【摘要】 利用有限元分析软件SAP2000建立了500 KV猫头塔的空间三维模型,通过计算模型的前6阶自振周期及其振型研究输电塔结构的动力特性,重点分析了横隔面和交叉斜材的刚度对输电塔模态的影响。分析结果表明,改变交叉斜材的刚度,增加横隔面,可以有效的抑制斜撑的平面外变形,从而极大地改善输电塔的动力特性。更多还原

【Abstract】 A three-dimensional model of 500 KV cat-head transmission tower is established using the finite element software SAP2000.Based on the first six natural frequencies and modes,the dynamic characteristic of the transmission tower is analyzed.The effect of the rigidity of poles and diaphragms to the mode of the selected transmission tower is studied principally.The results show that the dynamic characteristic can be improved greatly through increasing the rigidity of poles or adding diaphragms which effectively inhibit the out-of-plane deformation.更多还原