摘要
大跨越输电塔-线体系的动力特征评估是其抗风、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-线体系耦联振动动力特性分析的多自由度体系计算方法,并对大跨越输电塔-线体系工程实例的动力特性进行了分析,讨论了塔-线耦联振动对塔,线各自动力特性的影响,得到了若干结论。
The evaluation of dynamic characters of electrical transmission tower-line system with a big span is a key step for its wind resistant and seismic resistant design.On the basis of some related references,this paper has founded a calculation method of multi-degree-of-freedom to analyze the dynamic characters of coupled vibrations of electrical transmission tower-line system.In the mean time,an engineering example of an electrical transmission tower-line system with a big span is analyzed.Finally,the effects coupled vibrations of electrical transmission tower-line system on the dynamic characterictics of tower and line respectively are evaluated,and some conclusions are drawn.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第6期63-69,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助(50278073)
关键词
输电塔
导线
耦联体系
动力特性
tower
line
coupled system
dynamic characteristic
