计及空气阻尼影响的接触线波动速度修正研究  

Modified Formula of Wave Motion Velocity of Catenary Inclusive of Air Damping

作　　者：刘志刚[1] 韩志伟[1] 侯运昌[1] 刘煜铖[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道学报》2013年第1期41-45,共5页Journal of the China Railway Society

基　　金：国家自然科学基金(U1134205;51007074);教育部新世纪优秀人才支持计划(NCET-08-0825);铁道部科技研究开发计划(2011J016-B)

摘　　要：接触线的波动速度是高速铁路弓网动态特性的关键参数,直接决定着动车组的最高运行速度。在计算接触线的波动速度时,一般未考虑空气阻尼对接触线波动速度的影响。本文通过对张力梁的波动方程中波动速度详细求解公式的推导,建立空气阻尼下接触线的受力模型,详细推导计及空气阻尼的接触线波动速度公式,找出影响接触线波动速度的关键参数,分析接触线波动速度与张力-空气阻尼系数的关系曲线,为高速铁路接触线的设计与施工提供借鉴。The wave motion velocity of catenary is the key parameter of dynamic pantograph-catenary character- istics of high-speed railways, which directly determines the highest running velocity of EMU. When the wave motion velocity is calculated, the influence of air damping is not considered in general. In the paper, through deducting the wave motion velocity by the wave equation of the tension beam, the stressed model of catenary inclusive of air damping was built, and the wave motion velocity formula in consideration of air damping was deduced, by which the key parameters affecting the wave motion velocity of catenary were found. The relation- ship curve between the wave motion velocity of catenary and the tension-force-air damping coefficient was drawn and analyzed. The conclusions can provide helpful references to design and construction of catenary of high-speed railways.

关 键 词：高速铁路 接触线 波动速度 空气阻尼 

分 类 号：U284.481[交通运输工程—交通信息工程及控制]