基于高频天平测力试验的广播电视塔等效静力风荷载研究  

Study on Equivalent Static Wind Load of Radio and TV Transmitting Tower Based on HFFB Technology

作　　者：朱悦[1] 严亚林[2] 邱晖[1] Zhu Yue;Yan Yalin;Qiu Hui(Radio Film&TV Design and Research Institute,Beijing 100045 China;China Academy of Building Research,Beijing 100013 China)

机构地区：[1]中广电广播电影电视设计研究院,北京100045 [2]中国建筑科学研究院,北京100013

出　　处：《特种结构》2020年第5期29-33,共5页Special Structures

摘　　要：基于高频天平测力试验理论,基于电视塔力学模型分析了风致结构响应及等效静力风荷载的计算方法。本文重点讨论了平均风荷载分布形式问题和外侧网架结构与内侧筒体结构的风荷载分配问题,说明采用一阶振型假定计算的平均风荷载分布与实际分布之间存在差异,采用指数分布形式的体型系数可解决这一问题。以六安电视塔风洞试验项目为例分析了采用振型分布形式风荷载与基于体型系数指数分布的风荷载的差异。Based on the theory of high frequency balance force test the calculation methods of wind-induced structural response and equivalent static wind load were analyzed by using the mechanical model of TV Tower.This paper focused on the distribution of the average wind load and the distribution of the wind load between the outer truss structure and the inner tube structure it is shown that there is difference between the average wind load distribution calculated by using the first-order mode assumption and the actual distribution which could be solved by adopting the form coefficient of exponential distribution.Taking the wind tunnel test of Luan TV tower as an example the difference between the wind load with vibration mode distribution and considering the body type coefficient index distribution was analyzed.

关 键 词：高频天平测力试验 广播电视塔 等效静力风荷载 一阶振型 体型系数 

分 类 号：TU312.1[建筑科学—结构工程]