格构式避雷针的动力特性分析及优化设计

Dynamic feature analysis and optimization design of lattice lightning rod

钢筋格构式避雷针具有取材容易、加工便捷、方便运输安装等优点,选择常见的30 m高避雷针,对其进行模态分析,并结合模态分析的结果对避雷针刚度进行调整,得到以下结论:钢筋格构式避雷针所具有的高度对称性的几何形体,使得结构动力特性十分优异;只需添加少量的钢筋材料加强横隔,即可对格构式避雷针的整体刚度进行有效调整。

Lattice lightning rod consisted of rebar has advantages of easy material acquisition,convenient processing,convenient transportation and installation.In this paper,a 30 m high lightning rod is selected for modal analysis,and stiffness of the lightning rod is adjusted in combination with the results of modal analysis.The following conclusions can be obtained as followed:the dynamic characteristics of the structure can be made very excellent by the highly symmetrical geometry of the reinforced lattice lightning rod.The overall stiffness of lattice lightning rod can be effectively adjusted by adding a small amount of reinforcement material.