大跨越输电塔-线体系数值分析模型的研究  

INVESTIGATION ON NUMERICAL MODEL OF ELECTRICAL TRANSMISSION TOWER-LINE SYSTEM WITH A BIG SPAN

作　　者：梁峰[1] 李黎[1] 尹鹏[1] 

机构地区：[1]华中科技大学土木工程与力学学院建筑工程系,武汉430074

出　　处：《振动与冲击》2007年第2期61-65,共5页Journal of Vibration and Shock

摘　　要：对于高柔大跨越输电塔-线体系这样的大型结构体系,强风和地震引起的体系响应,尤其是动力响应将十分显著,常常成为其结构设计的控制性因素。建立大跨越输电塔-线体系的数值分析模型,以求取其动力特性是其抗风、抗震设计的重要环节。本文在有关文献的基础上,建立了大跨越输电塔-线体系动力特性的数值分析模型,对某工程实例的动力特性进行了数值分析,与经典的理论分析结果进行了对比和讨论,得到了若干结论。同时介绍了输电线路振动的基本特点,采用多质点模型对塔线体系的耦联振动进行了研究,重点分析了多质点模型的几个模型参数对动力特性的影响。对工程实例的仿真分析表明,该模型能较准确地反映输电线路的塔线耦联振动效应,值得推广应用。For the high and flexible electrical transmission tower-line system with a big span,strong wind adn earthquake will arouse system response.The dynamic response will be usually very notable and often becomes the control factor of its structural design.Establishment of numerical analysis model of the system to evaluate its dynamic characters is a key step for its wind resistant and seismic resistant design.On the basis of some related references,a numerical analysis model of electrical transmission tower-line system with a big span is founded.In the mean time,the numerical analysis of an engineering example is carried out,whose results are compared with those of the classical theoretical analysis.Some conclusions are drawn and the basic characteristics of the vibration of transmission tower-line system are introduced.Adopting multimass model,the influences of some model parameters on dynamic characters are primarily analysed.The result in the example shows the model can comparatively accurately reflect the tower-line system's vibration effect,and is of value to popularize.

关 键 词：输电塔 导线 模型 动力特性 

分 类 号：TU311.3[建筑科学—结构工程] TM753[电气工程—电力系统及自动化]