多棱插接式钢管塔风振反应时程分析

【摘要】 多棱插接式钢管塔具有制作安装方便、占地面积小等独特优势,正在得到越来越多的应用。但这种结构属于风敏感结构,风振特性是设计必须考虑的关键因素。钢管塔结构为空间薄壁壳体结构,其结构分析设计尤其是风振反应分析与传统的杆系塔架结构有很大的不同。本文用有限元计算得到结构的自振频率和振型,利用振型向量和模拟得到的风荷载向量,通过将动力方程转化为状态空间方程并结合MATLAB程序进行结构的风振时程反应分析,得到了一些有益的结论。更多还原

【Abstract】 Multi-rhombus plug-in steel tube tower has the prominent virtues of ease of construction,less bulk and has been widely used as the primary pole styles for a long time.But the sensitivity to wind and wind-induced character of this kind of structures are the key factors to be considered in design.Steel tube tower is a kind of spatial thin-walled shell structures,its wind-induced vibration responses are quite different from traditional tower.FEM is used to calculate the mode shape and frequency in this paper,on the base of mode shape vector and wind load vector,the dynamic equation is translated into state space equation to study the wind-induced response,some conclusions are also given in this paper.更多还原