not be ignored,the calculationofthe basic natural vibration period should consider the effect of connecting member and affiliated member.The calculated results have reference value for the design of communication tower.