摘要
近几年世界各地发生过多起输电塔受震破坏的事件,给人们的生命财产和社会经济带来了巨大的损失。因此,对输电塔在地震作用下的状态进行分析显得十分重要。介绍了输电塔可以采用的各类结构体系,重点对鼓型高压输电塔结构的动力特性进行了分析和研究。采用ANSYS有限元分析软件,建立了鼓型输电塔的三维模型并进行动力学分析,包括模态分析和瞬态分析,得到了该结构的前六阶自振频率和振型,并求出了各节点的地震动力放大系数,为今后鼓型输电塔结构的设计和抗震加固提供理论依据和支持。
In the past few years,some transmission towers have been destroyed in earthquake disaster around the world,thus leading to great loss of people life and property and socio-economy.Therefore,analysis thus is required to be performed for transmission towers under seismic action.This paper introduces the various types of transmission tower structural systems.The focus point is the analysis and research on the dynamic properties of drum-type transmission tower.By using ANSYS general software,a three-dimensional model of drum-type transmission tower is taken into account here for dynamic analysis,included modal analysis and transient analysis.The first six-order vibration frequencies and modes are obtained,as well as the seismic dynamic magnification factors of each node.Both the above provide the theoretical basis and support for the design and seismic strengthening of drum-type transmission tower structures in the future.
出处
《工业建筑》
CSCD
北大核心
2010年第S1期172-176,127,共6页
Industrial Construction
基金
国家自然科学基金资助项目(50678156)
云南省自然科学基金资助项目(2006E0010Q)
关键词
输电塔
动力特性
ANSYS软件
模态分析
瞬态分析
transmission tower
dynamic properties
ANSYS software
modal analysis
transient analysis
