临沂气象雷达塔自振频率调整与结构分析
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（天津大学建筑设计研究院， 天津 300073）
［摘要］山东临沂气象雷达塔是集科学研究与观光为一体的高耸结构，采用框架核心筒结构。由于气象雷达塔的特殊性，对结构自振频率要求较高。通过增加外剪力墙厚度、改变外剪力墙变截面的位置、布置斜撑和增设剪力墙翼缘等措施，对提高结构自振频率进行了计算分析，并对结构进行反应谱分析和弹性时程分析。提出的关于气象雷达塔自振频率的调整方法以及设计方法可为其他类似结构设计提供参考。［关键词］气象雷达塔; 高耸结构; 自振频率; 模态分析; 弹性时程分析中图分类号：TU973.2 文献标识码：A 文章编号：1002-848X(2015)16-0087-04
Vibration frequency adjustment and structural analysis of Linyi meteorological radar towerYang Yongzhe, Meng Xiangliang, Fei Tianhui, Guo Yueyang(Architectural Design and Research Institute of Tianjin University, Tianjin 300073, China)Abstract: Linyi meteorological radar tower in Shandong province is a tall and slender structure with frame-corewall system, which contains scientific research and sightseeing functions. Because of the particularity of meteorological radar tower, the natural frequency requirement of the structure is strict. Some methods were introduced to improve the natural frequency, such as increasing exterior shear wall thickness, changing setting position of variable cross-section of exterior shear wall, adding diagonal braces and adding shear wall flanges. The response spectrum analysis and elastic time-history analysis of the structure were carried out as well. The adjustment method of natural frequency and design method of the meteorological radar tower can provide reference for other similar structural designs.Keywords: meteorological radar tower; tall and slender structure; vibration frequency; mode analysis; elastic time-history analysis
作者简介：杨永哲，高级工程师，一级注册结构工程师，Email: yyzyang01@sina.com。
